/*!

* Less - Leaner CSS v2.6.0
* http://lesscss.org
*
* Copyright (c) 2009-2016, Alexis Sellier <self@cloudhead.net>
* Licensed under the  License.
*
*/

/** * @license 
*/

(function(f){if(typeof exports===“object”&&typeof module!==“undefined”){module.exports=f()}else if(typeof define===“function”&&define.amd){define([],f)}else{var g;if(typeof window!==“undefined”){g=window}else if(typeof global!==“undefined”){g=global}else if(typeof self!==“undefined”){g=self}else{g=this}g.less = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n){if(!t){var a=typeof require==“function”&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(“Cannot find module '”o“'”);throw f.code=“MODULE_NOT_FOUND”,f}var l=n={exports:{}};t[0].call(l.exports,function(e){var n=t[1];return s(n?n:e)},l,l.exports,e,t,n,r)}return n.exports}var i=typeof require==“function”&&require;for(var o=0;o);return s})({1:[function(require,module,exports){ var addDataAttr = require(“./utils”).addDataAttr,

browser = require("./browser");

module.exports = function(window, options) {

// use options from the current script tag data attribues
addDataAttr(options, browser.currentScript(window));

if (options.isFileProtocol === undefined) {
    options.isFileProtocol = /^(file|(chrome|safari)(-extension)?|resource|qrc|app):/.test(window.location.protocol);
}

// Load styles asynchronously (default: false)
//
// This is set to `false` by default, so that the body
// doesn't start loading before the stylesheets are parsed.
// Setting this to `true` can result in flickering.
//
options.async = options.async || false;
options.fileAsync = options.fileAsync || false;

// Interval between watch polls
options.poll = options.poll || (options.isFileProtocol ? 1000 : 1500);

options.env = options.env || (window.location.hostname == '127.0.0.1' ||
    window.location.hostname == '0.0.0.0'   ||
    window.location.hostname == 'localhost' ||
    (window.location.port &&
        window.location.port.length > 0)      ||
    options.isFileProtocol                   ? 'development'
    : 'production');

var dumpLineNumbers = /!dumpLineNumbers:(comments|mediaquery|all)/.exec(window.location.hash);
if (dumpLineNumbers) {
    options.dumpLineNumbers = dumpLineNumbers[1];
}

if (options.useFileCache === undefined) {
    options.useFileCache = true;
}

if (options.onReady === undefined) {
    options.onReady = true;
}

};

},{“./browser”:3,“./utils”:10}],2:[function(require,module,exports){ /**

* Kicks off less and compiles any stylesheets
* used in the browser distributed version of less
* to kick-start less using the browser api
*/

/*global window, document */

// shim Promise if required require('promise/polyfill.js');

var options = window.less || {}; require(“./add-default-options”)(window, options);

var less = module.exports = require(“./index”)(window, options);

window.less = less;

var css, head, style;

// Always restore page visibility function resolveOrReject(data) {

if (data.filename) {
    console.warn(data);
}
if (!options.async) {
    head.removeChild(style);
}

}

if (options.onReady) {

if (/!watch/.test(window.location.hash)) {
    less.watch();
}
// Simulate synchronous stylesheet loading by blocking page rendering
if (!options.async) {
    css = 'body { display: none !important }';
    head = document.head || document.getElementsByTagName('head')[0];
    style = document.createElement('style');

    style.type = 'text/css';
    if (style.styleSheet) {
        style.styleSheet.cssText = css;
    } else {
        style.appendChild(document.createTextNode(css));
    }

    head.appendChild(style);
}
less.registerStylesheetsImmediately();
less.pageLoadFinished = less.refresh(less.env === 'development').then(resolveOrReject, resolveOrReject);

}

},{“./add-default-options”:1,“./index”:8,“promise/polyfill.js”:97}],3:[function(require,module,exports){ var utils = require(“./utils”); module.exports = {

createCSS: function (document, styles, sheet) {
    // Strip the query-string
    var href = sheet.href || '';

    // If there is no title set, use the filename, minus the extension
    var id = 'less:' + (sheet.title || utils.extractId(href));

    // If this has already been inserted into the DOM, we may need to replace it
    var oldStyleNode = document.getElementById(id);
    var keepOldStyleNode = false;

    // Create a new stylesheet node for insertion or (if necessary) replacement
    var styleNode = document.createElement('style');
    styleNode.setAttribute('type', 'text/css');
    if (sheet.media) {
        styleNode.setAttribute('media', sheet.media);
    }
    styleNode.id = id;

    if (!styleNode.styleSheet) {
        styleNode.appendChild(document.createTextNode(styles));

        // If new contents match contents of oldStyleNode, don't replace oldStyleNode
        keepOldStyleNode = (oldStyleNode !== null && oldStyleNode.childNodes.length > 0 && styleNode.childNodes.length > 0 &&
            oldStyleNode.firstChild.nodeValue === styleNode.firstChild.nodeValue);
    }

    var head = document.getElementsByTagName('head')[0];

    // If there is no oldStyleNode, just append; otherwise, only append if we need
    // to replace oldStyleNode with an updated stylesheet
    if (oldStyleNode === null || keepOldStyleNode === false) {
        var nextEl = sheet && sheet.nextSibling || null;
        if (nextEl) {
            nextEl.parentNode.insertBefore(styleNode, nextEl);
        } else {
            head.appendChild(styleNode);
        }
    }
    if (oldStyleNode && keepOldStyleNode === false) {
        oldStyleNode.parentNode.removeChild(oldStyleNode);
    }

    // For IE.
    // This needs to happen *after* the style element is added to the DOM, otherwise IE 7 and 8 may crash.
    // See http://social.msdn.microsoft.com/Forums/en-US/7e081b65-878a-4c22-8e68-c10d39c2ed32/internet-explorer-crashes-appending-style-element-to-head
    if (styleNode.styleSheet) {
        try {
            styleNode.styleSheet.cssText = styles;
        } catch (e) {
            throw new Error("Couldn't reassign styleSheet.cssText.");
        }
    }
},
currentScript: function(window) {
    var document = window.document;
    return document.currentScript || (function() {
        var scripts = document.getElementsByTagName("script");
        return scripts[scripts.length - 1];
    })();
}

};

},{“./utils”:10}],4:[function(require,module,exports){ // Cache system is a bit outdated and could do with work

module.exports = function(window, options, logger) {

var cache = null;
if (options.env !== 'development') {
    try {
        cache = (typeof window.localStorage === 'undefined') ? null : window.localStorage;
    } catch (_) {}
}
return {
    setCSS: function(path, lastModified, modifyVars, styles) {
        if (cache) {
            logger.info('saving ' + path + ' to cache.');
            try {
                cache.setItem(path, styles);
                cache.setItem(path + ':timestamp', lastModified);
                if (modifyVars) {
                    cache.setItem(path + ':vars', JSON.stringify(modifyVars));
                }
            } catch(e) {
                //TODO - could do with adding more robust error handling
                logger.error('failed to save "' + path + '" to local storage for caching.');
            }
        }
    },
    getCSS: function(path, webInfo, modifyVars) {
        var css       = cache && cache.getItem(path),
            timestamp = cache && cache.getItem(path + ':timestamp'),
            vars      = cache && cache.getItem(path + ':vars');

        modifyVars = modifyVars || {};

        if (timestamp && webInfo.lastModified &&
            (new Date(webInfo.lastModified).valueOf() ===
                new Date(timestamp).valueOf()) &&
            (!modifyVars && !vars || JSON.stringify(modifyVars) === vars)) {
            // Use local copy
            return css;
        }
    }
};

};

},{}],5:[function(require,module,exports){ var utils = require(“./utils”),

browser = require("./browser");

module.exports = function(window, less, options) {

function errorHTML(e, rootHref) {
    var id = 'less-error-message:' + utils.extractId(rootHref || "");
    var template = '<li><label>{line}</label><pre class="{class}">{content}</pre></li>';
    var elem = window.document.createElement('div'), timer, content, errors = [];
    var filename = e.filename || rootHref;
    var filenameNoPath = filename.match(/([^\/]+(\?.*)?)$/)[1];

    elem.id        = id;
    elem.className = "less-error-message";

    content = '<h3>'  + (e.type || "Syntax") + "Error: " + (e.message || 'There is an error in your .less file') +
        '</h3>' + '<p>in <a href="' + filename   + '">' + filenameNoPath + "</a> ";

    var errorline = function (e, i, classname) {
        if (e.extract[i] !== undefined) {
            errors.push(template.replace(/\{line\}/, (parseInt(e.line, 10) || 0) + (i - 1))
                .replace(/\{class\}/, classname)
                .replace(/\{content\}/, e.extract[i]));
        }
    };

    if (e.extract) {
        errorline(e, 0, '');
        errorline(e, 1, 'line');
        errorline(e, 2, '');
        content += 'on line ' + e.line + ', column ' + (e.column + 1) + ':</p>' +
            '<ul>' + errors.join('') + '</ul>';
    }
    if (e.stack && (e.extract || options.logLevel >= 4)) {
        content += '<br/>Stack Trace</br />' + e.stack.split('\n').slice(1).join('<br/>');
    }
    elem.innerHTML = content;

    // CSS for error messages
    browser.createCSS(window.document, [
        '.less-error-message ul, .less-error-message li {',
        'list-style-type: none;',
        'margin-right: 15px;',
        'padding: 4px 0;',
        'margin: 0;',
        '}',
        '.less-error-message label {',
        'font-size: 12px;',
        'margin-right: 15px;',
        'padding: 4px 0;',
        'color: #cc7777;',
        '}',
        '.less-error-message pre {',
        'color: #dd6666;',
        'padding: 4px 0;',
        'margin: 0;',
        'display: inline-block;',
        '}',
        '.less-error-message pre.line {',
        'color: #ff0000;',
        '}',
        '.less-error-message h3 {',
        'font-size: 20px;',
        'font-weight: bold;',
        'padding: 15px 0 5px 0;',
        'margin: 0;',
        '}',
        '.less-error-message a {',
        'color: #10a',
        '}',
        '.less-error-message .error {',
        'color: red;',
        'font-weight: bold;',
        'padding-bottom: 2px;',
        'border-bottom: 1px dashed red;',
        '}'
    ].join('\n'), { title: 'error-message' });

    elem.style.cssText = [
        "font-family: Arial, sans-serif",
        "border: 1px solid #e00",
        "background-color: #eee",
        "border-radius: 5px",
        "-webkit-border-radius: 5px",
        "-moz-border-radius: 5px",
        "color: #e00",
        "padding: 15px",
        "margin-bottom: 15px"
    ].join(';');

    if (options.env === 'development') {
        timer = setInterval(function () {
            var document = window.document,
                body = document.body;
            if (body) {
                if (document.getElementById(id)) {
                    body.replaceChild(elem, document.getElementById(id));
                } else {
                    body.insertBefore(elem, body.firstChild);
                }
                clearInterval(timer);
            }
        }, 10);
    }
}

function error(e, rootHref) {
    if (!options.errorReporting || options.errorReporting === "html") {
        errorHTML(e, rootHref);
    } else if (options.errorReporting === "console") {
        errorConsole(e, rootHref);
    } else if (typeof options.errorReporting === 'function') {
        options.errorReporting("add", e, rootHref);
    }
}

function removeErrorHTML(path) {
    var node = window.document.getElementById('less-error-message:' + utils.extractId(path));
    if (node) {
        node.parentNode.removeChild(node);
    }
}

function removeErrorConsole(path) {
    //no action
}

function removeError(path) {
    if (!options.errorReporting || options.errorReporting === "html") {
        removeErrorHTML(path);
    } else if (options.errorReporting === "console") {
        removeErrorConsole(path);
    } else if (typeof options.errorReporting === 'function') {
        options.errorReporting("remove", path);
    }
}

function errorConsole(e, rootHref) {
    var template = '{line} {content}';
    var filename = e.filename || rootHref;
    var errors = [];
    var content = (e.type || "Syntax") + "Error: " + (e.message || 'There is an error in your .less file') +
        " in " + filename + " ";

    var errorline = function (e, i, classname) {
        if (e.extract[i] !== undefined) {
            errors.push(template.replace(/\{line\}/, (parseInt(e.line, 10) || 0) + (i - 1))
                .replace(/\{class\}/, classname)
                .replace(/\{content\}/, e.extract[i]));
        }
    };

    if (e.extract) {
        errorline(e, 0, '');
        errorline(e, 1, 'line');
        errorline(e, 2, '');
        content += 'on line ' + e.line + ', column ' + (e.column + 1) + ':\n' +
            errors.join('\n');
    }
    if (e.stack && (e.extract || options.logLevel >= 4)) {
        content += '\nStack Trace\n' + e.stack;
    }
    less.logger.error(content);
}

return {
    add: error,
    remove: removeError
};

};

},{“./browser”:3,“./utils”:10}],6:[function(require,module,exports){ /*global window, XMLHttpRequest */

module.exports = function(options, logger) {

var AbstractFileManager = require("../less/environment/abstract-file-manager.js");

var fileCache = {};

//TODOS - move log somewhere. pathDiff and doing something similar in node. use pathDiff in the other browser file for the initial load

function getXMLHttpRequest() {
    if (window.XMLHttpRequest && (window.location.protocol !== "file:" || !("ActiveXObject" in window))) {
        return new XMLHttpRequest();
    } else {
        try {
            /*global ActiveXObject */
            return new ActiveXObject("Microsoft.XMLHTTP");
        } catch (e) {
            logger.error("browser doesn't support AJAX.");
            return null;
        }
    }
}

var FileManager = function() {
};

FileManager.prototype = new AbstractFileManager();

FileManager.prototype.alwaysMakePathsAbsolute = function alwaysMakePathsAbsolute() {
    return true;
};
FileManager.prototype.join = function join(basePath, laterPath) {
    if (!basePath) {
        return laterPath;
    }
    return this.extractUrlParts(laterPath, basePath).path;
};
FileManager.prototype.doXHR = function doXHR(url, type, callback, errback) {

    var xhr = getXMLHttpRequest();
    var async = options.isFileProtocol ? options.fileAsync : true;

    if (typeof xhr.overrideMimeType === 'function') {
        xhr.overrideMimeType('text/css');
    }
    logger.debug("XHR: Getting '" + url + "'");
    xhr.open('GET', url, async);
    xhr.setRequestHeader('Accept', type || 'text/x-less, text/css; q=0.9, */*; q=0.5');
    xhr.send(null);

    function handleResponse(xhr, callback, errback) {
        if (xhr.status >= 200 && xhr.status < 300) {
            callback(xhr.responseText,
                xhr.getResponseHeader("Last-Modified"));
        } else if (typeof errback === 'function') {
            errback(xhr.status, url);
        }
    }

    if (options.isFileProtocol && !options.fileAsync) {
        if (xhr.status === 0 || (xhr.status >= 200 && xhr.status < 300)) {
            callback(xhr.responseText);
        } else {
            errback(xhr.status, url);
        }
    } else if (async) {
        xhr.onreadystatechange = function () {
            if (xhr.readyState == 4) {
                handleResponse(xhr, callback, errback);
            }
        };
    } else {
        handleResponse(xhr, callback, errback);
    }
};
FileManager.prototype.supports = function(filename, currentDirectory, options, environment) {
    return true;
};

FileManager.prototype.clearFileCache = function() {
    fileCache = {};
};

FileManager.prototype.loadFile = function loadFile(filename, currentDirectory, options, environment, callback) {
    if (currentDirectory && !this.isPathAbsolute(filename)) {
        filename = currentDirectory + filename;
    }

    options = options || {};

    // sheet may be set to the stylesheet for the initial load or a collection of properties including
    // some context variables for imports
    var hrefParts = this.extractUrlParts(filename, window.location.href);
    var href      = hrefParts.url;

    if (options.useFileCache && fileCache[href]) {
        try {
            var lessText = fileCache[href];
            callback(null, { contents: lessText, filename: href, webInfo: { lastModified: new Date() }});
        } catch (e) {
            callback({filename: href, message: "Error loading file " + href + " error was " + e.message});
        }
        return;
    }

    this.doXHR(href, options.mime, function doXHRCallback(data, lastModified) {
        // per file cache
        fileCache[href] = data;

        // Use remote copy (re-parse)
        callback(null, { contents: data, filename: href, webInfo: { lastModified: lastModified }});
    }, function doXHRError(status, url) {
        callback({ type: 'File', message: "'" + url + "' wasn't found (" + status + ")", href: href });
    });
};

return FileManager;

};

},{“../less/environment/abstract-file-manager.js”:15}],7:[function(require,module,exports){ module.exports = function() {

var functionRegistry = require("./../less/functions/function-registry");

function imageSize() {
    throw {
        type: "Runtime",
        message: "Image size functions are not supported in browser version of less"
    };
}

var imageFunctions = {
    "image-size": function(filePathNode) {
        imageSize(this, filePathNode);
        return -1;
    },
    "image-width": function(filePathNode) {
        imageSize(this, filePathNode);
        return -1;
    },
    "image-height": function(filePathNode) {
        imageSize(this, filePathNode);
        return -1;
    }
};

functionRegistry.addMultiple(imageFunctions);

};

},{“./../less/functions/function-registry”:22}],8:[function(require,module,exports){ // // index.js // Should expose the additional browser functions on to the less object // var addDataAttr = require(“./utils”).addDataAttr,

browser = require("./browser");

module.exports = function(window, options) {

var document = window.document;
var less = require('../less')();

//module.exports = less;
less.options = options;
var environment = less.environment,
    FileManager = require("./file-manager")(options, less.logger),
    fileManager = new FileManager();
environment.addFileManager(fileManager);
less.FileManager = FileManager;

require("./log-listener")(less, options);
var errors = require("./error-reporting")(window, less, options);
var cache = less.cache = options.cache || require("./cache")(window, options, less.logger);
require('./image-size')(less.environment);

//Setup user functions
if (options.functions) {
    less.functions.functionRegistry.addMultiple(options.functions);
}

var typePattern = /^text\/(x-)?less$/;

function postProcessCSS(styles) { // deprecated, use a plugin for postprocesstasks
    if (options.postProcessor && typeof options.postProcessor === 'function') {
        styles = options.postProcessor.call(styles, styles) || styles;
    }
    return styles;
}

function clone(obj) {
    var cloned = {};
    for (var prop in obj) {
        if (obj.hasOwnProperty(prop)) {
            cloned[prop] = obj[prop];
        }
    }
    return cloned;
}

// only really needed for phantom
function bind(func, thisArg) {
    var curryArgs = Array.prototype.slice.call(arguments, 2);
    return function() {
        var args = curryArgs.concat(Array.prototype.slice.call(arguments, 0));
        return func.apply(thisArg, args);
    };
}

function loadStyles(modifyVars) {
    var styles = document.getElementsByTagName('style'),
        style;

    for (var i = 0; i < styles.length; i++) {
        style = styles[i];
        if (style.type.match(typePattern)) {
            var instanceOptions = clone(options);
            instanceOptions.modifyVars = modifyVars;
            var lessText = style.innerHTML || '';
            instanceOptions.filename = document.location.href.replace(/#.*$/, '');

            /*jshint loopfunc:true */
            // use closure to store current style
            less.render(lessText, instanceOptions,
                    bind(function(style, e, result) {
                        if (e) {
                            errors.add(e, "inline");
                        } else {
                            style.type = 'text/css';
                            if (style.styleSheet) {
                                style.styleSheet.cssText = result.css;
                            } else {
                                style.innerHTML = result.css;
                            }
                        }
                    }, null, style));
        }
    }
}

function loadStyleSheet(sheet, callback, reload, remaining, modifyVars) {

    var instanceOptions = clone(options);
    addDataAttr(instanceOptions, sheet);
    instanceOptions.mime = sheet.type;

    if (modifyVars) {
        instanceOptions.modifyVars = modifyVars;
    }

    function loadInitialFileCallback(loadedFile) {

        var data = loadedFile.contents,
            path = loadedFile.filename,
            webInfo = loadedFile.webInfo;

        var newFileInfo = {
            currentDirectory: fileManager.getPath(path),
            filename: path,
            rootFilename: path,
            relativeUrls: instanceOptions.relativeUrls};

        newFileInfo.entryPath = newFileInfo.currentDirectory;
        newFileInfo.rootpath = instanceOptions.rootpath || newFileInfo.currentDirectory;

        if (webInfo) {
            webInfo.remaining = remaining;

            var css = cache.getCSS(path, webInfo, instanceOptions.modifyVars);
            if (!reload && css) {
                webInfo.local = true;
                callback(null, css, data, sheet, webInfo, path);
                return;
            }

        }

        //TODO add tests around how this behaves when reloading
        errors.remove(path);

        instanceOptions.rootFileInfo = newFileInfo;
        less.render(data, instanceOptions, function(e, result) {
            if (e) {
                e.href = path;
                callback(e);
            } else {
                result.css = postProcessCSS(result.css);
                cache.setCSS(sheet.href, webInfo.lastModified, instanceOptions.modifyVars, result.css);
                callback(null, result.css, data, sheet, webInfo, path);
            }
        });
    }

    fileManager.loadFile(sheet.href, null, instanceOptions, environment, function(e, loadedFile) {
        if (e) {
            callback(e);
            return;
        }
        loadInitialFileCallback(loadedFile);
    });
}

function loadStyleSheets(callback, reload, modifyVars) {
    for (var i = 0; i < less.sheets.length; i++) {
        loadStyleSheet(less.sheets[i], callback, reload, less.sheets.length - (i + 1), modifyVars);
    }
}

function initRunningMode() {
    if (less.env === 'development') {
        less.watchTimer = setInterval(function () {
            if (less.watchMode) {
                fileManager.clearFileCache();
                loadStyleSheets(function (e, css, _, sheet, webInfo) {
                    if (e) {
                        errors.add(e, e.href || sheet.href);
                    } else if (css) {
                        browser.createCSS(window.document, css, sheet);
                    }
                });
            }
        }, options.poll);
    }
}

//
// Watch mode
//
less.watch   = function () {
    if (!less.watchMode ) {
        less.env = 'development';
        initRunningMode();
    }
    this.watchMode = true;
    return true;
};

less.unwatch = function () {clearInterval(less.watchTimer); this.watchMode = false; return false; };

//
// Synchronously get all <link> tags with the 'rel' attribute set to
// "stylesheet/less".
//
less.registerStylesheetsImmediately = function() {
    var links = document.getElementsByTagName('link');
    less.sheets = [];

    for (var i = 0; i < links.length; i++) {
        if (links[i].rel === 'stylesheet/less' || (links[i].rel.match(/stylesheet/) &&
            (links[i].type.match(typePattern)))) {
            less.sheets.push(links[i]);
        }
    }
};

//
// Asynchronously get all <link> tags with the 'rel' attribute set to
// "stylesheet/less", returning a Promise.
//
less.registerStylesheets = function() {
    return new Promise(function(resolve, reject) {
        less.registerStylesheetsImmediately();
        resolve();
    });
};

//
// With this function, it's possible to alter variables and re-render
// CSS without reloading less-files
//
less.modifyVars = function(record) {
    return less.refresh(true, record, false);
};

less.refresh = function (reload, modifyVars, clearFileCache) {
    if ((reload || clearFileCache) && clearFileCache !== false) {
        fileManager.clearFileCache();
    }
    return new Promise(function (resolve, reject) {
        var startTime, endTime, totalMilliseconds;
        startTime = endTime = new Date();

        loadStyleSheets(function (e, css, _, sheet, webInfo) {
            if (e) {
                errors.add(e, e.href || sheet.href);
                reject(e);
                return;
            }
            if (webInfo.local) {
                less.logger.info("loading " + sheet.href + " from cache.");
            } else {
                less.logger.info("rendered " + sheet.href + " successfully.");
            }
            browser.createCSS(window.document, css, sheet);
            less.logger.info("css for " + sheet.href + " generated in " + (new Date() - endTime) + 'ms');
            if (webInfo.remaining === 0) {
                totalMilliseconds = new Date() - startTime;
                less.logger.info("less has finished. css generated in " + totalMilliseconds + 'ms');
                resolve({
                    startTime: startTime,
                    endTime: endTime,
                    totalMilliseconds: totalMilliseconds,
                    sheets: less.sheets.length
                });
            }
            endTime = new Date();
        }, reload, modifyVars);

        loadStyles(modifyVars);
    });
};

less.refreshStyles = loadStyles;
return less;

};

},{“../less”:31,“./browser”:3,“./cache”:4,“./error-reporting”:5,“./file-manager”:6,“./image-size”:7,“./log-listener”:9,“./utils”:10}],9:[function(require,module,exports){ module.exports = function(less, options) {

var logLevel_debug = 4,
    logLevel_info = 3,
    logLevel_warn = 2,
    logLevel_error = 1;

// The amount of logging in the javascript console.
// 3 - Debug, information and errors
// 2 - Information and errors
// 1 - Errors
// 0 - None
// Defaults to 2
options.logLevel = typeof options.logLevel !== 'undefined' ? options.logLevel : (options.env === 'development' ?  logLevel_info : logLevel_error);

if (!options.loggers) {
    options.loggers = [{
        debug: function(msg) {
            if (options.logLevel >= logLevel_debug) {
                console.log(msg);
            }
        },
        info: function(msg) {
            if (options.logLevel >= logLevel_info) {
                console.log(msg);
            }
        },
        warn: function(msg) {
            if (options.logLevel >= logLevel_warn) {
                console.warn(msg);
            }
        },
        error: function(msg) {
            if (options.logLevel >= logLevel_error) {
                console.error(msg);
            }
        }
    }];
}
for (var i = 0; i < options.loggers.length; i++) {
    less.logger.addListener(options.loggers[i]);
}

};

},{}],10:[function(require,module,exports){ module.exports = {

extractId: function(href) {
    return href.replace(/^[a-z-]+:\/+?[^\/]+/, '')  // Remove protocol & domain
        .replace(/[\?\&]livereload=\w+/, '')        // Remove LiveReload cachebuster
        .replace(/^\//, '')                         // Remove root /
        .replace(/\.[a-zA-Z]+$/, '')                // Remove simple extension
        .replace(/[^\.\w-]+/g, '-')                 // Replace illegal characters
        .replace(/\./g, ':');                       // Replace dots with colons(for valid id)
},
addDataAttr: function(options, tag) {
    for (var opt in tag.dataset) {
        if (tag.dataset.hasOwnProperty(opt)) {
            if (opt === "env" || opt === "dumpLineNumbers" || opt === "rootpath" || opt === "errorReporting") {
                options[opt] = tag.dataset[opt];
            } else {
                try {
                    options[opt] = JSON.parse(tag.dataset[opt]);
                }
                catch(_) {}
            }
        }
    }
}

};

},{}],11:[function(require,module,exports){ var contexts = {}; module.exports = contexts;

var copyFromOriginal = function copyFromOriginal(original, destination, propertiesToCopy) {

if (!original) { return; }

for (var i = 0; i < propertiesToCopy.length; i++) {
    if (original.hasOwnProperty(propertiesToCopy[i])) {
        destination[propertiesToCopy[i]] = original[propertiesToCopy[i]];
    }
}

};

/*

parse is used whilst parsing
*/

var parseCopyProperties = [

// options
'paths',            // option - unmodified - paths to search for imports on
'relativeUrls',     // option - whether to adjust URL's to be relative
'rootpath',         // option - rootpath to append to URL's
'strictImports',    // option -
'insecure',         // option - whether to allow imports from insecure ssl hosts
'dumpLineNumbers',  // option - whether to dump line numbers
'compress',         // option - whether to compress
'syncImport',       // option - whether to import synchronously
'chunkInput',       // option - whether to chunk input. more performant but causes parse issues.
'mime',             // browser only - mime type for sheet import
'useFileCache',     // browser only - whether to use the per file session cache
// context
'processImports',   // option & context - whether to process imports. if false then imports will not be imported.
                    // Used by the import manager to stop multiple import visitors being created.
'pluginManager'     // Used as the plugin manager for the session

];

contexts.Parse = function(options) {

copyFromOriginal(options, this, parseCopyProperties);

if (typeof this.paths === "string") { this.paths = [this.paths]; }

};

var evalCopyProperties = [

'paths',          // additional include paths
'compress',       // whether to compress
'ieCompat',       // whether to enforce IE compatibility (IE8 data-uri)
'strictMath',     // whether math has to be within parenthesis
'strictUnits',    // whether units need to evaluate correctly
'sourceMap',      // whether to output a source map
'importMultiple', // whether we are currently importing multiple copies
'urlArgs',        // whether to add args into url tokens
'javascriptEnabled',// option - whether JavaScript is enabled. if undefined, defaults to true
'pluginManager',  // Used as the plugin manager for the session
'importantScope'  // used to bubble up !important statements
];

contexts.Eval = function(options, frames) {

copyFromOriginal(options, this, evalCopyProperties);

if (typeof this.paths === "string") { this.paths = [this.paths]; }

this.frames = frames || [];
this.importantScope = this.importantScope || [];

};

contexts.Eval.prototype.inParenthesis = function () {

if (!this.parensStack) {
    this.parensStack = [];
}
this.parensStack.push(true);

};

contexts.Eval.prototype.outOfParenthesis = function () {

this.parensStack.pop();

};

contexts.Eval.prototype.isMathOn = function () {

return this.strictMath ? (this.parensStack && this.parensStack.length) : true;

};

contexts.Eval.prototype.isPathRelative = function (path) {

return !/^(?:[a-z-]+:|\/|#)/i.test(path);

};

contexts.Eval.prototype.normalizePath = function( path ) {

var
  segments = path.split("/").reverse(),
  segment;

path = [];
while (segments.length !== 0 ) {
    segment = segments.pop();
    switch( segment ) {
        case ".":
            break;
        case "..":
            if ((path.length === 0) || (path[path.length - 1] === "..")) {
                path.push( segment );
            } else {
                path.pop();
            }
            break;
        default:
            path.push( segment );
            break;
    }
}

return path.join("/");

};

//todo - do the same for the toCSS ?

},{}],12:[function(require,module,exports){ module.exports = {

'aliceblue':'#f0f8ff',
'antiquewhite':'#faebd7',
'aqua':'#00ffff',
'aquamarine':'#7fffd4',
'azure':'#f0ffff',
'beige':'#f5f5dc',
'bisque':'#ffe4c4',
'black':'#000000',
'blanchedalmond':'#ffebcd',
'blue':'#0000ff',
'blueviolet':'#8a2be2',
'brown':'#a52a2a',
'burlywood':'#deb887',
'cadetblue':'#5f9ea0',
'chartreuse':'#7fff00',
'chocolate':'#d2691e',
'coral':'#ff7f50',
'cornflowerblue':'#6495ed',
'cornsilk':'#fff8dc',
'crimson':'#dc143c',
'cyan':'#00ffff',
'darkblue':'#00008b',
'darkcyan':'#008b8b',
'darkgoldenrod':'#b8860b',
'darkgray':'#a9a9a9',
'darkgrey':'#a9a9a9',
'darkgreen':'#006400',
'darkkhaki':'#bdb76b',
'darkmagenta':'#8b008b',
'darkolivegreen':'#556b2f',
'darkorange':'#ff8c00',
'darkorchid':'#9932cc',
'darkred':'#8b0000',
'darksalmon':'#e9967a',
'darkseagreen':'#8fbc8f',
'darkslateblue':'#483d8b',
'darkslategray':'#2f4f4f',
'darkslategrey':'#2f4f4f',
'darkturquoise':'#00ced1',
'darkviolet':'#9400d3',
'deeppink':'#ff1493',
'deepskyblue':'#00bfff',
'dimgray':'#696969',
'dimgrey':'#696969',
'dodgerblue':'#1e90ff',
'firebrick':'#b22222',
'floralwhite':'#fffaf0',
'forestgreen':'#228b22',
'fuchsia':'#ff00ff',
'gainsboro':'#dcdcdc',
'ghostwhite':'#f8f8ff',
'gold':'#ffd700',
'goldenrod':'#daa520',
'gray':'#808080',
'grey':'#808080',
'green':'#008000',
'greenyellow':'#adff2f',
'honeydew':'#f0fff0',
'hotpink':'#ff69b4',
'indianred':'#cd5c5c',
'indigo':'#4b0082',
'ivory':'#fffff0',
'khaki':'#f0e68c',
'lavender':'#e6e6fa',
'lavenderblush':'#fff0f5',
'lawngreen':'#7cfc00',
'lemonchiffon':'#fffacd',
'lightblue':'#add8e6',
'lightcoral':'#f08080',
'lightcyan':'#e0ffff',
'lightgoldenrodyellow':'#fafad2',
'lightgray':'#d3d3d3',
'lightgrey':'#d3d3d3',
'lightgreen':'#90ee90',
'lightpink':'#ffb6c1',
'lightsalmon':'#ffa07a',
'lightseagreen':'#20b2aa',
'lightskyblue':'#87cefa',
'lightslategray':'#778899',
'lightslategrey':'#778899',
'lightsteelblue':'#b0c4de',
'lightyellow':'#ffffe0',
'lime':'#00ff00',
'limegreen':'#32cd32',
'linen':'#faf0e6',
'magenta':'#ff00ff',
'maroon':'#800000',
'mediumaquamarine':'#66cdaa',
'mediumblue':'#0000cd',
'mediumorchid':'#ba55d3',
'mediumpurple':'#9370d8',
'mediumseagreen':'#3cb371',
'mediumslateblue':'#7b68ee',
'mediumspringgreen':'#00fa9a',
'mediumturquoise':'#48d1cc',
'mediumvioletred':'#c71585',
'midnightblue':'#191970',
'mintcream':'#f5fffa',
'mistyrose':'#ffe4e1',
'moccasin':'#ffe4b5',
'navajowhite':'#ffdead',
'navy':'#000080',
'oldlace':'#fdf5e6',
'olive':'#808000',
'olivedrab':'#6b8e23',
'orange':'#ffa500',
'orangered':'#ff4500',
'orchid':'#da70d6',
'palegoldenrod':'#eee8aa',
'palegreen':'#98fb98',
'paleturquoise':'#afeeee',
'palevioletred':'#d87093',
'papayawhip':'#ffefd5',
'peachpuff':'#ffdab9',
'peru':'#cd853f',
'pink':'#ffc0cb',
'plum':'#dda0dd',
'powderblue':'#b0e0e6',
'purple':'#800080',
'rebeccapurple':'#663399',
'red':'#ff0000',
'rosybrown':'#bc8f8f',
'royalblue':'#4169e1',
'saddlebrown':'#8b4513',
'salmon':'#fa8072',
'sandybrown':'#f4a460',
'seagreen':'#2e8b57',
'seashell':'#fff5ee',
'sienna':'#a0522d',
'silver':'#c0c0c0',
'skyblue':'#87ceeb',
'slateblue':'#6a5acd',
'slategray':'#708090',
'slategrey':'#708090',
'snow':'#fffafa',
'springgreen':'#00ff7f',
'steelblue':'#4682b4',
'tan':'#d2b48c',
'teal':'#008080',
'thistle':'#d8bfd8',
'tomato':'#ff6347',
'turquoise':'#40e0d0',
'violet':'#ee82ee',
'wheat':'#f5deb3',
'white':'#ffffff',
'whitesmoke':'#f5f5f5',
'yellow':'#ffff00',
'yellowgreen':'#9acd32'

}; },{}],13:[function(require,module,exports){ module.exports = {

colors: require("./colors"),
unitConversions: require("./unit-conversions")

};

},{“./colors”:12,“./unit-conversions”:14}],14:[function(require,module,exports){ module.exports = {

length: {
    'm': 1,
    'cm': 0.01,
    'mm': 0.001,
    'in': 0.0254,
    'px': 0.0254 / 96,
    'pt': 0.0254 / 72,
    'pc': 0.0254 / 72 * 12
},
duration: {
    's': 1,
    'ms': 0.001
},
angle: {
    'rad': 1 / (2 * Math.PI),
    'deg': 1 / 360,
    'grad': 1 / 400,
    'turn': 1
}

}; },{}],15:[function(require,module,exports){ var abstractFileManager = function() { };

abstractFileManager.prototype.getPath = function (filename) {

var j = filename.lastIndexOf('?');
if (j > 0) {
    filename = filename.slice(0, j);
}
j = filename.lastIndexOf('/');
if (j < 0) {
    j = filename.lastIndexOf('\\');
}
if (j < 0) {
    return "";
}
return filename.slice(0, j + 1);

};

abstractFileManager.prototype.tryAppendExtension = function(path, ext) {

return /(\.[a-z]*$)|([\?;].*)$/.test(path) ? path : path + ext;

};

abstractFileManager.prototype.tryAppendLessExtension = function(path) {

return this.tryAppendExtension(path, '.less');

};

abstractFileManager.prototype.supportsSync = function() {

return false;

};

abstractFileManager.prototype.alwaysMakePathsAbsolute = function() {

return false;

};

abstractFileManager.prototype.isPathAbsolute = function(filename) {

return (/^(?:[a-z-]+:|\/|\\|#)/i).test(filename);

};

abstractFileManager.prototype.join = function(basePath, laterPath) {

if (!basePath) {
    return laterPath;
}
return basePath + laterPath;

}; abstractFileManager.prototype.pathDiff = function pathDiff(url, baseUrl) {

// diff between two paths to create a relative path

var urlParts = this.extractUrlParts(url),
    baseUrlParts = this.extractUrlParts(baseUrl),
    i, max, urlDirectories, baseUrlDirectories, diff = "";
if (urlParts.hostPart !== baseUrlParts.hostPart) {
    return "";
}
max = Math.max(baseUrlParts.directories.length, urlParts.directories.length);
for (i = 0; i < max; i++) {
    if (baseUrlParts.directories[i] !== urlParts.directories[i]) { break; }
}
baseUrlDirectories = baseUrlParts.directories.slice(i);
urlDirectories = urlParts.directories.slice(i);
for (i = 0; i < baseUrlDirectories.length - 1; i++) {
    diff += "../";
}
for (i = 0; i < urlDirectories.length - 1; i++) {
    diff += urlDirectories[i] + "/";
}
return diff;

}; // helper function, not part of API abstractFileManager.prototype.extractUrlParts = function extractUrlParts(url, baseUrl) {

// urlParts[1] = protocol&hostname || /
// urlParts[2] = / if path relative to host base
// urlParts[3] = directories
// urlParts[4] = filename
// urlParts[5] = parameters

var urlPartsRegex = /^((?:[a-z-]+:)?\/+?(?:[^\/\?#]*\/)|([\/\\]))?((?:[^\/\\\?#]*[\/\\])*)([^\/\\\?#]*)([#\?].*)?$/i,
    urlParts = url.match(urlPartsRegex),
    returner = {}, directories = [], i, baseUrlParts;

if (!urlParts) {
    throw new Error("Could not parse sheet href - '" + url + "'");
}

// Stylesheets in IE don't always return the full path
if (baseUrl && (!urlParts[1] || urlParts[2])) {
    baseUrlParts = baseUrl.match(urlPartsRegex);
    if (!baseUrlParts) {
        throw new Error("Could not parse page url - '" + baseUrl + "'");
    }
    urlParts[1] = urlParts[1] || baseUrlParts[1] || "";
    if (!urlParts[2]) {
        urlParts[3] = baseUrlParts[3] + urlParts[3];
    }
}

if (urlParts[3]) {
    directories = urlParts[3].replace(/\\/g, "/").split("/");

    // extract out . before .. so .. doesn't absorb a non-directory
    for (i = 0; i < directories.length; i++) {
        if (directories[i] === ".") {
            directories.splice(i, 1);
            i -= 1;
        }
    }

    for (i = 0; i < directories.length; i++) {
        if (directories[i] === ".." && i > 0) {
            directories.splice(i - 1, 2);
            i -= 2;
        }
    }
}

returner.hostPart = urlParts[1];
returner.directories = directories;
returner.path = (urlParts[1] || "") + directories.join("/");
returner.fileUrl = returner.path + (urlParts[4] || "");
returner.url = returner.fileUrl + (urlParts[5] || "");
return returner;

};

module.exports = abstractFileManager;

},{}],16:[function(require,module,exports){ var logger = require(“../logger”); var environment = function(externalEnvironment, fileManagers) {

this.fileManagers = fileManagers || [];
externalEnvironment = externalEnvironment || {};

var optionalFunctions = ["encodeBase64", "mimeLookup", "charsetLookup", "getSourceMapGenerator"],
    requiredFunctions = [],
    functions = requiredFunctions.concat(optionalFunctions);

for (var i = 0; i < functions.length; i++) {
    var propName = functions[i],
        environmentFunc = externalEnvironment[propName];
    if (environmentFunc) {
        this[propName] = environmentFunc.bind(externalEnvironment);
    } else if (i < requiredFunctions.length) {
        this.warn("missing required function in environment - " + propName);
    }
}

};

environment.prototype.getFileManager = function (filename, currentDirectory, options, environment, isSync) {

if (!filename) {
    logger.warn("getFileManager called with no filename.. Please report this issue. continuing.");
}
if (currentDirectory == null) {
    logger.warn("getFileManager called with null directory.. Please report this issue. continuing.");
}

var fileManagers = this.fileManagers;
if (options.pluginManager) {
    fileManagers = [].concat(fileManagers).concat(options.pluginManager.getFileManagers());
}
for (var i = fileManagers.length - 1; i >= 0 ; i--) {
    var fileManager = fileManagers[i];
    if (fileManager[isSync ? "supportsSync" : "supports"](filename, currentDirectory, options, environment)) {
        return fileManager;
    }
}
return null;

};

environment.prototype.addFileManager = function (fileManager) {

this.fileManagers.push(fileManager);

};

environment.prototype.clearFileManagers = function () {

this.fileManagers = [];

};

module.exports = environment;

},{“../logger”:33}],17:[function(require,module,exports){ var Color = require(“../tree/color”),

functionRegistry = require("./function-registry");

// Color Blending // ref: www.w3.org/TR/compositing-1

function colorBlend(mode, color1, color2) {

var ab = color1.alpha, cb, // backdrop
    as = color2.alpha, cs, // source
    ar, cr, r = [];        // result

ar = as + ab * (1 - as);
for (var i = 0; i < 3; i++) {
    cb = color1.rgb[i] / 255;
    cs = color2.rgb[i] / 255;
    cr = mode(cb, cs);
    if (ar) {
        cr = (as * cs + ab * (cb -
              as * (cb + cs - cr))) / ar;
    }
    r[i] = cr * 255;
}

return new Color(r, ar);

}

var colorBlendModeFunctions = {

multiply: function(cb, cs) {
    return cb * cs;
},
screen: function(cb, cs) {
    return cb + cs - cb * cs;
},
overlay: function(cb, cs) {
    cb *= 2;
    return (cb <= 1) ?
        colorBlendModeFunctions.multiply(cb, cs) :
        colorBlendModeFunctions.screen(cb - 1, cs);
},
softlight: function(cb, cs) {
    var d = 1, e = cb;
    if (cs > 0.5) {
        e = 1;
        d = (cb > 0.25) ? Math.sqrt(cb)
            : ((16 * cb - 12) * cb + 4) * cb;
    }
    return cb - (1 - 2 * cs) * e * (d - cb);
},
hardlight: function(cb, cs) {
    return colorBlendModeFunctions.overlay(cs, cb);
},
difference: function(cb, cs) {
    return Math.abs(cb - cs);
},
exclusion: function(cb, cs) {
    return cb + cs - 2 * cb * cs;
},

// non-w3c functions:
average: function(cb, cs) {
    return (cb + cs) / 2;
},
negation: function(cb, cs) {
    return 1 - Math.abs(cb + cs - 1);
}

};

for (var f in colorBlendModeFunctions) {

if (colorBlendModeFunctions.hasOwnProperty(f)) {
    colorBlend[f] = colorBlend.bind(null, colorBlendModeFunctions[f]);
}

}

functionRegistry.addMultiple(colorBlend);

},{“../tree/color”:50,“./function-registry”:22}],18:[function(require,module,exports){ var Dimension = require(“../tree/dimension”),

Color = require("../tree/color"),
Quoted = require("../tree/quoted"),
Anonymous = require("../tree/anonymous"),
functionRegistry = require("./function-registry"),
colorFunctions;

function clamp(val) {

return Math.min(1, Math.max(0, val));

} function hsla(color) {

return colorFunctions.hsla(color.h, color.s, color.l, color.a);

} function number(n) {

if (n instanceof Dimension) {
    return parseFloat(n.unit.is('%') ? n.value / 100 : n.value);
} else if (typeof n === 'number') {
    return n;
} else {
    throw {
        type: "Argument",
        message: "color functions take numbers as parameters"
    };
}

} function scaled(n, size) {

if (n instanceof Dimension && n.unit.is('%')) {
    return parseFloat(n.value * size / 100);
} else {
    return number(n);
}

} colorFunctions = {

rgb: function (r, g, b) {
    return colorFunctions.rgba(r, g, b, 1.0);
},
rgba: function (r, g, b, a) {
    var rgb = [r, g, b].map(function (c) { return scaled(c, 255); });
    a = number(a);
    return new Color(rgb, a);
},
hsl: function (h, s, l) {
    return colorFunctions.hsla(h, s, l, 1.0);
},
hsla: function (h, s, l, a) {
    function hue(h) {
        h = h < 0 ? h + 1 : (h > 1 ? h - 1 : h);
        if (h * 6 < 1) {
            return m1 + (m2 - m1) * h * 6;
        }
        else if (h * 2 < 1) {
            return m2;
        }
        else if (h * 3 < 2) {
            return m1 + (m2 - m1) * (2 / 3 - h) * 6;
        }
        else {
            return m1;
        }
    }

    h = (number(h) % 360) / 360;
    s = clamp(number(s)); l = clamp(number(l)); a = clamp(number(a));

    var m2 = l <= 0.5 ? l * (s + 1) : l + s - l * s;
    var m1 = l * 2 - m2;

    return colorFunctions.rgba(hue(h + 1 / 3) * 255,
        hue(h)       * 255,
        hue(h - 1 / 3) * 255,
        a);
},

hsv: function(h, s, v) {
    return colorFunctions.hsva(h, s, v, 1.0);
},

hsva: function(h, s, v, a) {
    h = ((number(h) % 360) / 360) * 360;
    s = number(s); v = number(v); a = number(a);

    var i, f;
    i = Math.floor((h / 60) % 6);
    f = (h / 60) - i;

    var vs = [v,
        v * (1 - s),
        v * (1 - f * s),
        v * (1 - (1 - f) * s)];
    var perm = [[0, 3, 1],
        [2, 0, 1],
        [1, 0, 3],
        [1, 2, 0],
        [3, 1, 0],
        [0, 1, 2]];

    return colorFunctions.rgba(vs[perm[i][0]] * 255,
        vs[perm[i][1]] * 255,
        vs[perm[i][2]] * 255,
        a);
},

hue: function (color) {
    return new Dimension(color.toHSL().h);
},
saturation: function (color) {
    return new Dimension(color.toHSL().s * 100, '%');
},
lightness: function (color) {
    return new Dimension(color.toHSL().l * 100, '%');
},
hsvhue: function(color) {
    return new Dimension(color.toHSV().h);
},
hsvsaturation: function (color) {
    return new Dimension(color.toHSV().s * 100, '%');
},
hsvvalue: function (color) {
    return new Dimension(color.toHSV().v * 100, '%');
},
red: function (color) {
    return new Dimension(color.rgb[0]);
},
green: function (color) {
    return new Dimension(color.rgb[1]);
},
blue: function (color) {
    return new Dimension(color.rgb[2]);
},
alpha: function (color) {
    return new Dimension(color.toHSL().a);
},
luma: function (color) {
    return new Dimension(color.luma() * color.alpha * 100, '%');
},
luminance: function (color) {
    var luminance =
        (0.2126 * color.rgb[0] / 255) +
            (0.7152 * color.rgb[1] / 255) +
            (0.0722 * color.rgb[2] / 255);

    return new Dimension(luminance * color.alpha * 100, '%');
},
saturate: function (color, amount, method) {
    // filter: saturate(3.2);
    // should be kept as is, so check for color
    if (!color.rgb) {
        return null;
    }
    var hsl = color.toHSL();

    if (typeof method !== "undefined" && method.value === "relative") {
        hsl.s +=  hsl.s * amount.value / 100;
    }
    else {
        hsl.s += amount.value / 100;
    }
    hsl.s = clamp(hsl.s);
    return hsla(hsl);
},
desaturate: function (color, amount, method) {
    var hsl = color.toHSL();

    if (typeof method !== "undefined" && method.value === "relative") {
        hsl.s -=  hsl.s * amount.value / 100;
    }
    else {
        hsl.s -= amount.value / 100;
    }
    hsl.s = clamp(hsl.s);
    return hsla(hsl);
},
lighten: function (color, amount, method) {
    var hsl = color.toHSL();

    if (typeof method !== "undefined" && method.value === "relative") {
        hsl.l +=  hsl.l * amount.value / 100;
    }
    else {
        hsl.l += amount.value / 100;
    }
    hsl.l = clamp(hsl.l);
    return hsla(hsl);
},
darken: function (color, amount, method) {
    var hsl = color.toHSL();

    if (typeof method !== "undefined" && method.value === "relative") {
        hsl.l -=  hsl.l * amount.value / 100;
    }
    else {
        hsl.l -= amount.value / 100;
    }
    hsl.l = clamp(hsl.l);
    return hsla(hsl);
},
fadein: function (color, amount, method) {
    var hsl = color.toHSL();

    if (typeof method !== "undefined" && method.value === "relative") {
        hsl.a +=  hsl.a * amount.value / 100;
    }
    else {
        hsl.a += amount.value / 100;
    }
    hsl.a = clamp(hsl.a);
    return hsla(hsl);
},
fadeout: function (color, amount, method) {
    var hsl = color.toHSL();

    if (typeof method !== "undefined" && method.value === "relative") {
        hsl.a -=  hsl.a * amount.value / 100;
    }
    else {
        hsl.a -= amount.value / 100;
    }
    hsl.a = clamp(hsl.a);
    return hsla(hsl);
},
fade: function (color, amount) {
    var hsl = color.toHSL();

    hsl.a = amount.value / 100;
    hsl.a = clamp(hsl.a);
    return hsla(hsl);
},
spin: function (color, amount) {
    var hsl = color.toHSL();
    var hue = (hsl.h + amount.value) % 360;

    hsl.h = hue < 0 ? 360 + hue : hue;

    return hsla(hsl);
},
//
// Copyright (c) 2006-2009 Hampton Catlin, Nathan Weizenbaum, and Chris Eppstein
// http://sass-lang.com
//
mix: function (color1, color2, weight) {
    if (!color1.toHSL || !color2.toHSL) {
        console.log(color2.type);
        console.dir(color2);
    }
    if (!weight) {
        weight = new Dimension(50);
    }
    var p = weight.value / 100.0;
    var w = p * 2 - 1;
    var a = color1.toHSL().a - color2.toHSL().a;

    var w1 = (((w * a == -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0;
    var w2 = 1 - w1;

    var rgb = [color1.rgb[0] * w1 + color2.rgb[0] * w2,
        color1.rgb[1] * w1 + color2.rgb[1] * w2,
        color1.rgb[2] * w1 + color2.rgb[2] * w2];

    var alpha = color1.alpha * p + color2.alpha * (1 - p);

    return new Color(rgb, alpha);
},
greyscale: function (color) {
    return colorFunctions.desaturate(color, new Dimension(100));
},
contrast: function (color, dark, light, threshold) {
    // filter: contrast(3.2);
    // should be kept as is, so check for color
    if (!color.rgb) {
        return null;
    }
    if (typeof light === 'undefined') {
        light = colorFunctions.rgba(255, 255, 255, 1.0);
    }
    if (typeof dark === 'undefined') {
        dark = colorFunctions.rgba(0, 0, 0, 1.0);
    }
    //Figure out which is actually light and dark!
    if (dark.luma() > light.luma()) {
        var t = light;
        light = dark;
        dark = t;
    }
    if (typeof threshold === 'undefined') {
        threshold = 0.43;
    } else {
        threshold = number(threshold);
    }
    if (color.luma() < threshold) {
        return light;
    } else {
        return dark;
    }
},
argb: function (color) {
    return new Anonymous(color.toARGB());
},
color: function(c) {
    if ((c instanceof Quoted) &&
        (/^#([a-f0-9]{6}|[a-f0-9]{3})$/i.test(c.value))) {
        return new Color(c.value.slice(1));
    }
    if ((c instanceof Color) || (c = Color.fromKeyword(c.value))) {
        c.value = undefined;
        return c;
    }
    throw {
        type:    "Argument",
        message: "argument must be a color keyword or 3/6 digit hex e.g. #FFF"
    };
},
tint: function(color, amount) {
    return colorFunctions.mix(colorFunctions.rgb(255, 255, 255), color, amount);
},
shade: function(color, amount) {
    return colorFunctions.mix(colorFunctions.rgb(0, 0, 0), color, amount);
}

}; functionRegistry.addMultiple(colorFunctions);

},{“../tree/anonymous”:46,“../tree/color”:50,“../tree/dimension”:56,“../tree/quoted”:73,“./function-registry”:22}],19:[function(require,module,exports){ module.exports = function(environment) {

var Quoted = require("../tree/quoted"),
    URL = require("../tree/url"),
    functionRegistry = require("./function-registry"),
    fallback = function(functionThis, node) {
        return new URL(node, functionThis.index, functionThis.currentFileInfo).eval(functionThis.context);
    },
    logger = require('../logger');

functionRegistry.add("data-uri", function(mimetypeNode, filePathNode) {

    if (!filePathNode) {
        filePathNode = mimetypeNode;
        mimetypeNode = null;
    }

    var mimetype = mimetypeNode && mimetypeNode.value;
    var filePath = filePathNode.value;
    var currentFileInfo = this.currentFileInfo;
    var currentDirectory = currentFileInfo.relativeUrls ?
        currentFileInfo.currentDirectory : currentFileInfo.entryPath;

    var fragmentStart = filePath.indexOf('#');
    var fragment = '';
    if (fragmentStart !== -1) {
        fragment = filePath.slice(fragmentStart);
        filePath = filePath.slice(0, fragmentStart);
    }

    var fileManager = environment.getFileManager(filePath, currentDirectory, this.context, environment, true);

    if (!fileManager) {
        return fallback(this, filePathNode);
    }

    var useBase64 = false;

    // detect the mimetype if not given
    if (!mimetypeNode) {

        mimetype = environment.mimeLookup(filePath);

        if (mimetype === "image/svg+xml") {
            useBase64 = false;
        } else {
            // use base 64 unless it's an ASCII or UTF-8 format
            var charset = environment.charsetLookup(mimetype);
            useBase64 = ['US-ASCII', 'UTF-8'].indexOf(charset) < 0;
        }
        if (useBase64) { mimetype += ';base64'; }
    }
    else {
        useBase64 = /;base64$/.test(mimetype);
    }

    var fileSync = fileManager.loadFileSync(filePath, currentDirectory, this.context, environment);
    if (!fileSync.contents) {
        logger.warn("Skipped data-uri embedding of " + filePath + " because file not found");
        return fallback(this, filePathNode || mimetypeNode);
    }
    var buf = fileSync.contents;
    if (useBase64 && !environment.encodeBase64) {
        return fallback(this, filePathNode);
    }

    buf = useBase64 ? environment.encodeBase64(buf) : encodeURIComponent(buf);

    var uri = "data:" + mimetype + ',' + buf + fragment;

    // IE8 cannot handle a data-uri larger than 32,768 characters. If this is exceeded
    // and the --ieCompat flag is enabled, return a normal url() instead.
    var DATA_URI_MAX = 32768;
    if (uri.length >= DATA_URI_MAX) {

        if (this.context.ieCompat !== false) {
            logger.warn("Skipped data-uri embedding of " + filePath + " because its size (" + uri.length +
                " characters) exceeds IE8-safe " + DATA_URI_MAX + " characters!");

            return fallback(this, filePathNode || mimetypeNode);
        }
    }

    return new URL(new Quoted('"' + uri + '"', uri, false, this.index, this.currentFileInfo), this.index, this.currentFileInfo);
});

};

},{“../logger”:33,“../tree/quoted”:73,“../tree/url”:80,“./function-registry”:22}],20:[function(require,module,exports){ var Keyword = require(“../tree/keyword”),

functionRegistry = require("./function-registry");

var defaultFunc = {

eval: function () {
    var v = this.value_, e = this.error_;
    if (e) {
        throw e;
    }
    if (v != null) {
        return v ? Keyword.True : Keyword.False;
    }
},
value: function (v) {
    this.value_ = v;
},
error: function (e) {
    this.error_ = e;
},
reset: function () {
    this.value_ = this.error_ = null;
}

};

functionRegistry.add(“default”, defaultFunc.eval.bind(defaultFunc));

module.exports = defaultFunc;

},{“../tree/keyword”:65,“./function-registry”:22}],21:[function(require,module,exports){ var Expression = require(“../tree/expression”);

var functionCaller = function(name, context, index, currentFileInfo) {

this.name = name.toLowerCase();
this.index = index;
this.context = context;
this.currentFileInfo = currentFileInfo;

this.func = context.frames[0].functionRegistry.get(this.name);

}; functionCaller.prototype.isValid = function() {

return Boolean(this.func);

}; functionCaller.prototype.call = function(args) {

// This code is terrible and should be replaced as per this issue...
// https://github.com/less/less.js/issues/2477
if (Array.isArray(args)) {
    args = args.filter(function (item) {
        if (item.type === "Comment") {
            return false;
        }
        return true;
    })
    .map(function(item) {
        if (item.type === "Expression") {
            var subNodes = item.value.filter(function (item) {
                if (item.type === "Comment") {
                    return false;
                }
                return true;
            });
            if (subNodes.length === 1) {
                return subNodes[0];
            } else {
                return new Expression(subNodes);
            }
        }
        return item;
    });
}

return this.func.apply(this, args);

};

module.exports = functionCaller;

},{“../tree/expression”:59}],22:[function(require,module,exports){ function makeRegistry( base ) {

return {
    _data: {},
    add: function(name, func) {
        // precautionary case conversion, as later querying of
        // the registry by function-caller uses lower case as well.
        name = name.toLowerCase();

        if (this._data.hasOwnProperty(name)) {
            //TODO warn
        }
        this._data[name] = func;
    },
    addMultiple: function(functions) {
        Object.keys(functions).forEach(
            function(name) {
                this.add(name, functions[name]);
            }.bind(this));
    },
    get: function(name) {
        return this._data[name] || ( base && base.get( name ));
    },
    inherit : function() {
        return makeRegistry( this );
    }
};

}

module.exports = makeRegistry( null ); },{}],23:[function(require,module,exports){ module.exports = function(environment) {

var functions = {
    functionRegistry: require("./function-registry"),
    functionCaller: require("./function-caller")
};

//register functions
require("./default");
require("./color");
require("./color-blending");
require("./data-uri")(environment);
require("./math");
require("./number");
require("./string");
require("./svg")(environment);
require("./types");

return functions;

};

},{“./color”:18,“./color-blending”:17,“./data-uri”:19,“./default”:20,“./function-caller”:21,“./function-registry”:22,“./math”:25,“./number”:26,“./string”:27,“./svg”:28,“./types”:29}],24:[function(require,module,exports){ var Dimension = require(“../tree/dimension”);

var MathHelper = function() { }; MathHelper._math = function (fn, unit, n) {

if (!(n instanceof Dimension)) {
    throw { type: "Argument", message: "argument must be a number" };
}
if (unit == null) {
    unit = n.unit;
} else {
    n = n.unify();
}
return new Dimension(fn(parseFloat(n.value)), unit);

}; module.exports = MathHelper; },{“../tree/dimension”:56}],25:[function(require,module,exports){ var functionRegistry = require(“./function-registry”),

mathHelper = require("./math-helper.js");

var mathFunctions = {

// name,  unit
ceil:  null,
floor: null,
sqrt:  null,
abs:   null,
tan:   "",
sin:   "",
cos:   "",
atan:  "rad",
asin:  "rad",
acos:  "rad"

};

for (var f in mathFunctions) {

if (mathFunctions.hasOwnProperty(f)) {
    mathFunctions[f] = mathHelper._math.bind(null, Math[f], mathFunctions[f]);
}

}

mathFunctions.round = function (n, f) {

var fraction = typeof f === "undefined" ? 0 : f.value;
return mathHelper._math(function(num) { return num.toFixed(fraction); }, null, n);

};

functionRegistry.addMultiple(mathFunctions);

},{“./function-registry”:22,“./math-helper.js”:24}],26:[function(require,module,exports){ var Dimension = require(“../tree/dimension”),

Anonymous = require("../tree/anonymous"),
functionRegistry = require("./function-registry"),
mathHelper = require("./math-helper.js");

var minMax = function (isMin, args) {

args = Array.prototype.slice.call(args);
switch(args.length) {
    case 0: throw { type: "Argument", message: "one or more arguments required" };
}
var i, j, current, currentUnified, referenceUnified, unit, unitStatic, unitClone,
    order  = [], // elems only contains original argument values.
    values = {}; // key is the unit.toString() for unified Dimension values,
// value is the index into the order array.
for (i = 0; i < args.length; i++) {
    current = args[i];
    if (!(current instanceof Dimension)) {
        if (Array.isArray(args[i].value)) {
            Array.prototype.push.apply(args, Array.prototype.slice.call(args[i].value));
        }
        continue;
    }
    currentUnified = current.unit.toString() === "" && unitClone !== undefined ? new Dimension(current.value, unitClone).unify() : current.unify();
    unit = currentUnified.unit.toString() === "" && unitStatic !== undefined ? unitStatic : currentUnified.unit.toString();
    unitStatic = unit !== "" && unitStatic === undefined || unit !== "" && order[0].unify().unit.toString() === "" ? unit : unitStatic;
    unitClone = unit !== "" && unitClone === undefined ? current.unit.toString() : unitClone;
    j = values[""] !== undefined && unit !== "" && unit === unitStatic ? values[""] : values[unit];
    if (j === undefined) {
        if (unitStatic !== undefined && unit !== unitStatic) {
            throw{ type: "Argument", message: "incompatible types" };
        }
        values[unit] = order.length;
        order.push(current);
        continue;
    }
    referenceUnified = order[j].unit.toString() === "" && unitClone !== undefined ? new Dimension(order[j].value, unitClone).unify() : order[j].unify();
    if ( isMin && currentUnified.value < referenceUnified.value ||
        !isMin && currentUnified.value > referenceUnified.value) {
        order[j] = current;
    }
}
if (order.length == 1) {
    return order[0];
}
args = order.map(function (a) { return a.toCSS(this.context); }).join(this.context.compress ? "," : ", ");
return new Anonymous((isMin ? "min" : "max") + "(" + args + ")");

}; functionRegistry.addMultiple({

min: function () {
    return minMax(true, arguments);
},
max: function () {
    return minMax(false, arguments);
},
convert: function (val, unit) {
    return val.convertTo(unit.value);
},
pi: function () {
    return new Dimension(Math.PI);
},
mod: function(a, b) {
    return new Dimension(a.value % b.value, a.unit);
},
pow: function(x, y) {
    if (typeof x === "number" && typeof y === "number") {
        x = new Dimension(x);
        y = new Dimension(y);
    } else if (!(x instanceof Dimension) || !(y instanceof Dimension)) {
        throw { type: "Argument", message: "arguments must be numbers" };
    }

    return new Dimension(Math.pow(x.value, y.value), x.unit);
},
percentage: function (n) {
    var result = mathHelper._math(function(num) {
        return num * 100;
    }, '%', n);

    return result;
}

});

},{“../tree/anonymous”:46,“../tree/dimension”:56,“./function-registry”:22,“./math-helper.js”:24}],27:[function(require,module,exports){ var Quoted = require(“../tree/quoted”),

Anonymous = require("../tree/anonymous"),
JavaScript = require("../tree/javascript"),
functionRegistry = require("./function-registry");

functionRegistry.addMultiple({

e: function (str) {
    return new Anonymous(str instanceof JavaScript ? str.evaluated : str.value);
},
escape: function (str) {
    return new Anonymous(
        encodeURI(str.value).replace(/=/g, "%3D").replace(/:/g, "%3A").replace(/#/g, "%23").replace(/;/g, "%3B")
            .replace(/\(/g, "%28").replace(/\)/g, "%29"));
},
replace: function (string, pattern, replacement, flags) {
    var result = string.value;
    replacement = (replacement.type === "Quoted") ?
        replacement.value : replacement.toCSS();
    result = result.replace(new RegExp(pattern.value, flags ? flags.value : ''), replacement);
    return new Quoted(string.quote || '', result, string.escaped);
},
'%': function (string /* arg, arg, ...*/) {
    var args = Array.prototype.slice.call(arguments, 1),
        result = string.value;

    for (var i = 0; i < args.length; i++) {
        /*jshint loopfunc:true */
        result = result.replace(/%[sda]/i, function(token) {
            var value = ((args[i].type === "Quoted") &&
                token.match(/s/i)) ? args[i].value : args[i].toCSS();
            return token.match(/[A-Z]$/) ? encodeURIComponent(value) : value;
        });
    }
    result = result.replace(/%%/g, '%');
    return new Quoted(string.quote || '', result, string.escaped);
}

});

},{“../tree/anonymous”:46,“../tree/javascript”:63,“../tree/quoted”:73,“./function-registry”:22}],28:[function(require,module,exports){ module.exports = function(environment) {

var Dimension = require("../tree/dimension"),
    Color = require("../tree/color"),
    Expression = require("../tree/expression"),
    Quoted = require("../tree/quoted"),
    URL = require("../tree/url"),
    functionRegistry = require("./function-registry");

functionRegistry.add("svg-gradient", function(direction) {

    var stops,
        gradientDirectionSvg,
        gradientType = "linear",
        rectangleDimension = 'x="0" y="0" width="1" height="1"',
        renderEnv = {compress: false},
        returner,
        directionValue = direction.toCSS(renderEnv),
                    i, color, position, positionValue, alpha;

    function throwArgumentDescriptor() {
        throw { type: "Argument",
                                    message: "svg-gradient expects direction, start_color [start_position], [color position,]...," +
                                                    " end_color [end_position] or direction, color list" };
    }

    if (arguments.length == 2) {
        if (arguments[1].value.length < 2) {
            throwArgumentDescriptor();
        }
        stops = arguments[1].value;
    } else if (arguments.length < 3) {
        throwArgumentDescriptor();
    } else {
        stops = Array.prototype.slice.call(arguments, 1);
    }

    switch (directionValue) {
        case "to bottom":
            gradientDirectionSvg = 'x1="0%" y1="0%" x2="0%" y2="100%"';
            break;
        case "to right":
            gradientDirectionSvg = 'x1="0%" y1="0%" x2="100%" y2="0%"';
            break;
        case "to bottom right":
            gradientDirectionSvg = 'x1="0%" y1="0%" x2="100%" y2="100%"';
            break;
        case "to top right":
            gradientDirectionSvg = 'x1="0%" y1="100%" x2="100%" y2="0%"';
            break;
        case "ellipse":
        case "ellipse at center":
            gradientType = "radial";
            gradientDirectionSvg = 'cx="50%" cy="50%" r="75%"';
            rectangleDimension = 'x="-50" y="-50" width="101" height="101"';
            break;
        default:
            throw { type: "Argument", message: "svg-gradient direction must be 'to bottom', 'to right'," +
                " 'to bottom right', 'to top right' or 'ellipse at center'" };
    }
    returner = '<?xml version="1.0" ?>' +
        '<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="100%" height="100%" viewBox="0 0 1 1" preserveAspectRatio="none">' +
        '<' + gradientType + 'Gradient id="gradient" gradientUnits="userSpaceOnUse" ' + gradientDirectionSvg + '>';

    for (i = 0; i < stops.length; i+= 1) {
        if (stops[i] instanceof Expression) {
            color = stops[i].value[0];
            position = stops[i].value[1];
        } else {
            color = stops[i];
            position = undefined;
        }

        if (!(color instanceof Color) || (!((i === 0 || i + 1 === stops.length) && position === undefined) && !(position instanceof Dimension))) {
            throwArgumentDescriptor();
        }
        positionValue = position ? position.toCSS(renderEnv) : i === 0 ? "0%" : "100%";
        alpha = color.alpha;
        returner += '<stop offset="' + positionValue + '" stop-color="' + color.toRGB() + '"' + (alpha < 1 ? ' stop-opacity="' + alpha + '"' : '') + '/>';
    }
    returner += '</' + gradientType + 'Gradient>' +
        '<rect ' + rectangleDimension + ' fill="url(#gradient)" /></svg>';

    returner = encodeURIComponent(returner);

    returner = "data:image/svg+xml," + returner;
    return new URL(new Quoted("'" + returner + "'", returner, false, this.index, this.currentFileInfo), this.index, this.currentFileInfo);
});

};

},{“../tree/color”:50,“../tree/dimension”:56,“../tree/expression”:59,“../tree/quoted”:73,“../tree/url”:80,“./function-registry”:22}],29:[function(require,module,exports){ var Keyword = require(“../tree/keyword”),

DetachedRuleset = require("../tree/detached-ruleset"),
Dimension = require("../tree/dimension"),
Color = require("../tree/color"),
Quoted = require("../tree/quoted"),
Anonymous = require("../tree/anonymous"),
URL = require("../tree/url"),
Operation = require("../tree/operation"),
functionRegistry = require("./function-registry");

var isa = function (n, Type) {

    return (n instanceof Type) ? Keyword.True : Keyword.False;
},
isunit = function (n, unit) {
    if (unit === undefined) {
        throw { type: "Argument", message: "missing the required second argument to isunit." };
    }
    unit = typeof unit.value === "string" ? unit.value : unit;
    if (typeof unit !== "string") {
        throw { type: "Argument", message: "Second argument to isunit should be a unit or a string." };
    }
    return (n instanceof Dimension) && n.unit.is(unit) ? Keyword.True : Keyword.False;
},
getItemsFromNode = function(node) {
    // handle non-array values as an array of length 1
    // return 'undefined' if index is invalid
    var items = Array.isArray(node.value) ?
        node.value : Array(node);

    return items;
};

functionRegistry.addMultiple({

isruleset: function (n) {
    return isa(n, DetachedRuleset);
},
iscolor: function (n) {
    return isa(n, Color);
},
isnumber: function (n) {
    return isa(n, Dimension);
},
isstring: function (n) {
    return isa(n, Quoted);
},
iskeyword: function (n) {
    return isa(n, Keyword);
},
isurl: function (n) {
    return isa(n, URL);
},
ispixel: function (n) {
    return isunit(n, 'px');
},
ispercentage: function (n) {
    return isunit(n, '%');
},
isem: function (n) {
    return isunit(n, 'em');
},
isunit: isunit,
unit: function (val, unit) {
    if (!(val instanceof Dimension)) {
        throw { type: "Argument",
            message: "the first argument to unit must be a number" +
                (val instanceof Operation ? ". Have you forgotten parenthesis?" : "") };
    }
    if (unit) {
        if (unit instanceof Keyword) {
            unit = unit.value;
        } else {
            unit = unit.toCSS();
        }
    } else {
        unit = "";
    }
    return new Dimension(val.value, unit);
},
"get-unit": function (n) {
    return new Anonymous(n.unit);
},
extract: function(values, index) {
    index = index.value - 1; // (1-based index)

    return getItemsFromNode(values)[index];
},
length: function(values) {
    return new Dimension(getItemsFromNode(values).length);
}

});

},{“../tree/anonymous”:46,“../tree/color”:50,“../tree/detached-ruleset”:55,“../tree/dimension”:56,“../tree/keyword”:65,“../tree/operation”:71,“../tree/quoted”:73,“../tree/url”:80,“./function-registry”:22}],30:[function(require,module,exports){ var contexts = require(“./contexts”),

Parser = require('./parser/parser'),
FunctionImporter = require('./plugins/function-importer');

module.exports = function(environment) {

// FileInfo = {
//  'relativeUrls' - option - whether to adjust URL's to be relative
//  'filename' - full resolved filename of current file
//  'rootpath' - path to append to normal URLs for this node
//  'currentDirectory' - path to the current file, absolute
//  'rootFilename' - filename of the base file
//  'entryPath' - absolute path to the entry file
//  'reference' - whether the file should not be output and only output parts that are referenced

var ImportManager = function(context, rootFileInfo) {
    this.rootFilename = rootFileInfo.filename;
    this.paths = context.paths || [];  // Search paths, when importing
    this.contents = {};             // map - filename to contents of all the files
    this.contentsIgnoredChars = {}; // map - filename to lines at the beginning of each file to ignore
    this.mime = context.mime;
    this.error = null;
    this.context = context;
    // Deprecated? Unused outside of here, could be useful.
    this.queue = [];        // Files which haven't been imported yet
    this.files = {};        // Holds the imported parse trees.
};
/**
 * Add an import to be imported
 * @param path - the raw path
 * @param tryAppendLessExtension - whether to try appending the less extension (if the path has no extension)
 * @param currentFileInfo - the current file info (used for instance to work out relative paths)
 * @param importOptions - import options
 * @param callback - callback for when it is imported
 */
ImportManager.prototype.push = function (path, tryAppendLessExtension, currentFileInfo, importOptions, callback) {
    var importManager = this;
    this.queue.push(path);

    var fileParsedFunc = function (e, root, fullPath) {
        importManager.queue.splice(importManager.queue.indexOf(path), 1); // Remove the path from the queue

        var importedEqualsRoot = fullPath === importManager.rootFilename;
        if (importOptions.optional && e) {
            callback(null, {rules:[]}, false, null);
        }
        else {
            importManager.files[fullPath] = root;
            if (e && !importManager.error) { importManager.error = e; }
            callback(e, root, importedEqualsRoot, fullPath);
        }
    };

    var newFileInfo = {
        relativeUrls: this.context.relativeUrls,
        entryPath: currentFileInfo.entryPath,
        rootpath: currentFileInfo.rootpath,
        rootFilename: currentFileInfo.rootFilename
    };

    var fileManager = environment.getFileManager(path, currentFileInfo.currentDirectory, this.context, environment);

    if (!fileManager) {
        fileParsedFunc({ message: "Could not find a file-manager for " + path });
        return;
    }

    if (tryAppendLessExtension) {
        path = fileManager.tryAppendExtension(path, importOptions.plugin ? ".js" : ".less");
    }

    var loadFileCallback = function(loadedFile) {
        var resolvedFilename = loadedFile.filename,
            contents = loadedFile.contents.replace(/^\uFEFF/, '');

        // Pass on an updated rootpath if path of imported file is relative and file
        // is in a (sub|sup) directory
        //
        // Examples:
        // - If path of imported file is 'module/nav/nav.less' and rootpath is 'less/',
        //   then rootpath should become 'less/module/nav/'
        // - If path of imported file is '../mixins.less' and rootpath is 'less/',
        //   then rootpath should become 'less/../'
        newFileInfo.currentDirectory = fileManager.getPath(resolvedFilename);
        if (newFileInfo.relativeUrls) {
            newFileInfo.rootpath = fileManager.join(
                (importManager.context.rootpath || ""),
                fileManager.pathDiff(newFileInfo.currentDirectory, newFileInfo.entryPath));

            if (!fileManager.isPathAbsolute(newFileInfo.rootpath) && fileManager.alwaysMakePathsAbsolute()) {
                newFileInfo.rootpath = fileManager.join(newFileInfo.entryPath, newFileInfo.rootpath);
            }
        }
        newFileInfo.filename = resolvedFilename;

        var newEnv = new contexts.Parse(importManager.context);

        newEnv.processImports = false;
        importManager.contents[resolvedFilename] = contents;

        if (currentFileInfo.reference || importOptions.reference) {
            newFileInfo.reference = true;
        }

        if (importOptions.plugin) {
            new FunctionImporter(newEnv, newFileInfo).eval(contents, function (e, root) {
                fileParsedFunc(e, root, resolvedFilename);
            });
        } else if (importOptions.inline) {
            fileParsedFunc(null, contents, resolvedFilename);
        } else {
            new Parser(newEnv, importManager, newFileInfo).parse(contents, function (e, root) {
                fileParsedFunc(e, root, resolvedFilename);
            });
        }
    };

    var promise = fileManager.loadFile(path, currentFileInfo.currentDirectory, this.context, environment,
        function(err, loadedFile) {
        if (err) {
            fileParsedFunc(err);
        } else {
            loadFileCallback(loadedFile);
        }
    });
    if (promise) {
        promise.then(loadFileCallback, fileParsedFunc);
    }
};
return ImportManager;

};

},{“./contexts”:11,“./parser/parser”:38,“./plugins/function-importer”:40}],31:[function(require,module,exports){ module.exports = function(environment, fileManagers) {

var SourceMapOutput, SourceMapBuilder, ParseTree, ImportManager, Environment;

var less = {
    version: [2, 6, 0],
    data: require('./data'),
    tree: require('./tree'),
    Environment: (Environment = require("./environment/environment")),
    AbstractFileManager: require("./environment/abstract-file-manager"),
    environment: (environment = new Environment(environment, fileManagers)),
    visitors: require('./visitors'),
    Parser: require('./parser/parser'),
    functions: require('./functions')(environment),
    contexts: require("./contexts"),
    SourceMapOutput: (SourceMapOutput = require('./source-map-output')(environment)),
    SourceMapBuilder: (SourceMapBuilder = require('./source-map-builder')(SourceMapOutput, environment)),
    ParseTree: (ParseTree = require('./parse-tree')(SourceMapBuilder)),
    ImportManager: (ImportManager = require('./import-manager')(environment)),
    render: require("./render")(environment, ParseTree, ImportManager),
    parse: require("./parse")(environment, ParseTree, ImportManager),
    LessError: require('./less-error'),
    transformTree: require('./transform-tree'),
    utils: require('./utils'),
    PluginManager: require('./plugin-manager'),
    logger: require('./logger')
};

return less;

};

},{“./contexts”:11,“./data”:13,“./environment/abstract-file-manager”:15,“./environment/environment”:16,“./functions”:23,“./import-manager”:30,“./less-error”:32,“./logger”:33,“./parse”:35,“./parse-tree”:34,“./parser/parser”:38,“./plugin-manager”:39,“./render”:41,“./source-map-builder”:42,“./source-map-output”:43,“./transform-tree”:44,“./tree”:62,“./utils”:83,“./visitors”:87}],32:[function(require,module,exports){ var utils = require(“./utils”);

var LessError = module.exports = function LessError(e, importManager, currentFilename) {

Error.call(this);

var filename = e.filename || currentFilename;

if (importManager && filename) {
    var input = importManager.contents[filename],
        loc = utils.getLocation(e.index, input),
        line = loc.line,
        col  = loc.column,
        callLine = e.call && utils.getLocation(e.call, input).line,
        lines = input.split('\n');

    this.type = e.type || 'Syntax';
    this.filename = filename;
    this.index = e.index;
    this.line = typeof line === 'number' ? line + 1 : null;
    this.callLine = callLine + 1;
    this.callExtract = lines[callLine];
    this.column = col;
    this.extract = [
        lines[line - 1],
        lines[line],
        lines[line + 1]
    ];
}
this.message = e.message;
this.stack = e.stack;

};

if (typeof Object.create === 'undefined') {

var F = function () {};
F.prototype = Error.prototype;
LessError.prototype = new F();

} else {

LessError.prototype = Object.create(Error.prototype);

}

LessError.prototype.constructor = LessError;

},{“./utils”:83}],33:[function(require,module,exports){ module.exports = {

error: function(msg) {
    this._fireEvent("error", msg);
},
warn: function(msg) {
    this._fireEvent("warn", msg);
},
info: function(msg) {
    this._fireEvent("info", msg);
},
debug: function(msg) {
    this._fireEvent("debug", msg);
},
addListener: function(listener) {
    this._listeners.push(listener);
},
removeListener: function(listener) {
    for (var i = 0; i < this._listeners.length; i++) {
        if (this._listeners[i] === listener) {
            this._listeners.splice(i, 1);
            return;
        }
    }
},
_fireEvent: function(type, msg) {
    for (var i = 0; i < this._listeners.length; i++) {
        var logFunction = this._listeners[i][type];
        if (logFunction) {
            logFunction(msg);
        }
    }
},
_listeners: []

};

},{}],34:[function(require,module,exports){ var LessError = require('./less-error'),

transformTree = require("./transform-tree"),
logger = require("./logger");

module.exports = function(SourceMapBuilder) {

var ParseTree = function(root, imports) {
    this.root = root;
    this.imports = imports;
};

ParseTree.prototype.toCSS = function(options) {
    var evaldRoot, result = {}, sourceMapBuilder;
    try {
        evaldRoot = transformTree(this.root, options);
    } catch (e) {
        throw new LessError(e, this.imports);
    }

    try {
        var compress = Boolean(options.compress);
        if (compress) {
            logger.warn("The compress option has been deprecated. We recommend you use a dedicated css minifier, for instance see less-plugin-clean-css.");
        }

        var toCSSOptions = {
            compress: compress,
            dumpLineNumbers: options.dumpLineNumbers,
            strictUnits: Boolean(options.strictUnits),
            numPrecision: 8};

        if (options.sourceMap) {
            sourceMapBuilder = new SourceMapBuilder(options.sourceMap);
            result.css = sourceMapBuilder.toCSS(evaldRoot, toCSSOptions, this.imports);
        } else {
            result.css = evaldRoot.toCSS(toCSSOptions);
        }
    } catch (e) {
        throw new LessError(e, this.imports);
    }

    if (options.pluginManager) {
        var postProcessors = options.pluginManager.getPostProcessors();
        for (var i = 0; i < postProcessors.length; i++) {
            result.css = postProcessors[i].process(result.css, { sourceMap: sourceMapBuilder, options: options, imports: this.imports });
        }
    }
    if (options.sourceMap) {
        result.map = sourceMapBuilder.getExternalSourceMap();
    }

    result.imports = [];
    for (var file in this.imports.files) {
        if (this.imports.files.hasOwnProperty(file) && file !== this.imports.rootFilename) {
            result.imports.push(file);
        }
    }
    return result;
};
return ParseTree;

};

},{“./less-error”:32,“./logger”:33,“./transform-tree”:44}],35:[function(require,module,exports){ var PromiseConstructor,

contexts = require("./contexts"),
Parser = require('./parser/parser'),
PluginManager = require('./plugin-manager');

module.exports = function(environment, ParseTree, ImportManager) {

var parse = function (input, options, callback) {
    options = options || {};

    if (typeof options === 'function') {
        callback = options;
        options = {};
    }

    if (!callback) {
        if (!PromiseConstructor) {
            PromiseConstructor = typeof Promise === 'undefined' ? require('promise') : Promise;
        }
        var self = this;
        return new PromiseConstructor(function (resolve, reject) {
            parse.call(self, input, options, function(err, output) {
                if (err) {
                    reject(err);
                } else {
                    resolve(output);
                }
            });
        });
    } else {
        var context,
            rootFileInfo,
            pluginManager = new PluginManager(this);

        pluginManager.addPlugins(options.plugins);
        options.pluginManager = pluginManager;

        context = new contexts.Parse(options);

        if (options.rootFileInfo) {
            rootFileInfo = options.rootFileInfo;
        } else {
            var filename = options.filename || "input";
            var entryPath = filename.replace(/[^\/\\]*$/, "");
            rootFileInfo = {
                filename: filename,
                relativeUrls: context.relativeUrls,
                rootpath: context.rootpath || "",
                currentDirectory: entryPath,
                entryPath: entryPath,
                rootFilename: filename
            };
            // add in a missing trailing slash
            if (rootFileInfo.rootpath && rootFileInfo.rootpath.slice(-1) !== "/") {
                rootFileInfo.rootpath += "/";
            }
        }

        var imports = new ImportManager(context, rootFileInfo);

        new Parser(context, imports, rootFileInfo)
            .parse(input, function (e, root) {
            if (e) { return callback(e); }
            callback(null, root, imports, options);
        }, options);
    }
};
return parse;

};

},{“./contexts”:11,“./parser/parser”:38,“./plugin-manager”:39,“promise”:undefined}],36:[function(require,module,exports){ // Split the input into chunks. module.exports = function (input, fail) {

var len = input.length, level = 0, parenLevel = 0,
    lastOpening, lastOpeningParen, lastMultiComment, lastMultiCommentEndBrace,
    chunks = [], emitFrom = 0,
    chunkerCurrentIndex, currentChunkStartIndex, cc, cc2, matched;

function emitChunk(force) {
    var len = chunkerCurrentIndex - emitFrom;
    if (((len < 512) && !force) || !len) {
        return;
    }
    chunks.push(input.slice(emitFrom, chunkerCurrentIndex + 1));
    emitFrom = chunkerCurrentIndex + 1;
}

for (chunkerCurrentIndex = 0; chunkerCurrentIndex < len; chunkerCurrentIndex++) {
    cc = input.charCodeAt(chunkerCurrentIndex);
    if (((cc >= 97) && (cc <= 122)) || (cc < 34)) {
        // a-z or whitespace
        continue;
    }

    switch (cc) {
        case 40:                        // (
            parenLevel++;
            lastOpeningParen = chunkerCurrentIndex;
            continue;
        case 41:                        // )
            if (--parenLevel < 0) {
                return fail("missing opening `(`", chunkerCurrentIndex);
            }
            continue;
        case 59:                        // ;
            if (!parenLevel) { emitChunk(); }
            continue;
        case 123:                       // {
            level++;
            lastOpening = chunkerCurrentIndex;
            continue;
        case 125:                       // }
            if (--level < 0) {
                return fail("missing opening `{`", chunkerCurrentIndex);
            }
            if (!level && !parenLevel) { emitChunk(); }
            continue;
        case 92:                        // \
            if (chunkerCurrentIndex < len - 1) { chunkerCurrentIndex++; continue; }
            return fail("unescaped `\\`", chunkerCurrentIndex);
        case 34:
        case 39:
        case 96:                        // ", ' and `
            matched = 0;
            currentChunkStartIndex = chunkerCurrentIndex;
            for (chunkerCurrentIndex = chunkerCurrentIndex + 1; chunkerCurrentIndex < len; chunkerCurrentIndex++) {
                cc2 = input.charCodeAt(chunkerCurrentIndex);
                if (cc2 > 96) { continue; }
                if (cc2 == cc) { matched = 1; break; }
                if (cc2 == 92) {        // \
                    if (chunkerCurrentIndex == len - 1) {
                        return fail("unescaped `\\`", chunkerCurrentIndex);
                    }
                    chunkerCurrentIndex++;
                }
            }
            if (matched) { continue; }
            return fail("unmatched `" + String.fromCharCode(cc) + "`", currentChunkStartIndex);
        case 47:                        // /, check for comment
            if (parenLevel || (chunkerCurrentIndex == len - 1)) { continue; }
            cc2 = input.charCodeAt(chunkerCurrentIndex + 1);
            if (cc2 == 47) {
                // //, find lnfeed
                for (chunkerCurrentIndex = chunkerCurrentIndex + 2; chunkerCurrentIndex < len; chunkerCurrentIndex++) {
                    cc2 = input.charCodeAt(chunkerCurrentIndex);
                    if ((cc2 <= 13) && ((cc2 == 10) || (cc2 == 13))) { break; }
                }
            } else if (cc2 == 42) {
                // /*, find */
                lastMultiComment = currentChunkStartIndex = chunkerCurrentIndex;
                for (chunkerCurrentIndex = chunkerCurrentIndex + 2; chunkerCurrentIndex < len - 1; chunkerCurrentIndex++) {
                    cc2 = input.charCodeAt(chunkerCurrentIndex);
                    if (cc2 == 125) { lastMultiCommentEndBrace = chunkerCurrentIndex; }
                    if (cc2 != 42) { continue; }
                    if (input.charCodeAt(chunkerCurrentIndex + 1) == 47) { break; }
                }
                if (chunkerCurrentIndex == len - 1) {
                    return fail("missing closing `*/`", currentChunkStartIndex);
                }
                chunkerCurrentIndex++;
            }
            continue;
        case 42:                       // *, check for unmatched */
            if ((chunkerCurrentIndex < len - 1) && (input.charCodeAt(chunkerCurrentIndex + 1) == 47)) {
                return fail("unmatched `/*`", chunkerCurrentIndex);
            }
            continue;
    }
}

if (level !== 0) {
    if ((lastMultiComment > lastOpening) && (lastMultiCommentEndBrace > lastMultiComment)) {
        return fail("missing closing `}` or `*/`", lastOpening);
    } else {
        return fail("missing closing `}`", lastOpening);
    }
} else if (parenLevel !== 0) {
    return fail("missing closing `)`", lastOpeningParen);
}

emitChunk(true);
return chunks;

};

},{}],37:[function(require,module,exports){ var chunker = require('./chunker');

module.exports = function() {

var input,       // LeSS input string
    j,           // current chunk
    saveStack = [],   // holds state for backtracking
    furthest,    // furthest index the parser has gone to
    furthestPossibleErrorMessage,// if this is furthest we got to, this is the probably cause
    chunks,      // chunkified input
    current,     // current chunk
    currentPos,  // index of current chunk, in `input`
    parserInput = {};

parserInput.save = function() {
    currentPos = parserInput.i;
    saveStack.push( { current: current, i: parserInput.i, j: j });
};
parserInput.restore = function(possibleErrorMessage) {

    if (parserInput.i > furthest || (parserInput.i === furthest && possibleErrorMessage && !furthestPossibleErrorMessage)) {
        furthest = parserInput.i;
        furthestPossibleErrorMessage = possibleErrorMessage;
    }
    var state = saveStack.pop();
    current = state.current;
    currentPos = parserInput.i = state.i;
    j = state.j;
};
parserInput.forget = function() {
    saveStack.pop();
};
parserInput.isWhitespace = function (offset) {
    var pos = parserInput.i + (offset || 0),
        code = input.charCodeAt(pos);
    return (code === CHARCODE_SPACE || code === CHARCODE_CR || code === CHARCODE_TAB || code === CHARCODE_LF);
};

// Specialization of $(tok)
parserInput.$re = function(tok) {
    if (parserInput.i > currentPos) {
        current = current.slice(parserInput.i - currentPos);
        currentPos = parserInput.i;
    }

    var m = tok.exec(current);
    if (!m) {
        return null;
    }

    skipWhitespace(m[0].length);
    if (typeof m === "string") {
        return m;
    }

    return m.length === 1 ? m[0] : m;
};

parserInput.$char = function(tok) {
    if (input.charAt(parserInput.i) !== tok) {
        return null;
    }
    skipWhitespace(1);
    return tok;
};

parserInput.$str = function(tok) {
    var tokLength = tok.length;

    // https://jsperf.com/string-startswith/21
    for (var i = 0; i < tokLength; i++) {
        if (input.charAt(parserInput.i + i) !== tok.charAt(i)) {
            return null;
        }
    }

    skipWhitespace(tokLength);
    return tok;
};

parserInput.$quoted = function() {

    var startChar = input.charAt(parserInput.i);
    if (startChar !== "'" && startChar !== '"') {
        return;
    }
    var length = input.length,
        currentPosition = parserInput.i;

    for (var i = 1; i + currentPosition < length; i++) {
        var nextChar = input.charAt(i + currentPosition);
        switch(nextChar) {
            case "\\":
                i++;
                continue;
            case "\r":
            case "\n":
                break;
            case startChar:
                var str = input.substr(currentPosition, i + 1);
                skipWhitespace(i + 1);
                return str;
            default:
        }
    }
    return null;
};

var CHARCODE_SPACE = 32,
    CHARCODE_TAB = 9,
    CHARCODE_LF = 10,
    CHARCODE_CR = 13,
    CHARCODE_PLUS = 43,
    CHARCODE_COMMA = 44,
    CHARCODE_FORWARD_SLASH = 47,
    CHARCODE_9 = 57;

parserInput.autoCommentAbsorb = true;
parserInput.commentStore = [];
parserInput.finished = false;

var skipWhitespace = function(length) {
    var oldi = parserInput.i, oldj = j,
        curr = parserInput.i - currentPos,
        endIndex = parserInput.i + current.length - curr,
        mem = (parserInput.i += length),
        inp = input,
        c, nextChar, comment;

    for (; parserInput.i < endIndex; parserInput.i++) {
        c = inp.charCodeAt(parserInput.i);

        if (parserInput.autoCommentAbsorb && c === CHARCODE_FORWARD_SLASH) {
            nextChar = inp.charAt(parserInput.i + 1);
            if (nextChar === '/') {
                comment = {index: parserInput.i, isLineComment: true};
                var nextNewLine = inp.indexOf("\n", parserInput.i + 2);
                if (nextNewLine < 0) {
                    nextNewLine = endIndex;
                }
                parserInput.i = nextNewLine;
                comment.text = inp.substr(comment.i, parserInput.i - comment.i);
                parserInput.commentStore.push(comment);
                continue;
            } else if (nextChar === '*') {
                var nextStarSlash = inp.indexOf("*/", parserInput.i + 2);
                if (nextStarSlash >= 0) {
                    comment = {
                        index: parserInput.i,
                        text: inp.substr(parserInput.i, nextStarSlash + 2 - parserInput.i),
                        isLineComment: false
                    };
                    parserInput.i += comment.text.length - 1;
                    parserInput.commentStore.push(comment);
                    continue;
                }
            }
            break;
        }

        if ((c !== CHARCODE_SPACE) && (c !== CHARCODE_LF) && (c !== CHARCODE_TAB) && (c !== CHARCODE_CR)) {
            break;
        }
    }

    current = current.slice(length + parserInput.i - mem + curr);
    currentPos = parserInput.i;

    if (!current.length) {
        if (j < chunks.length - 1) {
            current = chunks[++j];
            skipWhitespace(0); // skip space at the beginning of a chunk
            return true; // things changed
        }
        parserInput.finished = true;
    }

    return oldi !== parserInput.i || oldj !== j;
};

// Same as $(), but don't change the state of the parser,
// just return the match.
parserInput.peek = function(tok) {
    if (typeof tok === 'string') {
        // https://jsperf.com/string-startswith/21
        for (var i = 0; i < tok.length; i++) {
            if (input.charAt(parserInput.i + i) !== tok.charAt(i)) {
                return false;
            }
        }
        return true;
    } else {
        return tok.test(current);
    }
};

// Specialization of peek()
// TODO remove or change some currentChar calls to peekChar
parserInput.peekChar = function(tok) {
    return input.charAt(parserInput.i) === tok;
};

parserInput.currentChar = function() {
    return input.charAt(parserInput.i);
};

parserInput.getInput = function() {
    return input;
};

parserInput.peekNotNumeric = function() {
    var c = input.charCodeAt(parserInput.i);
    //Is the first char of the dimension 0-9, '.', '+' or '-'
    return (c > CHARCODE_9 || c < CHARCODE_PLUS) || c === CHARCODE_FORWARD_SLASH || c === CHARCODE_COMMA;
};

parserInput.start = function(str, chunkInput, failFunction) {
    input = str;
    parserInput.i = j = currentPos = furthest = 0;

    // chunking apparantly makes things quicker (but my tests indicate
    // it might actually make things slower in node at least)
    // and it is a non-perfect parse - it can't recognise
    // unquoted urls, meaning it can't distinguish comments
    // meaning comments with quotes or {}() in them get 'counted'
    // and then lead to parse errors.
    // In addition if the chunking chunks in the wrong place we might
    // not be able to parse a parser statement in one go
    // this is officially deprecated but can be switched on via an option
    // in the case it causes too much performance issues.
    if (chunkInput) {
        chunks = chunker(str, failFunction);
    } else {
        chunks = [str];
    }

    current = chunks[0];

    skipWhitespace(0);
};

parserInput.end = function() {
    var message,
        isFinished = parserInput.i >= input.length;

    if (parserInput.i < furthest) {
        message = furthestPossibleErrorMessage;
        parserInput.i = furthest;
    }
    return {
        isFinished: isFinished,
        furthest: parserInput.i,
        furthestPossibleErrorMessage: message,
        furthestReachedEnd: parserInput.i >= input.length - 1,
        furthestChar: input[parserInput.i]
    };
};

return parserInput;

};

},{“./chunker”:36}],38:[function(require,module,exports){ var LessError = require('../less-error'),

tree = require("../tree"),
visitors = require("../visitors"),
getParserInput = require("./parser-input"),
utils = require("../utils");

// // less.js - parser // // A relatively straight-forward predictive parser. // There is no tokenization/lexing stage, the input is parsed // in one sweep. // // To make the parser fast enough to run in the browser, several // optimization had to be made: // // - Matching and slicing on a huge input is often cause of slowdowns. // The solution is to chunkify the input into smaller strings. // The chunks are stored in the `chunks` var, // `j` holds the current chunk index, and `currentPos` holds // the index of the current chunk in relation to `input`. // This gives us an almost 4x speed-up. // // - In many cases, we don't need to match individual tokens; // for example, if a value doesn't hold any variables, operations // or dynamic references, the parser can effectively 'skip' it, // treating it as a literal. // An example would be '1px solid #000' - which evaluates to itself, // we don't need to know what the individual components are. // The drawback, of course is that you don't get the benefits of // syntax-checking on the CSS. This gives us a 50% speed-up in the parser, // and a smaller speed-up in the code-gen. // // // Token matching is done with the `$` function, which either takes // a terminal string or regexp, or a non-terminal function to call. // It also takes care of moving all the indices forwards. //` // var Parser = function Parser(context, imports, fileInfo) {

var parsers,
    parserInput = getParserInput();

function expect(arg, msg, index) {
    // some older browsers return typeof 'function' for RegExp
    var result = (Object.prototype.toString.call(arg) === '[object Function]') ? arg.call(parsers) : parserInput.$re(arg);
    if (result) {
        return result;
    }
    error(msg || (typeof arg === 'string' ? "expected '" + arg + "' got '" + parserInput.currentChar() + "'"
                                           : "unexpected token"));
}

// Specialization of expect()
function expectChar(arg, msg) {
    if (parserInput.$char(arg)) {
        return arg;
    }
    error(msg || "expected '" + arg + "' got '" + parserInput.currentChar() + "'");
}

function error(msg, type) {
    throw new LessError(
        {
            index: parserInput.i,
            filename: fileInfo.filename,
            type: type || 'Syntax',
            message: msg
        },
        imports
    );
}

function getDebugInfo(index) {
    var filename = fileInfo.filename;

    return {
        lineNumber: utils.getLocation(index, parserInput.getInput()).line + 1,
        fileName: filename
    };
}

//
// The Parser
//
return {

    //
    // Parse an input string into an abstract syntax tree,
    // @param str A string containing 'less' markup
    // @param callback call `callback` when done.
    // @param [additionalData] An optional map which can contains vars - a map (key, value) of variables to apply
    //
    parse: function (str, callback, additionalData) {
        var root, error = null, globalVars, modifyVars, ignored, preText = "";

        globalVars = (additionalData && additionalData.globalVars) ? Parser.serializeVars(additionalData.globalVars) + '\n' : '';
        modifyVars = (additionalData && additionalData.modifyVars) ? '\n' + Parser.serializeVars(additionalData.modifyVars) : '';

        if (context.pluginManager) {
            var preProcessors = context.pluginManager.getPreProcessors();
            for (var i = 0; i < preProcessors.length; i++) {
                str = preProcessors[i].process(str, { context: context, imports: imports, fileInfo: fileInfo });
            }
        }

        if (globalVars || (additionalData && additionalData.banner)) {
            preText = ((additionalData && additionalData.banner) ? additionalData.banner : "") + globalVars;
            ignored = imports.contentsIgnoredChars;
            ignored[fileInfo.filename] = ignored[fileInfo.filename] || 0;
            ignored[fileInfo.filename] += preText.length;
        }

        str = str.replace(/\r\n?/g, '\n');
        // Remove potential UTF Byte Order Mark
        str = preText + str.replace(/^\uFEFF/, '') + modifyVars;
        imports.contents[fileInfo.filename] = str;

        // Start with the primary rule.
        // The whole syntax tree is held under a Ruleset node,
        // with the `root` property set to true, so no `{}` are
        // output. The callback is called when the input is parsed.
        try {
            parserInput.start(str, context.chunkInput, function fail(msg, index) {
                throw new LessError({
                    index: index,
                    type: 'Parse',
                    message: msg,
                    filename: fileInfo.filename
                }, imports);
            });

            root = new(tree.Ruleset)(null, this.parsers.primary());
            root.root = true;
            root.firstRoot = true;
        } catch (e) {
            return callback(new LessError(e, imports, fileInfo.filename));
        }

        // If `i` is smaller than the `input.length - 1`,
        // it means the parser wasn't able to parse the whole
        // string, so we've got a parsing error.
        //
        // We try to extract a \n delimited string,
        // showing the line where the parse error occurred.
        // We split it up into two parts (the part which parsed,
        // and the part which didn't), so we can color them differently.
        var endInfo = parserInput.end();
        if (!endInfo.isFinished) {

            var message = endInfo.furthestPossibleErrorMessage;

            if (!message) {
                message = "Unrecognised input";
                if (endInfo.furthestChar === '}') {
                    message += ". Possibly missing opening '{'";
                } else if (endInfo.furthestChar === ')') {
                    message += ". Possibly missing opening '('";
                } else if (endInfo.furthestReachedEnd) {
                    message += ". Possibly missing something";
                }
            }

            error = new LessError({
                type: "Parse",
                message: message,
                index: endInfo.furthest,
                filename: fileInfo.filename
            }, imports);
        }

        var finish = function (e) {
            e = error || e || imports.error;

            if (e) {
                if (!(e instanceof LessError)) {
                    e = new LessError(e, imports, fileInfo.filename);
                }

                return callback(e);
            }
            else {
                return callback(null, root);
            }
        };

        if (context.processImports !== false) {
            new visitors.ImportVisitor(imports, finish)
                .run(root);
        } else {
            return finish();
        }
    },

    //
    // Here in, the parsing rules/functions
    //
    // The basic structure of the syntax tree generated is as follows:
    //
    //   Ruleset ->  Rule -> Value -> Expression -> Entity
    //
    // Here's some Less code:
    //
    //    .class {
    //      color: #fff;
    //      border: 1px solid #000;
    //      width: @w + 4px;
    //      > .child {...}
    //    }
    //
    // And here's what the parse tree might look like:
    //
    //     Ruleset (Selector '.class', [
    //         Rule ("color",  Value ([Expression [Color #fff]]))
    //         Rule ("border", Value ([Expression [Dimension 1px][Keyword "solid"][Color #000]]))
    //         Rule ("width",  Value ([Expression [Operation " + " [Variable "@w"][Dimension 4px]]]))
    //         Ruleset (Selector [Element '>', '.child'], [...])
    //     ])
    //
    //  In general, most rules will try to parse a token with the `$re()` function, and if the return
    //  value is truly, will return a new node, of the relevant type. Sometimes, we need to check
    //  first, before parsing, that's when we use `peek()`.
    //
    parsers: parsers = {
        //
        // The `primary` rule is the *entry* and *exit* point of the parser.
        // The rules here can appear at any level of the parse tree.
        //
        // The recursive nature of the grammar is an interplay between the `block`
        // rule, which represents `{ ... }`, the `ruleset` rule, and this `primary` rule,
        // as represented by this simplified grammar:
        //
        //     primary  →  (ruleset | rule)+
        //     ruleset  →  selector+ block
        //     block    →  '{' primary '}'
        //
        // Only at one point is the primary rule not called from the
        // block rule: at the root level.
        //
        primary: function () {
            var mixin = this.mixin, root = [], node;

            while (true) {
                while (true) {
                    node = this.comment();
                    if (!node) { break; }
                    root.push(node);
                }
                // always process comments before deciding if finished
                if (parserInput.finished) {
                    break;
                }
                if (parserInput.peek('}')) {
                    break;
                }

                node = this.extendRule();
                if (node) {
                    root = root.concat(node);
                    continue;
                }

                node = mixin.definition() || this.rule() || this.ruleset() ||
                    mixin.call() || this.rulesetCall() || this.directive();
                if (node) {
                    root.push(node);
                } else {
                    var foundSemiColon = false;
                    while (parserInput.$char(";")) {
                        foundSemiColon = true;
                    }
                    if (!foundSemiColon) {
                        break;
                    }
                }
            }

            return root;
        },

        // comments are collected by the main parsing mechanism and then assigned to nodes
        // where the current structure allows it
        comment: function () {
            if (parserInput.commentStore.length) {
                var comment = parserInput.commentStore.shift();
                return new(tree.Comment)(comment.text, comment.isLineComment, comment.index, fileInfo);
            }
        },

        //
        // Entities are tokens which can be found inside an Expression
        //
        entities: {
            //
            // A string, which supports escaping " and '
            //
            //     "milky way" 'he\'s the one!'
            //
            quoted: function () {
                var str, index = parserInput.i, isEscaped = false;

                parserInput.save();
                if (parserInput.$char("~")) {
                    isEscaped = true;
                }
                str = parserInput.$quoted();
                if (!str) {
                    parserInput.restore();
                    return;
                }
                parserInput.forget();

                return new(tree.Quoted)(str.charAt(0), str.substr(1, str.length - 2), isEscaped, index, fileInfo);
            },

            //
            // A catch-all word, such as:
            //
            //     black border-collapse
            //
            keyword: function () {
                var k = parserInput.$char("%") || parserInput.$re(/^[_A-Za-z-][_A-Za-z0-9-]*/);
                if (k) {
                    return tree.Color.fromKeyword(k) || new(tree.Keyword)(k);
                }
            },

            namedColor: function () {
                parserInput.save();
                var autoCommentAbsorb = parserInput.autoCommentAbsorb;
                parserInput.autoCommentAbsorb = false;
                var k = parserInput.$re(/^[_A-Za-z-][_A-Za-z0-9-]*/);
                parserInput.autoCommentAbsorb = autoCommentAbsorb;
                if (!k) {
                    parserInput.forget();
                    return ;
                }
                var result = tree.Color.fromKeyword(k);
                if (!result) {
                    parserInput.restore();
                } else {
                    parserInput.forget();
                    return result;
                }

            },

            //
            // A function call
            //
            //     rgb(255, 0, 255)
            //
            // We also try to catch IE's `alpha()`, but let the `alpha` parser
            // deal with the details.
            //
            // The arguments are parsed with the `entities.arguments` parser.
            //
            call: function () {
                var name, nameLC, args, alpha, index = parserInput.i;

                // http://jsperf.com/case-insensitive-regex-vs-strtolower-then-regex/18
                if (parserInput.peek(/^url\(/i)) {
                    return;
                }

                parserInput.save();

                name = parserInput.$re(/^([\w-]+|%|progid:[\w\.]+)\(/);
                if (!name) { parserInput.forget(); return; }

                name = name[1];
                nameLC = name.toLowerCase();

                if (nameLC === 'alpha') {
                    alpha = parsers.alpha();
                    if (alpha) {
                        parserInput.forget();
                        return alpha;
                    }
                }

                args = this.arguments();

                if (! parserInput.$char(')')) {
                    parserInput.restore("Could not parse call arguments or missing ')'");
                    return;
                }

                parserInput.forget();
                return new(tree.Call)(name, args, index, fileInfo);
            },
            arguments: function () {
                var args = [], arg;

                while (true) {
                    arg = this.assignment() || parsers.expression();
                    if (!arg) {
                        break;
                    }
                    args.push(arg);
                    if (! parserInput.$char(',')) {
                        break;
                    }
                }
                return args;
            },
            literal: function () {
                return this.dimension() ||
                       this.color() ||
                       this.quoted() ||
                       this.unicodeDescriptor();
            },

            // Assignments are argument entities for calls.
            // They are present in ie filter properties as shown below.
            //
            //     filter: progid:DXImageTransform.Microsoft.Alpha( *opacity=50* )
            //

            assignment: function () {
                var key, value;
                parserInput.save();
                key = parserInput.$re(/^\w+(?=\s?=)/i);
                if (!key) {
                    parserInput.restore();
                    return;
                }
                if (!parserInput.$char('=')) {
                    parserInput.restore();
                    return;
                }
                value = parsers.entity();
                if (value) {
                    parserInput.forget();
                    return new(tree.Assignment)(key, value);
                } else {
                    parserInput.restore();
                }
            },

            //
            // Parse url() tokens
            //
            // We use a specific rule for urls, because they don't really behave like
            // standard function calls. The difference is that the argument doesn't have
            // to be enclosed within a string, so it can't be parsed as an Expression.
            //
            url: function () {
                var value, index = parserInput.i;

                parserInput.autoCommentAbsorb = false;

                if (!parserInput.$str("url(")) {
                    parserInput.autoCommentAbsorb = true;
                    return;
                }

                value = this.quoted() || this.variable() ||
                        parserInput.$re(/^(?:(?:\\[\(\)'"])|[^\(\)'"])+/) || "";

                parserInput.autoCommentAbsorb = true;

                expectChar(')');

                return new(tree.URL)((value.value != null || value instanceof tree.Variable) ?
                                    value : new(tree.Anonymous)(value), index, fileInfo);
            },

            //
            // A Variable entity, such as `@fink`, in
            //
            //     width: @fink + 2px
            //
            // We use a different parser for variable definitions,
            // see `parsers.variable`.
            //
            variable: function () {
                var name, index = parserInput.i;

                if (parserInput.currentChar() === '@' && (name = parserInput.$re(/^@@?[\w-]+/))) {
                    return new(tree.Variable)(name, index, fileInfo);
                }
            },

            // A variable entity useing the protective {} e.g. @{var}
            variableCurly: function () {
                var curly, index = parserInput.i;

                if (parserInput.currentChar() === '@' && (curly = parserInput.$re(/^@\{([\w-]+)\}/))) {
                    return new(tree.Variable)("@" + curly[1], index, fileInfo);
                }
            },

            //
            // A Hexadecimal color
            //
            //     #4F3C2F
            //
            // `rgb` and `hsl` colors are parsed through the `entities.call` parser.
            //
            color: function () {
                var rgb;

                if (parserInput.currentChar() === '#' && (rgb = parserInput.$re(/^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})/))) {
                    // strip colons, brackets, whitespaces and other characters that should not
                    // definitely be part of color string
                    var colorCandidateString = rgb.input.match(/^#([\w]+).*/);
                    colorCandidateString = colorCandidateString[1];
                    if (!colorCandidateString.match(/^[A-Fa-f0-9]+$/)) { // verify if candidate consists only of allowed HEX characters
                        error("Invalid HEX color code");
                    }
                    return new(tree.Color)(rgb[1], undefined, '#' + colorCandidateString);
                }

                return this.namedColor();
            },

            //
            // A Dimension, that is, a number and a unit
            //
            //     0.5em 95%
            //
            dimension: function () {
                if (parserInput.peekNotNumeric()) {
                    return;
                }

                var value = parserInput.$re(/^([+-]?\d*\.?\d+)(%|[a-z_]+)?/i);
                if (value) {
                    return new(tree.Dimension)(value[1], value[2]);
                }
            },

            //
            // A unicode descriptor, as is used in unicode-range
            //
            // U+0??  or U+00A1-00A9
            //
            unicodeDescriptor: function () {
                var ud;

                ud = parserInput.$re(/^U\+[0-9a-fA-F?]+(\-[0-9a-fA-F?]+)?/);
                if (ud) {
                    return new(tree.UnicodeDescriptor)(ud[0]);
                }
            },

            //
            // JavaScript code to be evaluated
            //
            //     `window.location.href`
            //
            javascript: function () {
                var js, index = parserInput.i;

                parserInput.save();

                var escape = parserInput.$char("~");
                var jsQuote = parserInput.$char("`");

                if (!jsQuote) {
                    parserInput.restore();
                    return;
                }

                js = parserInput.$re(/^[^`]*`/);
                if (js) {
                    parserInput.forget();
                    return new(tree.JavaScript)(js.substr(0, js.length - 1), Boolean(escape), index, fileInfo);
                }
                parserInput.restore("invalid javascript definition");
            }
        },

        //
        // The variable part of a variable definition. Used in the `rule` parser
        //
        //     @fink:
        //
        variable: function () {
            var name;

            if (parserInput.currentChar() === '@' && (name = parserInput.$re(/^(@[\w-]+)\s*:/))) { return name[1]; }
        },

        //
        // The variable part of a variable definition. Used in the `rule` parser
        //
        //     @fink();
        //
        rulesetCall: function () {
            var name;

            if (parserInput.currentChar() === '@' && (name = parserInput.$re(/^(@[\w-]+)\s*\(\s*\)\s*;/))) {
                return new tree.RulesetCall(name[1]);
            }
        },

        //
        // extend syntax - used to extend selectors
        //
        extend: function(isRule) {
            var elements, e, index = parserInput.i, option, extendList, extend;

            if (!parserInput.$str(isRule ? "&:extend(" : ":extend(")) {
                return;
            }

            do {
                option = null;
                elements = null;
                while (! (option = parserInput.$re(/^(all)(?=\s*(\)|,))/))) {
                    e = this.element();
                    if (!e) {
                        break;
                    }
                    if (elements) {
                        elements.push(e);
                    } else {
                        elements = [ e ];
                    }
                }

                option = option && option[1];
                if (!elements) {
                    error("Missing target selector for :extend().");
                }
                extend = new(tree.Extend)(new(tree.Selector)(elements), option, index, fileInfo);
                if (extendList) {
                    extendList.push(extend);
                } else {
                    extendList = [ extend ];
                }
            } while (parserInput.$char(","));

            expect(/^\)/);

            if (isRule) {
                expect(/^;/);
            }

            return extendList;
        },

        //
        // extendRule - used in a rule to extend all the parent selectors
        //
        extendRule: function() {
            return this.extend(true);
        },

        //
        // Mixins
        //
        mixin: {
            //
            // A Mixin call, with an optional argument list
            //
            //     #mixins > .square(#fff);
            //     .rounded(4px, black);
            //     .button;
            //
            // The `while` loop is there because mixins can be
            // namespaced, but we only support the child and descendant
            // selector for now.
            //
            call: function () {
                var s = parserInput.currentChar(), important = false, index = parserInput.i, elemIndex,
                    elements, elem, e, c, args;

                if (s !== '.' && s !== '#') { return; }

                parserInput.save(); // stop us absorbing part of an invalid selector

                while (true) {
                    elemIndex = parserInput.i;
                    e = parserInput.$re(/^[#.](?:[\w-]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+/);
                    if (!e) {
                        break;
                    }
                    elem = new(tree.Element)(c, e, elemIndex, fileInfo);
                    if (elements) {
                        elements.push(elem);
                    } else {
                        elements = [ elem ];
                    }
                    c = parserInput.$char('>');
                }

                if (elements) {
                    if (parserInput.$char('(')) {
                        args = this.args(true).args;
                        expectChar(')');
                    }

                    if (parsers.important()) {
                        important = true;
                    }

                    if (parsers.end()) {
                        parserInput.forget();
                        return new(tree.mixin.Call)(elements, args, index, fileInfo, important);
                    }
                }

                parserInput.restore();
            },
            args: function (isCall) {
                var entities = parsers.entities,
                    returner = { args:null, variadic: false },
                    expressions = [], argsSemiColon = [], argsComma = [],
                    isSemiColonSeparated, expressionContainsNamed, name, nameLoop,
                    value, arg, expand;

                parserInput.save();

                while (true) {
                    if (isCall) {
                        arg = parsers.detachedRuleset() || parsers.expression();
                    } else {
                        parserInput.commentStore.length = 0;
                        if (parserInput.$str("...")) {
                            returner.variadic = true;
                            if (parserInput.$char(";") && !isSemiColonSeparated) {
                                isSemiColonSeparated = true;
                            }
                            (isSemiColonSeparated ? argsSemiColon : argsComma)
                                .push({ variadic: true });
                            break;
                        }
                        arg = entities.variable() || entities.literal() || entities.keyword();
                    }

                    if (!arg) {
                        break;
                    }

                    nameLoop = null;
                    if (arg.throwAwayComments) {
                        arg.throwAwayComments();
                    }
                    value = arg;
                    var val = null;

                    if (isCall) {
                        // Variable
                        if (arg.value && arg.value.length == 1) {
                            val = arg.value[0];
                        }
                    } else {
                        val = arg;
                    }

                    if (val && val instanceof tree.Variable) {
                        if (parserInput.$char(':')) {
                            if (expressions.length > 0) {
                                if (isSemiColonSeparated) {
                                    error("Cannot mix ; and , as delimiter types");
                                }
                                expressionContainsNamed = true;
                            }

                            value = parsers.detachedRuleset() || parsers.expression();

                            if (!value) {
                                if (isCall) {
                                    error("could not understand value for named argument");
                                } else {
                                    parserInput.restore();
                                    returner.args = [];
                                    return returner;
                                }
                            }
                            nameLoop = (name = val.name);
                        } else if (parserInput.$str("...")) {
                            if (!isCall) {
                                returner.variadic = true;
                                if (parserInput.$char(";") && !isSemiColonSeparated) {
                                    isSemiColonSeparated = true;
                                }
                                (isSemiColonSeparated ? argsSemiColon : argsComma)
                                    .push({ name: arg.name, variadic: true });
                                break;
                            } else {
                                expand = true;
                            }
                        } else if (!isCall) {
                            name = nameLoop = val.name;
                            value = null;
                        }
                    }

                    if (value) {
                        expressions.push(value);
                    }

                    argsComma.push({ name:nameLoop, value:value, expand:expand });

                    if (parserInput.$char(',')) {
                        continue;
                    }

                    if (parserInput.$char(';') || isSemiColonSeparated) {

                        if (expressionContainsNamed) {
                            error("Cannot mix ; and , as delimiter types");
                        }

                        isSemiColonSeparated = true;

                        if (expressions.length > 1) {
                            value = new(tree.Value)(expressions);
                        }
                        argsSemiColon.push({ name:name, value:value, expand:expand });

                        name = null;
                        expressions = [];
                        expressionContainsNamed = false;
                    }
                }

                parserInput.forget();
                returner.args = isSemiColonSeparated ? argsSemiColon : argsComma;
                return returner;
            },
            //
            // A Mixin definition, with a list of parameters
            //
            //     .rounded (@radius: 2px, @color) {
            //        ...
            //     }
            //
            // Until we have a finer grained state-machine, we have to
            // do a look-ahead, to make sure we don't have a mixin call.
            // See the `rule` function for more information.
            //
            // We start by matching `.rounded (`, and then proceed on to
            // the argument list, which has optional default values.
            // We store the parameters in `params`, with a `value` key,
            // if there is a value, such as in the case of `@radius`.
            //
            // Once we've got our params list, and a closing `)`, we parse
            // the `{...}` block.
            //
            definition: function () {
                var name, params = [], match, ruleset, cond, variadic = false;
                if ((parserInput.currentChar() !== '.' && parserInput.currentChar() !== '#') ||
                    parserInput.peek(/^[^{]*\}/)) {
                    return;
                }

                parserInput.save();

                match = parserInput.$re(/^([#.](?:[\w-]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+)\s*\(/);
                if (match) {
                    name = match[1];

                    var argInfo = this.args(false);
                    params = argInfo.args;
                    variadic = argInfo.variadic;

                    // .mixincall("@{a}");
                    // looks a bit like a mixin definition..
                    // also
                    // .mixincall(@a: {rule: set;});
                    // so we have to be nice and restore
                    if (!parserInput.$char(')')) {
                        parserInput.restore("Missing closing ')'");
                        return;
                    }

                    parserInput.commentStore.length = 0;

                    if (parserInput.$str("when")) { // Guard
                        cond = expect(parsers.conditions, 'expected condition');
                    }

                    ruleset = parsers.block();

                    if (ruleset) {
                        parserInput.forget();
                        return new(tree.mixin.Definition)(name, params, ruleset, cond, variadic);
                    } else {
                        parserInput.restore();
                    }
                } else {
                    parserInput.forget();
                }
            }
        },

        //
        // Entities are the smallest recognized token,
        // and can be found inside a rule's value.
        //
        entity: function () {
            var entities = this.entities;

            return this.comment() || entities.literal() || entities.variable() || entities.url() ||
                   entities.call()    || entities.keyword()  || entities.javascript();
        },

        //
        // A Rule terminator. Note that we use `peek()` to check for '}',
        // because the `block` rule will be expecting it, but we still need to make sure
        // it's there, if ';' was ommitted.
        //
        end: function () {
            return parserInput.$char(';') || parserInput.peek('}');
        },

        //
        // IE's alpha function
        //
        //     alpha(opacity=88)
        //
        alpha: function () {
            var value;

            // http://jsperf.com/case-insensitive-regex-vs-strtolower-then-regex/18
            if (! parserInput.$re(/^opacity=/i)) { return; }
            value = parserInput.$re(/^\d+/);
            if (!value) {
                value = expect(this.entities.variable, "Could not parse alpha");
            }
            expectChar(')');
            return new(tree.Alpha)(value);
        },

        //
        // A Selector Element
        //
        //     div
        //     + h1
        //     #socks
        //     input[type="text"]
        //
        // Elements are the building blocks for Selectors,
        // they are made out of a `Combinator` (see combinator rule),
        // and an element name, such as a tag a class, or `*`.
        //
        element: function () {
            var e, c, v, index = parserInput.i;

            c = this.combinator();

            e = parserInput.$re(/^(?:\d+\.\d+|\d+)%/) ||
                parserInput.$re(/^(?:[.#]?|:*)(?:[\w-]|[^\x00-\x9f]|\\(?:[A-Fa-f0-9]{1,6} ?|[^A-Fa-f0-9]))+/) ||
                parserInput.$char('*') || parserInput.$char('&') || this.attribute() ||
                parserInput.$re(/^\([^&()@]+\)/) ||  parserInput.$re(/^[\.#:](?=@)/) ||
                this.entities.variableCurly();

            if (! e) {
                parserInput.save();
                if (parserInput.$char('(')) {
                    if ((v = this.selector()) && parserInput.$char(')')) {
                        e = new(tree.Paren)(v);
                        parserInput.forget();
                    } else {
                        parserInput.restore("Missing closing ')'");
                    }
                } else {
                    parserInput.forget();
                }
            }

            if (e) { return new(tree.Element)(c, e, index, fileInfo); }
        },

        //
        // Combinators combine elements together, in a Selector.
        //
        // Because our parser isn't white-space sensitive, special care
        // has to be taken, when parsing the descendant combinator, ` `,
        // as it's an empty space. We have to check the previous character
        // in the input, to see if it's a ` ` character. More info on how
        // we deal with this in *combinator.js*.
        //
        combinator: function () {
            var c = parserInput.currentChar();

            if (c === '/') {
                parserInput.save();
                var slashedCombinator = parserInput.$re(/^\/[a-z]+\//i);
                if (slashedCombinator) {
                    parserInput.forget();
                    return new(tree.Combinator)(slashedCombinator);
                }
                parserInput.restore();
            }

            if (c === '>' || c === '+' || c === '~' || c === '|' || c === '^') {
                parserInput.i++;
                if (c === '^' && parserInput.currentChar() === '^') {
                    c = '^^';
                    parserInput.i++;
                }
                while (parserInput.isWhitespace()) { parserInput.i++; }
                return new(tree.Combinator)(c);
            } else if (parserInput.isWhitespace(-1)) {
                return new(tree.Combinator)(" ");
            } else {
                return new(tree.Combinator)(null);
            }
        },
        //
        // A CSS selector (see selector below)
        // with less extensions e.g. the ability to extend and guard
        //
        lessSelector: function () {
            return this.selector(true);
        },
        //
        // A CSS Selector
        //
        //     .class > div + h1
        //     li a:hover
        //
        // Selectors are made out of one or more Elements, see above.
        //
        selector: function (isLess) {
            var index = parserInput.i, elements, extendList, c, e, allExtends, when, condition;

            while ((isLess && (extendList = this.extend())) || (isLess && (when = parserInput.$str("when"))) || (e = this.element())) {
                if (when) {
                    condition = expect(this.conditions, 'expected condition');
                } else if (condition) {
                    error("CSS guard can only be used at the end of selector");
                } else if (extendList) {
                    if (allExtends) {
                        allExtends = allExtends.concat(extendList);
                    } else {
                        allExtends = extendList;
                    }
                } else {
                    if (allExtends) { error("Extend can only be used at the end of selector"); }
                    c = parserInput.currentChar();
                    if (elements) {
                        elements.push(e);
                    } else {
                        elements = [ e ];
                    }
                    e = null;
                }
                if (c === '{' || c === '}' || c === ';' || c === ',' || c === ')') {
                    break;
                }
            }

            if (elements) { return new(tree.Selector)(elements, allExtends, condition, index, fileInfo); }
            if (allExtends) { error("Extend must be used to extend a selector, it cannot be used on its own"); }
        },
        attribute: function () {
            if (! parserInput.$char('[')) { return; }

            var entities = this.entities,
                key, val, op;

            if (!(key = entities.variableCurly())) {
                key = expect(/^(?:[_A-Za-z0-9-\*]*\|)?(?:[_A-Za-z0-9-]|\\.)+/);
            }

            op = parserInput.$re(/^[|~*$^]?=/);
            if (op) {
                val = entities.quoted() || parserInput.$re(/^[0-9]+%/) || parserInput.$re(/^[\w-]+/) || entities.variableCurly();
            }

            expectChar(']');

            return new(tree.Attribute)(key, op, val);
        },

        //
        // The `block` rule is used by `ruleset` and `mixin.definition`.
        // It's a wrapper around the `primary` rule, with added `{}`.
        //
        block: function () {
            var content;
            if (parserInput.$char('{') && (content = this.primary()) && parserInput.$char('}')) {
                return content;
            }
        },

        blockRuleset: function() {
            var block = this.block();

            if (block) {
                block = new tree.Ruleset(null, block);
            }
            return block;
        },

        detachedRuleset: function() {
            var blockRuleset = this.blockRuleset();
            if (blockRuleset) {
                return new tree.DetachedRuleset(blockRuleset);
            }
        },

        //
        // div, .class, body > p {...}
        //
        ruleset: function () {
            var selectors, s, rules, debugInfo;

            parserInput.save();

            if (context.dumpLineNumbers) {
                debugInfo = getDebugInfo(parserInput.i);
            }

            while (true) {
                s = this.lessSelector();
                if (!s) {
                    break;
                }
                if (selectors) {
                    selectors.push(s);
                } else {
                    selectors = [ s ];
                }
                parserInput.commentStore.length = 0;
                if (s.condition && selectors.length > 1) {
                    error("Guards are only currently allowed on a single selector.");
                }
                if (! parserInput.$char(',')) { break; }
                if (s.condition) {
                    error("Guards are only currently allowed on a single selector.");
                }
                parserInput.commentStore.length = 0;
            }

            if (selectors && (rules = this.block())) {
                parserInput.forget();
                var ruleset = new(tree.Ruleset)(selectors, rules, context.strictImports);
                if (context.dumpLineNumbers) {
                    ruleset.debugInfo = debugInfo;
                }
                return ruleset;
            } else {
                parserInput.restore();
            }
        },
        rule: function (tryAnonymous) {
            var name, value, startOfRule = parserInput.i, c = parserInput.currentChar(), important, merge, isVariable;

            if (c === '.' || c === '#' || c === '&' || c === ':') { return; }

            parserInput.save();

            name = this.variable() || this.ruleProperty();
            if (name) {
                isVariable = typeof name === "string";

                if (isVariable) {
                    value = this.detachedRuleset();
                }

                parserInput.commentStore.length = 0;
                if (!value) {
                    // a name returned by this.ruleProperty() is always an array of the form:
                    // [string-1, ..., string-n, ""] or [string-1, ..., string-n, "+"]
                    // where each item is a tree.Keyword or tree.Variable
                    merge = !isVariable && name.length > 1 && name.pop().value;

                    // prefer to try to parse first if its a variable or we are compressing
                    // but always fallback on the other one
                    var tryValueFirst = !tryAnonymous && (context.compress || isVariable);

                    if (tryValueFirst) {
                        value = this.value();
                    }
                    if (!value) {
                        value = this.anonymousValue();
                        if (value) {
                            parserInput.forget();
                            // anonymous values absorb the end ';' which is required for them to work
                            return new (tree.Rule)(name, value, false, merge, startOfRule, fileInfo);
                        }
                    }
                    if (!tryValueFirst && !value) {
                        value = this.value();
                    }

                    important = this.important();
                }

                if (value && this.end()) {
                    parserInput.forget();
                    return new (tree.Rule)(name, value, important, merge, startOfRule, fileInfo);
                } else {
                    parserInput.restore();
                    if (value && !tryAnonymous) {
                        return this.rule(true);
                    }
                }
            } else {
                parserInput.forget();
            }
        },
        anonymousValue: function () {
            var match = parserInput.$re(/^([^@+\/'"*`(;{}-]*);/);
            if (match) {
                return new(tree.Anonymous)(match[1]);
            }
        },

        //
        // An @import directive
        //
        //     @import "lib";
        //
        // Depending on our environment, importing is done differently:
        // In the browser, it's an XHR request, in Node, it would be a
        // file-system operation. The function used for importing is
        // stored in `import`, which we pass to the Import constructor.
        //
        "import": function () {
            var path, features, index = parserInput.i;

            var dir = parserInput.$re(/^@import?\s+/);

            if (dir) {
                var options = (dir ? this.importOptions() : null) || {};

                if ((path = this.entities.quoted() || this.entities.url())) {
                    features = this.mediaFeatures();

                    if (!parserInput.$char(';')) {
                        parserInput.i = index;
                        error("missing semi-colon or unrecognised media features on import");
                    }
                    features = features && new(tree.Value)(features);
                    return new(tree.Import)(path, features, options, index, fileInfo);
                }
                else {
                    parserInput.i = index;
                    error("malformed import statement");
                }
            }
        },

        importOptions: function() {
            var o, options = {}, optionName, value;

            // list of options, surrounded by parens
            if (! parserInput.$char('(')) { return null; }
            do {
                o = this.importOption();
                if (o) {
                    optionName = o;
                    value = true;
                    switch(optionName) {
                        case "css":
                            optionName = "less";
                            value = false;
                            break;
                        case "once":
                            optionName = "multiple";
                            value = false;
                            break;
                    }
                    options[optionName] = value;
                    if (! parserInput.$char(',')) { break; }
                }
            } while (o);
            expectChar(')');
            return options;
        },

        importOption: function() {
            var opt = parserInput.$re(/^(less|css|multiple|once|inline|reference|optional)/);
            if (opt) {
                return opt[1];
            }
        },

        mediaFeature: function () {
            var entities = this.entities, nodes = [], e, p;
            parserInput.save();
            do {
                e = entities.keyword() || entities.variable();
                if (e) {
                    nodes.push(e);
                } else if (parserInput.$char('(')) {
                    p = this.property();
                    e = this.value();
                    if (parserInput.$char(')')) {
                        if (p && e) {
                            nodes.push(new(tree.Paren)(new(tree.Rule)(p, e, null, null, parserInput.i, fileInfo, true)));
                        } else if (e) {
                            nodes.push(new(tree.Paren)(e));
                        } else {
                            error("badly formed media feature definition");
                        }
                    } else {
                        error("Missing closing ')'", "Parse");
                    }
                }
            } while (e);

            parserInput.forget();
            if (nodes.length > 0) {
                return new(tree.Expression)(nodes);
            }
        },

        mediaFeatures: function () {
            var entities = this.entities, features = [], e;
            do {
                e = this.mediaFeature();
                if (e) {
                    features.push(e);
                    if (! parserInput.$char(',')) { break; }
                } else {
                    e = entities.variable();
                    if (e) {
                        features.push(e);
                        if (! parserInput.$char(',')) { break; }
                    }
                }
            } while (e);

            return features.length > 0 ? features : null;
        },

        media: function () {
            var features, rules, media, debugInfo;

            if (context.dumpLineNumbers) {
                debugInfo = getDebugInfo(parserInput.i);
            }

            parserInput.save();

            if (parserInput.$str("@media")) {
                features = this.mediaFeatures();

                rules = this.block();

                if (!rules) {
                    error("media definitions require block statements after any features");
                }

                parserInput.forget();

                media = new(tree.Media)(rules, features, parserInput.i, fileInfo);
                if (context.dumpLineNumbers) {
                    media.debugInfo = debugInfo;
                }

                return media;
            }

            parserInput.restore();
        },

        //
        // A @plugin directive, used to import compiler extensions dynamically.
        //
        //     @plugin "lib";
        //
        // Depending on our environment, importing is done differently:
        // In the browser, it's an XHR request, in Node, it would be a
        // file-system operation. The function used for importing is
        // stored in `import`, which we pass to the Import constructor.
        //
        plugin: function () {
            var path,
                index = parserInput.i,
                dir   = parserInput.$re(/^@plugin?\s+/);

            if (dir) {
                var options = { plugin : true };

                if ((path = this.entities.quoted() || this.entities.url())) {

                    if (!parserInput.$char(';')) {
                        parserInput.i = index;
                        error("missing semi-colon on plugin");
                    }

                    return new(tree.Import)(path, null, options, index, fileInfo);
                }
                else {
                    parserInput.i = index;
                    error("malformed plugin statement");
                }
            }
        },

        //
        // A CSS Directive
        //
        //     @charset "utf-8";
        //
        directive: function () {
            var index = parserInput.i, name, value, rules, nonVendorSpecificName,
                hasIdentifier, hasExpression, hasUnknown, hasBlock = true, isRooted = true;

            if (parserInput.currentChar() !== '@') { return; }

            value = this['import']() || this.plugin() || this.media();
            if (value) {
                return value;
            }

            parserInput.save();

            name = parserInput.$re(/^@[a-z-]+/);

            if (!name) { return; }

            nonVendorSpecificName = name;
            if (name.charAt(1) == '-' && name.indexOf('-', 2) > 0) {
                nonVendorSpecificName = "@" + name.slice(name.indexOf('-', 2) + 1);
            }

            switch(nonVendorSpecificName) {
                case "@charset":
                    hasIdentifier = true;
                    hasBlock = false;
                    break;
                case "@namespace":
                    hasExpression = true;
                    hasBlock = false;
                    break;
                case "@keyframes":
                case "@counter-style":
                    hasIdentifier = true;
                    break;
                case "@document":
                case "@supports":
                    hasUnknown = true;
                    isRooted = false;
                    break;
                default:
                    hasUnknown = true;
                    break;
            }

            parserInput.commentStore.length = 0;

            if (hasIdentifier) {
                value = this.entity();
                if (!value) {
                    error("expected " + name + " identifier");
                }
            } else if (hasExpression) {
                value = this.expression();
                if (!value) {
                    error("expected " + name + " expression");
                }
            } else if (hasUnknown) {
                value = (parserInput.$re(/^[^{;]+/) || '').trim();
                hasBlock = (parserInput.currentChar() == '{');
                if (value) {
                    value = new(tree.Anonymous)(value);
                }
            }

            if (hasBlock) {
                rules = this.blockRuleset();
            }

            if (rules || (!hasBlock && value && parserInput.$char(';'))) {
                parserInput.forget();
                return new (tree.Directive)(name, value, rules, index, fileInfo,
                    context.dumpLineNumbers ? getDebugInfo(index) : null,
                    isRooted
                );
            }

            parserInput.restore("directive options not recognised");
        },

        //
        // A Value is a comma-delimited list of Expressions
        //
        //     font-family: Baskerville, Georgia, serif;
        //
        // In a Rule, a Value represents everything after the `:`,
        // and before the `;`.
        //
        value: function () {
            var e, expressions = [];

            do {
                e = this.expression();
                if (e) {
                    expressions.push(e);
                    if (! parserInput.$char(',')) { break; }
                }
            } while (e);

            if (expressions.length > 0) {
                return new(tree.Value)(expressions);
            }
        },
        important: function () {
            if (parserInput.currentChar() === '!') {
                return parserInput.$re(/^! *important/);
            }
        },
        sub: function () {
            var a, e;

            parserInput.save();
            if (parserInput.$char('(')) {
                a = this.addition();
                if (a && parserInput.$char(')')) {
                    parserInput.forget();
                    e = new(tree.Expression)([a]);
                    e.parens = true;
                    return e;
                }
                parserInput.restore("Expected ')'");
                return;
            }
            parserInput.restore();
        },
        multiplication: function () {
            var m, a, op, operation, isSpaced;
            m = this.operand();
            if (m) {
                isSpaced = parserInput.isWhitespace(-1);
                while (true) {
                    if (parserInput.peek(/^\/[*\/]/)) {
                        break;
                    }

                    parserInput.save();

                    op = parserInput.$char('/') || parserInput.$char('*');

                    if (!op) { parserInput.forget(); break; }

                    a = this.operand();

                    if (!a) { parserInput.restore(); break; }
                    parserInput.forget();

                    m.parensInOp = true;
                    a.parensInOp = true;
                    operation = new(tree.Operation)(op, [operation || m, a], isSpaced);
                    isSpaced = parserInput.isWhitespace(-1);
                }
                return operation || m;
            }
        },
        addition: function () {
            var m, a, op, operation, isSpaced;
            m = this.multiplication();
            if (m) {
                isSpaced = parserInput.isWhitespace(-1);
                while (true) {
                    op = parserInput.$re(/^[-+]\s+/) || (!isSpaced && (parserInput.$char('+') || parserInput.$char('-')));
                    if (!op) {
                        break;
                    }
                    a = this.multiplication();
                    if (!a) {
                        break;
                    }

                    m.parensInOp = true;
                    a.parensInOp = true;
                    operation = new(tree.Operation)(op, [operation || m, a], isSpaced);
                    isSpaced = parserInput.isWhitespace(-1);
                }
                return operation || m;
            }
        },
        conditions: function () {
            var a, b, index = parserInput.i, condition;

            a = this.condition();
            if (a) {
                while (true) {
                    if (!parserInput.peek(/^,\s*(not\s*)?\(/) || !parserInput.$char(',')) {
                        break;
                    }
                    b = this.condition();
                    if (!b) {
                        break;
                    }
                    condition = new(tree.Condition)('or', condition || a, b, index);
                }
                return condition || a;
            }
        },
        condition: function () {
            var result, logical, next;
            function or() {
                return parserInput.$str("or");
            }

            result = this.conditionAnd(this);
            if (!result) {
                return ;
            }
            logical = or();
            if (logical) {
                next = this.condition();
                if (next) {
                    result = new(tree.Condition)(logical, result, next);
                } else {
                    return ;
                }
            }
            return result;
        },
        conditionAnd: function () {
            var result, logical, next;
            function insideCondition(me) {
                return me.negatedCondition() || me.parenthesisCondition();
            }
            function and() {
                return parserInput.$str("and");
            }

            result = insideCondition(this);
            if (!result) {
                return ;
            }
            logical = and();
            if (logical) {
                next = this.conditionAnd();
                if (next) {
                    result = new(tree.Condition)(logical, result, next);
                } else {
                    return ;
                }
            }
            return result;
        },
        negatedCondition: function () {
            if (parserInput.$str("not")) {
                var result = this.parenthesisCondition();
                if (result) {
                    result.negate = !result.negate;
                }
                return result;
            }
        },
        parenthesisCondition: function () {
            var body;
            if (!parserInput.$str("(")) {
                return ;
            }
            body = this.condition() || this.atomicCondition();
            expectChar(')');
            return body;
        },
        atomicCondition: function () {
            var entities = this.entities, index = parserInput.i, a, b, c, op;

            a = this.addition() || entities.keyword() || entities.quoted();
            if (a) {
                if (parserInput.$char('>')) {
                    if (parserInput.$char('=')) {
                        op = ">=";
                    } else {
                        op = '>';
                    }
                } else
                if (parserInput.$char('<')) {
                    if (parserInput.$char('=')) {
                        op = "<=";
                    } else {
                        op = '<';
                    }
                } else
                if (parserInput.$char('=')) {
                    if (parserInput.$char('>')) {
                        op = "=>";
                    } else if (parserInput.$char('<')) {
                        op = '=<';
                    } else {
                        op = '=';
                    }
                }
                if (op) {
                    b = this.addition() || entities.keyword() || entities.quoted();
                    if (b) {
                        c = new(tree.Condition)(op, a, b, index, false);
                    } else {
                        error('expected expression');
                    }
                } else {
                    c = new(tree.Condition)('=', a, new(tree.Keyword)('true'), index, false);
                }
                return c;
            }
        },

        //
        // An operand is anything that can be part of an operation,
        // such as a Color, or a Variable
        //
        operand: function () {
            var entities = this.entities, negate;

            if (parserInput.peek(/^-[@\(]/)) {
                negate = parserInput.$char('-');
            }

            var o = this.sub() || entities.dimension() ||
                    entities.variable() ||
                    entities.call() || entities.color();

            if (negate) {
                o.parensInOp = true;
                o = new(tree.Negative)(o);
            }

            return o;
        },

        //
        // Expressions either represent mathematical operations,
        // or white-space delimited Entities.
        //
        //     1px solid black
        //     @var * 2
        //
        expression: function () {
            var entities = [], e, delim;

            do {
                e = this.comment();
                if (e) {
                    entities.push(e);
                    continue;
                }
                e = this.addition() || this.entity();
                if (e) {
                    entities.push(e);
                    // operations do not allow keyword "/" dimension (e.g. small/20px) so we support that here
                    if (!parserInput.peek(/^\/[\/*]/)) {
                        delim = parserInput.$char('/');
                        if (delim) {
                            entities.push(new(tree.Anonymous)(delim));
                        }
                    }
                }
            } while (e);
            if (entities.length > 0) {
                return new(tree.Expression)(entities);
            }
        },
        property: function () {
            var name = parserInput.$re(/^(\*?-?[_a-zA-Z0-9-]+)\s*:/);
            if (name) {
                return name[1];
            }
        },
        ruleProperty: function () {
            var name = [], index = [], s, k;

            parserInput.save();

            var simpleProperty = parserInput.$re(/^([_a-zA-Z0-9-]+)\s*:/);
            if (simpleProperty) {
                name = [new(tree.Keyword)(simpleProperty[1])];
                parserInput.forget();
                return name;
            }

            function match(re) {
                var i = parserInput.i,
                    chunk = parserInput.$re(re);
                if (chunk) {
                    index.push(i);
                    return name.push(chunk[1]);
                }
            }

            match(/^(\*?)/);
            while (true) {
                if (!match(/^((?:[\w-]+)|(?:@\{[\w-]+\}))/)) {
                    break;
                }
            }

            if ((name.length > 1) && match(/^((?:\+_|\+)?)\s*:/)) {
                parserInput.forget();

                // at last, we have the complete match now. move forward,
                // convert name particles to tree objects and return:
                if (name[0] === '') {
                    name.shift();
                    index.shift();
                }
                for (k = 0; k < name.length; k++) {
                    s = name[k];
                    name[k] = (s.charAt(0) !== '@') ?
                        new(tree.Keyword)(s) :
                        new(tree.Variable)('@' + s.slice(2, -1),
                            index[k], fileInfo);
                }
                return name;
            }
            parserInput.restore();
        }
    }
};

}; Parser.serializeVars = function(vars) {

var s = '';

for (var name in vars) {
    if (Object.hasOwnProperty.call(vars, name)) {
        var value = vars[name];
        s += ((name[0] === '@') ? '' : '@') + name + ': ' + value +
            ((String(value).slice(-1) === ';') ? '' : ';');
    }
}

return s;

};

module.exports = Parser;

},{“../less-error”:32,“../tree”:62,“../utils”:83,“../visitors”:87,“./parser-input”:37}],39:[function(require,module,exports){ /**

* Plugin Manager
*/

var PluginManager = function(less) {

this.less = less;
this.visitors = [];
this.preProcessors = [];
this.postProcessors = [];
this.installedPlugins = [];
this.fileManagers = [];

}; /**

* Adds all the plugins in the array
* @param {Array} plugins
*/

PluginManager.prototype.addPlugins = function(plugins) {

if (plugins) {
    for (var i = 0; i < plugins.length; i++) {
        this.addPlugin(plugins[i]);
    }
}

}; /**

*
* @param plugin
*/

PluginManager.prototype.addPlugin = function(plugin) {

this.installedPlugins.push(plugin);
plugin.install(this.less, this);

}; /**

* Adds a visitor. The visitor object has options on itself to determine
* when it should run.
* @param visitor
*/

PluginManager.prototype.addVisitor = function(visitor) {

this.visitors.push(visitor);

}; /**

* Adds a pre processor object
* @param {object} preProcessor
* @param {number} priority - guidelines 1 = before import, 1000 = import, 2000 = after import
*/

PluginManager.prototype.addPreProcessor = function(preProcessor, priority) {

var indexToInsertAt;
for (indexToInsertAt = 0; indexToInsertAt < this.preProcessors.length; indexToInsertAt++) {
    if (this.preProcessors[indexToInsertAt].priority >= priority) {
        break;
    }
}
this.preProcessors.splice(indexToInsertAt, 0, {preProcessor: preProcessor, priority: priority});

}; /**

* Adds a post processor object
* @param {object} postProcessor
* @param {number} priority - guidelines 1 = before compression, 1000 = compression, 2000 = after compression
*/

PluginManager.prototype.addPostProcessor = function(postProcessor, priority) {

var indexToInsertAt;
for (indexToInsertAt = 0; indexToInsertAt < this.postProcessors.length; indexToInsertAt++) {
    if (this.postProcessors[indexToInsertAt].priority >= priority) {
        break;
    }
}
this.postProcessors.splice(indexToInsertAt, 0, {postProcessor: postProcessor, priority: priority});

}; /**

*
* @param manager
*/

PluginManager.prototype.addFileManager = function(manager) {

this.fileManagers.push(manager);

}; /**

*
* @returns {Array}
* @private
*/

PluginManager.prototype.getPreProcessors = function() {

var preProcessors = [];
for (var i = 0; i < this.preProcessors.length; i++) {
    preProcessors.push(this.preProcessors[i].preProcessor);
}
return preProcessors;

}; /**

*
* @returns {Array}
* @private
*/

PluginManager.prototype.getPostProcessors = function() {

var postProcessors = [];
for (var i = 0; i < this.postProcessors.length; i++) {
    postProcessors.push(this.postProcessors[i].postProcessor);
}
return postProcessors;

}; /**

*
* @returns {Array}
* @private
*/

PluginManager.prototype.getVisitors = function() {

return this.visitors;

}; /**

*
* @returns {Array}
* @private
*/

PluginManager.prototype.getFileManagers = function() {

return this.fileManagers;

}; module.exports = PluginManager;

},{}],40:[function(require,module,exports){ var LessError = require('../less-error'),

tree = require("../tree");

var FunctionImporter = module.exports = function FunctionImporter(context, fileInfo) {

this.fileInfo = fileInfo;

};

FunctionImporter.prototype.eval = function(contents, callback) {

var loaded = {},
    loader,
    registry;

registry = {
    add: function(name, func) {
        loaded[name] = func;
    },
    addMultiple: function(functions) {
        Object.keys(functions).forEach(function(name) {
            loaded[name] = functions[name];
        });
    }
};

try {
    loader = new Function("functions", "tree", "fileInfo", contents);
    loader(registry, tree, this.fileInfo);
} catch(e) {
    callback(new LessError({
        message: "Plugin evaluation error: '" + e.name + ': ' + e.message.replace(/["]/g, "'") + "'" ,
        filename: this.fileInfo.filename
    }), null );
}

callback(null, { functions: loaded });

};

},{“../less-error”:32,“../tree”:62}],41:[function(require,module,exports){ var PromiseConstructor;

module.exports = function(environment, ParseTree, ImportManager) {

var render = function (input, options, callback) {
    if (typeof options === 'function') {
        callback = options;
        options = {};
    }

    if (!callback) {
        if (!PromiseConstructor) {
            PromiseConstructor = typeof Promise === 'undefined' ? require('promise') : Promise;
        }
        var self = this;
        return new PromiseConstructor(function (resolve, reject) {
            render.call(self, input, options, function(err, output) {
                if (err) {
                    reject(err);
                } else {
                    resolve(output);
                }
            });
        });
    } else {
        this.parse(input, options, function(err, root, imports, options) {
            if (err) { return callback(err); }

            var result;
            try {
                var parseTree = new ParseTree(root, imports);
                result = parseTree.toCSS(options);
            }
            catch (err) { return callback(err); }

            callback(null, result);
        });
    }
};

return render;

};

},{“promise”:undefined}],42:[function(require,module,exports){ module.exports = function (SourceMapOutput, environment) {

var SourceMapBuilder = function (options) {
    this.options = options;
};

SourceMapBuilder.prototype.toCSS = function(rootNode, options, imports) {
    var sourceMapOutput = new SourceMapOutput(
        {
            contentsIgnoredCharsMap: imports.contentsIgnoredChars,
            rootNode: rootNode,
            contentsMap: imports.contents,
            sourceMapFilename: this.options.sourceMapFilename,
            sourceMapURL: this.options.sourceMapURL,
            outputFilename: this.options.sourceMapOutputFilename,
            sourceMapBasepath: this.options.sourceMapBasepath,
            sourceMapRootpath: this.options.sourceMapRootpath,
            outputSourceFiles: this.options.outputSourceFiles,
            sourceMapGenerator: this.options.sourceMapGenerator,
            sourceMapFileInline: this.options.sourceMapFileInline
        });

    var css = sourceMapOutput.toCSS(options);
    this.sourceMap = sourceMapOutput.sourceMap;
    this.sourceMapURL = sourceMapOutput.sourceMapURL;
    if (this.options.sourceMapInputFilename) {
        this.sourceMapInputFilename = sourceMapOutput.normalizeFilename(this.options.sourceMapInputFilename);
    }
    return css + this.getCSSAppendage();
};

SourceMapBuilder.prototype.getCSSAppendage = function() {

    var sourceMapURL = this.sourceMapURL;
    if (this.options.sourceMapFileInline) {
        if (this.sourceMap === undefined) {
            return "";
        }
        sourceMapURL = "data:application/json;base64," + environment.encodeBase64(this.sourceMap);
    }

    if (sourceMapURL) {
        return "/*# sourceMappingURL=" + sourceMapURL + " */";
    }
    return "";
};

SourceMapBuilder.prototype.getExternalSourceMap = function() {
    return this.sourceMap;
};
SourceMapBuilder.prototype.setExternalSourceMap = function(sourceMap) {
    this.sourceMap = sourceMap;
};

SourceMapBuilder.prototype.isInline = function() {
    return this.options.sourceMapFileInline;
};
SourceMapBuilder.prototype.getSourceMapURL = function() {
    return this.sourceMapURL;
};
SourceMapBuilder.prototype.getOutputFilename = function() {
    return this.options.sourceMapOutputFilename;
};
SourceMapBuilder.prototype.getInputFilename = function() {
    return this.sourceMapInputFilename;
};

return SourceMapBuilder;

};

},{}],43:[function(require,module,exports){ module.exports = function (environment) {

var SourceMapOutput = function (options) {
    this._css = [];
    this._rootNode = options.rootNode;
    this._contentsMap = options.contentsMap;
    this._contentsIgnoredCharsMap = options.contentsIgnoredCharsMap;
    if (options.sourceMapFilename) {
        this._sourceMapFilename = options.sourceMapFilename.replace(/\\/g, '/');
    }
    this._outputFilename = options.outputFilename;
    this.sourceMapURL = options.sourceMapURL;
    if (options.sourceMapBasepath) {
        this._sourceMapBasepath = options.sourceMapBasepath.replace(/\\/g, '/');
    }
    if (options.sourceMapRootpath) {
        this._sourceMapRootpath = options.sourceMapRootpath.replace(/\\/g, '/');
        if (this._sourceMapRootpath.charAt(this._sourceMapRootpath.length - 1) !== '/') {
            this._sourceMapRootpath += '/';
        }
    } else {
        this._sourceMapRootpath = "";
    }
    this._outputSourceFiles = options.outputSourceFiles;
    this._sourceMapGeneratorConstructor = environment.getSourceMapGenerator();

    this._lineNumber = 0;
    this._column = 0;
};

SourceMapOutput.prototype.normalizeFilename = function(filename) {
    filename = filename.replace(/\\/g, '/');

    if (this._sourceMapBasepath && filename.indexOf(this._sourceMapBasepath) === 0) {
        filename = filename.substring(this._sourceMapBasepath.length);
        if (filename.charAt(0) === '\\' || filename.charAt(0) === '/') {
            filename = filename.substring(1);
        }
    }
    return (this._sourceMapRootpath || "") + filename;
};

SourceMapOutput.prototype.add = function(chunk, fileInfo, index, mapLines) {

    //ignore adding empty strings
    if (!chunk) {
        return;
    }

    var lines,
        sourceLines,
        columns,
        sourceColumns,
        i;

    if (fileInfo) {
        var inputSource = this._contentsMap[fileInfo.filename];

        // remove vars/banner added to the top of the file
        if (this._contentsIgnoredCharsMap[fileInfo.filename]) {
            // adjust the index
            index -= this._contentsIgnoredCharsMap[fileInfo.filename];
            if (index < 0) { index = 0; }
            // adjust the source
            inputSource = inputSource.slice(this._contentsIgnoredCharsMap[fileInfo.filename]);
        }
        inputSource = inputSource.substring(0, index);
        sourceLines = inputSource.split("\n");
        sourceColumns = sourceLines[sourceLines.length - 1];
    }

    lines = chunk.split("\n");
    columns = lines[lines.length - 1];

    if (fileInfo) {
        if (!mapLines) {
            this._sourceMapGenerator.addMapping({ generated: { line: this._lineNumber + 1, column: this._column},
                original: { line: sourceLines.length, column: sourceColumns.length},
                source: this.normalizeFilename(fileInfo.filename)});
        } else {
            for (i = 0; i < lines.length; i++) {
                this._sourceMapGenerator.addMapping({ generated: { line: this._lineNumber + i + 1, column: i === 0 ? this._column : 0},
                    original: { line: sourceLines.length + i, column: i === 0 ? sourceColumns.length : 0},
                    source: this.normalizeFilename(fileInfo.filename)});
            }
        }
    }

    if (lines.length === 1) {
        this._column += columns.length;
    } else {
        this._lineNumber += lines.length - 1;
        this._column = columns.length;
    }

    this._css.push(chunk);
};

SourceMapOutput.prototype.isEmpty = function() {
    return this._css.length === 0;
};

SourceMapOutput.prototype.toCSS = function(context) {
    this._sourceMapGenerator = new this._sourceMapGeneratorConstructor({ file: this._outputFilename, sourceRoot: null });

    if (this._outputSourceFiles) {
        for (var filename in this._contentsMap) {
            if (this._contentsMap.hasOwnProperty(filename)) {
                var source = this._contentsMap[filename];
                if (this._contentsIgnoredCharsMap[filename]) {
                    source = source.slice(this._contentsIgnoredCharsMap[filename]);
                }
                this._sourceMapGenerator.setSourceContent(this.normalizeFilename(filename), source);
            }
        }
    }

    this._rootNode.genCSS(context, this);

    if (this._css.length > 0) {
        var sourceMapURL,
            sourceMapContent = JSON.stringify(this._sourceMapGenerator.toJSON());

        if (this.sourceMapURL) {
            sourceMapURL = this.sourceMapURL;
        } else if (this._sourceMapFilename) {
            sourceMapURL = this._sourceMapFilename;
        }
        this.sourceMapURL = sourceMapURL;

        this.sourceMap = sourceMapContent;
    }

    return this._css.join('');
};

return SourceMapOutput;

};

},{}],44:[function(require,module,exports){ var contexts = require(“./contexts”),

visitor = require("./visitors"),
tree = require("./tree");

module.exports = function(root, options) {

options = options || {};
var evaldRoot,
    variables = options.variables,
    evalEnv = new contexts.Eval(options);

//
// Allows setting variables with a hash, so:
//
//   `{ color: new tree.Color('#f01') }` will become:
//
//   new tree.Rule('@color',
//     new tree.Value([
//       new tree.Expression([
//         new tree.Color('#f01')
//       ])
//     ])
//   )
//
if (typeof variables === 'object' && !Array.isArray(variables)) {
    variables = Object.keys(variables).map(function (k) {
        var value = variables[k];

        if (! (value instanceof tree.Value)) {
            if (! (value instanceof tree.Expression)) {
                value = new tree.Expression([value]);
            }
            value = new tree.Value([value]);
        }
        return new tree.Rule('@' + k, value, false, null, 0);
    });
    evalEnv.frames = [new tree.Ruleset(null, variables)];
}

var preEvalVisitors = [],
    visitors = [
        new visitor.JoinSelectorVisitor(),
        new visitor.MarkVisibleSelectorsVisitor(true),
        new visitor.ExtendVisitor(),
        new visitor.ToCSSVisitor({compress: Boolean(options.compress)})
    ], i;

if (options.pluginManager) {
    var pluginVisitors = options.pluginManager.getVisitors();
    for (i = 0; i < pluginVisitors.length; i++) {
        var pluginVisitor = pluginVisitors[i];
        if (pluginVisitor.isPreEvalVisitor) {
            preEvalVisitors.push(pluginVisitor);
        } else {
            if (pluginVisitor.isPreVisitor) {
                visitors.splice(0, 0, pluginVisitor);
            } else {
                visitors.push(pluginVisitor);
            }
        }
    }
}

for (i = 0; i < preEvalVisitors.length; i++) {
    preEvalVisitors[i].run(root);
}

evaldRoot = root.eval(evalEnv);

for (i = 0; i < visitors.length; i++) {
    visitors[i].run(evaldRoot);
}

return evaldRoot;

};

},{“./contexts”:11,“./tree”:62,“./visitors”:87}],45:[function(require,module,exports){ var Node = require(“./node”);

var Alpha = function (val) {

this.value = val;

}; Alpha.prototype = new Node(); Alpha.prototype.type = “Alpha”;

Alpha.prototype.accept = function (visitor) {

this.value = visitor.visit(this.value);

}; Alpha.prototype.eval = function (context) {

if (this.value.eval) { return new Alpha(this.value.eval(context)); }
return this;

}; Alpha.prototype.genCSS = function (context, output) {

output.add("alpha(opacity=");

if (this.value.genCSS) {
    this.value.genCSS(context, output);
} else {
    output.add(this.value);
}

output.add(")");

};

module.exports = Alpha;

},{“./node”:70}],46:[function(require,module,exports){ var Node = require(“./node”);

var Anonymous = function (value, index, currentFileInfo, mapLines, rulesetLike, visibilityInfo) {

this.value = value;
this.index = index;
this.mapLines = mapLines;
this.currentFileInfo = currentFileInfo;
this.rulesetLike = (typeof rulesetLike === 'undefined') ? false : rulesetLike;

this.copyVisibilityInfo(visibilityInfo);

}; Anonymous.prototype = new Node(); Anonymous.prototype.type = “Anonymous”; Anonymous.prototype.eval = function () {

return new Anonymous(this.value, this.index, this.currentFileInfo, this.mapLines, this.rulesetLike, this.visibilityInfo());

}; Anonymous.prototype.compare = function (other) {

return other.toCSS && this.toCSS() === other.toCSS() ? 0 : undefined;

}; Anonymous.prototype.isRulesetLike = function() {

return this.rulesetLike;

}; Anonymous.prototype.genCSS = function (context, output) {

output.add(this.value, this.currentFileInfo, this.index, this.mapLines);

}; module.exports = Anonymous;

},{“./node”:70}],47:[function(require,module,exports){ var Node = require(“./node”);

var Assignment = function (key, val) {

this.key = key;
this.value = val;

};

Assignment.prototype = new Node(); Assignment.prototype.type = “Assignment”; Assignment.prototype.accept = function (visitor) {

this.value = visitor.visit(this.value);

}; Assignment.prototype.eval = function (context) {

if (this.value.eval) {
    return new Assignment(this.key, this.value.eval(context));
}
return this;

}; Assignment.prototype.genCSS = function (context, output) {

output.add(this.key + '=');
if (this.value.genCSS) {
    this.value.genCSS(context, output);
} else {
    output.add(this.value);
}

}; module.exports = Assignment;

},{“./node”:70}],48:[function(require,module,exports){ var Node = require(“./node”);

var Attribute = function (key, op, value) {

this.key = key;
this.op = op;
this.value = value;

}; Attribute.prototype = new Node(); Attribute.prototype.type = “Attribute”; Attribute.prototype.eval = function (context) {

return new Attribute(this.key.eval ? this.key.eval(context) : this.key,
    this.op, (this.value && this.value.eval) ? this.value.eval(context) : this.value);

}; Attribute.prototype.genCSS = function (context, output) {

output.add(this.toCSS(context));

}; Attribute.prototype.toCSS = function (context) {

var value = this.key.toCSS ? this.key.toCSS(context) : this.key;

if (this.op) {
    value += this.op;
    value += (this.value.toCSS ? this.value.toCSS(context) : this.value);
}

return '[' + value + ']';

}; module.exports = Attribute;

},{“./node”:70}],49:[function(require,module,exports){ var Node = require(“./node”),

FunctionCaller = require("../functions/function-caller");

// // A function call node. // var Call = function (name, args, index, currentFileInfo) {

this.name = name;
this.args = args;
this.index = index;
this.currentFileInfo = currentFileInfo;

}; Call.prototype = new Node(); Call.prototype.type = “Call”; Call.prototype.accept = function (visitor) {

if (this.args) {
    this.args = visitor.visitArray(this.args);
}

}; // // When evaluating a function call, // we either find the function in the functionRegistry, // in which case we call it, passing the evaluated arguments, // if this returns null or we cannot find the function, we // simply print it out as it appeared originally [2]. // // The reason why we evaluate the arguments, is in the case where // we try to pass a variable to a function, like: `saturate(@color)`. // The function should receive the value, not the variable. // Call.prototype.eval = function (context) {

var args = this.args.map(function (a) { return a.eval(context); }),
    result, funcCaller = new FunctionCaller(this.name, context, this.index, this.currentFileInfo);

if (funcCaller.isValid()) { // 1.
    try {
        result = funcCaller.call(args);
        if (result != null) {
            return result;
        }
    } catch (e) {
        throw { type: e.type || "Runtime",
                message: "error evaluating function `" + this.name + "`" +
                         (e.message ? ': ' + e.message : ''),
                index: this.index, filename: this.currentFileInfo.filename };
    }
}

return new Call(this.name, args, this.index, this.currentFileInfo);

}; Call.prototype.genCSS = function (context, output) {

output.add(this.name + "(", this.currentFileInfo, this.index);

for (var i = 0; i < this.args.length; i++) {
    this.args[i].genCSS(context, output);
    if (i + 1 < this.args.length) {
        output.add(", ");
    }
}

output.add(")");

}; module.exports = Call;

},{“../functions/function-caller”:21,“./node”:70}],50:[function(require,module,exports){ var Node = require(“./node”),

colors = require("../data/colors");

// // RGB Colors - ff0014, eee // var Color = function (rgb, a, originalForm) {

//
// The end goal here, is to parse the arguments
// into an integer triplet, such as `128, 255, 0`
//
// This facilitates operations and conversions.
//
if (Array.isArray(rgb)) {
    this.rgb = rgb;
} else if (rgb.length == 6) {
    this.rgb = rgb.match(/.{2}/g).map(function (c) {
        return parseInt(c, 16);
    });
} else {
    this.rgb = rgb.split('').map(function (c) {
        return parseInt(c + c, 16);
    });
}
this.alpha = typeof a === 'number' ? a : 1;
if (typeof originalForm !== 'undefined') {
    this.value = originalForm;
}

};

Color.prototype = new Node(); Color.prototype.type = “Color”;

function clamp(v, max) {

return Math.min(Math.max(v, 0), max);

}

function toHex(v) {

return '#' + v.map(function (c) {
    c = clamp(Math.round(c), 255);
    return (c < 16 ? '0' : '') + c.toString(16);
}).join('');

}

Color.prototype.luma = function () {

var r = this.rgb[0] / 255,
    g = this.rgb[1] / 255,
    b = this.rgb[2] / 255;

r = (r <= 0.03928) ? r / 12.92 : Math.pow(((r + 0.055) / 1.055), 2.4);
g = (g <= 0.03928) ? g / 12.92 : Math.pow(((g + 0.055) / 1.055), 2.4);
b = (b <= 0.03928) ? b / 12.92 : Math.pow(((b + 0.055) / 1.055), 2.4);

return 0.2126 * r + 0.7152 * g + 0.0722 * b;

}; Color.prototype.genCSS = function (context, output) {

output.add(this.toCSS(context));

}; Color.prototype.toCSS = function (context, doNotCompress) {

var compress = context && context.compress && !doNotCompress, color, alpha;

// `value` is set if this color was originally
// converted from a named color string so we need
// to respect this and try to output named color too.
if (this.value) {
    return this.value;
}

// If we have some transparency, the only way to represent it
// is via `rgba`. Otherwise, we use the hex representation,
// which has better compatibility with older browsers.
// Values are capped between `0` and `255`, rounded and zero-padded.
alpha = this.fround(context, this.alpha);
if (alpha < 1) {
    return "rgba(" + this.rgb.map(function (c) {
        return clamp(Math.round(c), 255);
    }).concat(clamp(alpha, 1))
        .join(',' + (compress ? '' : ' ')) + ")";
}

color = this.toRGB();

if (compress) {
    var splitcolor = color.split('');

    // Convert color to short format
    if (splitcolor[1] === splitcolor[2] && splitcolor[3] === splitcolor[4] && splitcolor[5] === splitcolor[6]) {
        color = '#' + splitcolor[1] + splitcolor[3] + splitcolor[5];
    }
}

return color;

};

// // Operations have to be done per-channel, if not, // channels will spill onto each other. Once we have // our result, in the form of an integer triplet, // we create a new Color node to hold the result. // Color.prototype.operate = function (context, op, other) {

var rgb = [];
var alpha = this.alpha * (1 - other.alpha) + other.alpha;
for (var c = 0; c < 3; c++) {
    rgb[c] = this._operate(context, op, this.rgb[c], other.rgb[c]);
}
return new Color(rgb, alpha);

}; Color.prototype.toRGB = function () {

return toHex(this.rgb);

}; Color.prototype.toHSL = function () {

var r = this.rgb[0] / 255,
    g = this.rgb[1] / 255,
    b = this.rgb[2] / 255,
    a = this.alpha;

var max = Math.max(r, g, b), min = Math.min(r, g, b);
var h, s, l = (max + min) / 2, d = max - min;

if (max === min) {
    h = s = 0;
} else {
    s = l > 0.5 ? d / (2 - max - min) : d / (max + min);

    switch (max) {
        case r: h = (g - b) / d + (g < b ? 6 : 0); break;
        case g: h = (b - r) / d + 2;               break;
        case b: h = (r - g) / d + 4;               break;
    }
    h /= 6;
}
return { h: h * 360, s: s, l: l, a: a };

}; //Adapted from mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript Color.prototype.toHSV = function () {

var r = this.rgb[0] / 255,
    g = this.rgb[1] / 255,
    b = this.rgb[2] / 255,
    a = this.alpha;

var max = Math.max(r, g, b), min = Math.min(r, g, b);
var h, s, v = max;

var d = max - min;
if (max === 0) {
    s = 0;
} else {
    s = d / max;
}

if (max === min) {
    h = 0;
} else {
    switch(max) {
        case r: h = (g - b) / d + (g < b ? 6 : 0); break;
        case g: h = (b - r) / d + 2; break;
        case b: h = (r - g) / d + 4; break;
    }
    h /= 6;
}
return { h: h * 360, s: s, v: v, a: a };

}; Color.prototype.toARGB = function () {

return toHex([this.alpha * 255].concat(this.rgb));

}; Color.prototype.compare = function (x) {

return (x.rgb &&
    x.rgb[0] === this.rgb[0] &&
    x.rgb[1] === this.rgb[1] &&
    x.rgb[2] === this.rgb[2] &&
    x.alpha  === this.alpha) ? 0 : undefined;

};

Color.fromKeyword = function(keyword) {

var c, key = keyword.toLowerCase();
if (colors.hasOwnProperty(key)) {
    c = new Color(colors[key].slice(1));
}
else if (key === "transparent") {
    c = new Color([0, 0, 0], 0);
}

if (c) {
    c.value = keyword;
    return c;
}

}; module.exports = Color;

},{“../data/colors”:12,“./node”:70}],51:[function(require,module,exports){ var Node = require(“./node”);

var Combinator = function (value) {

if (value === ' ') {
    this.value = ' ';
    this.emptyOrWhitespace = true;
} else {
    this.value = value ? value.trim() : "";
    this.emptyOrWhitespace = this.value === "";
}

}; Combinator.prototype = new Node(); Combinator.prototype.type = “Combinator”; var _noSpaceCombinators = {

'': true,
' ': true,
'|': true

}; Combinator.prototype.genCSS = function (context, output) {

var spaceOrEmpty = (context.compress || _noSpaceCombinators[this.value]) ? '' : ' ';
output.add(spaceOrEmpty + this.value + spaceOrEmpty);

}; module.exports = Combinator;

},{“./node”:70}],52:[function(require,module,exports){ var Node = require(“./node”),

getDebugInfo = require("./debug-info");

var Comment = function (value, isLineComment, index, currentFileInfo) {

this.value = value;
this.isLineComment = isLineComment;
this.currentFileInfo = currentFileInfo;

}; Comment.prototype = new Node(); Comment.prototype.type = “Comment”; Comment.prototype.genCSS = function (context, output) {

if (this.debugInfo) {
    output.add(getDebugInfo(context, this), this.currentFileInfo, this.index);
}
output.add(this.value);

}; Comment.prototype.isSilent = function(context) {

var isCompressed = context.compress && this.value[2] !== "!";
return this.isLineComment || isCompressed;

}; module.exports = Comment;

},{“./debug-info”:54,“./node”:70}],53:[function(require,module,exports){ var Node = require(“./node”);

var Condition = function (op, l, r, i, negate) {

this.op = op.trim();
this.lvalue = l;
this.rvalue = r;
this.index = i;
this.negate = negate;

}; Condition.prototype = new Node(); Condition.prototype.type = “Condition”; Condition.prototype.accept = function (visitor) {

this.lvalue = visitor.visit(this.lvalue);
this.rvalue = visitor.visit(this.rvalue);

}; Condition.prototype.eval = function (context) {

var result = (function (op, a, b) {
    switch (op) {
        case 'and': return a && b;
        case 'or':  return a || b;
        default:
            switch (Node.compare(a, b)) {
                case -1:
                    return op === '<' || op === '=<' || op === '<=';
                case 0:
                    return op === '=' || op === '>=' || op === '=<' || op === '<=';
                case 1:
                    return op === '>' || op === '>=';
                default:
                    return false;
            }
    }
})(this.op, this.lvalue.eval(context), this.rvalue.eval(context));

return this.negate ? !result : result;

}; module.exports = Condition;

},{“./node”:70}],54:[function(require,module,exports){ var debugInfo = function(context, ctx, lineSeparator) {

var result = "";
if (context.dumpLineNumbers && !context.compress) {
    switch(context.dumpLineNumbers) {
        case 'comments':
            result = debugInfo.asComment(ctx);
            break;
        case 'mediaquery':
            result = debugInfo.asMediaQuery(ctx);
            break;
        case 'all':
            result = debugInfo.asComment(ctx) + (lineSeparator || "") + debugInfo.asMediaQuery(ctx);
            break;
    }
}
return result;

};

debugInfo.asComment = function(ctx) {

return '/* line ' + ctx.debugInfo.lineNumber + ', ' + ctx.debugInfo.fileName + ' */\n';

};

debugInfo.asMediaQuery = function(ctx) {

var filenameWithProtocol = ctx.debugInfo.fileName;
if (!/^[a-z]+:\/\//i.test(filenameWithProtocol)) {
    filenameWithProtocol = 'file://' + filenameWithProtocol;
}
return '@media -sass-debug-info{filename{font-family:' +
    filenameWithProtocol.replace(/([.:\/\\])/g, function (a) {
        if (a == '\\') {
            a = '\/';
        }
        return '\\' + a;
    }) +
    '}line{font-family:\\00003' + ctx.debugInfo.lineNumber + '}}\n';

};

module.exports = debugInfo;

},{}],55:[function(require,module,exports){ var Node = require(“./node”),

contexts = require("../contexts");

var DetachedRuleset = function (ruleset, frames) {

this.ruleset = ruleset;
this.frames = frames;

}; DetachedRuleset.prototype = new Node(); DetachedRuleset.prototype.type = “DetachedRuleset”; DetachedRuleset.prototype.evalFirst = true; DetachedRuleset.prototype.accept = function (visitor) {

this.ruleset = visitor.visit(this.ruleset);

}; DetachedRuleset.prototype.eval = function (context) {

var frames = this.frames || context.frames.slice(0);
return new DetachedRuleset(this.ruleset, frames);

}; DetachedRuleset.prototype.callEval = function (context) {

return this.ruleset.eval(this.frames ? new contexts.Eval(context, this.frames.concat(context.frames)) : context);

}; module.exports = DetachedRuleset;

},{“../contexts”:11,“./node”:70}],56:[function(require,module,exports){ var Node = require(“./node”),

unitConversions = require("../data/unit-conversions"),
Unit = require("./unit"),
Color = require("./color");

// // A number with a unit // var Dimension = function (value, unit) {

this.value = parseFloat(value);
this.unit = (unit && unit instanceof Unit) ? unit :
  new Unit(unit ? [unit] : undefined);

};

Dimension.prototype = new Node(); Dimension.prototype.type = “Dimension”; Dimension.prototype.accept = function (visitor) {

this.unit = visitor.visit(this.unit);

}; Dimension.prototype.eval = function (context) {

return this;

}; Dimension.prototype.toColor = function () {

return new Color([this.value, this.value, this.value]);

}; Dimension.prototype.genCSS = function (context, output) {

if ((context && context.strictUnits) && !this.unit.isSingular()) {
    throw new Error("Multiple units in dimension. Correct the units or use the unit function. Bad unit: " + this.unit.toString());
}

var value = this.fround(context, this.value),
    strValue = String(value);

if (value !== 0 && value < 0.000001 && value > -0.000001) {
    // would be output 1e-6 etc.
    strValue = value.toFixed(20).replace(/0+$/, "");
}

if (context && context.compress) {
    // Zero values doesn't need a unit
    if (value === 0 && this.unit.isLength()) {
        output.add(strValue);
        return;
    }

    // Float values doesn't need a leading zero
    if (value > 0 && value < 1) {
        strValue = (strValue).substr(1);
    }
}

output.add(strValue);
this.unit.genCSS(context, output);

};

// In an operation between two Dimensions, // we default to the first Dimension's unit, // so `1px + 2` will yield `3px`. Dimension.prototype.operate = function (context, op, other) {

/*jshint noempty:false */
var value = this._operate(context, op, this.value, other.value),
    unit = this.unit.clone();

if (op === '+' || op === '-') {
    if (unit.numerator.length === 0 && unit.denominator.length === 0) {
        unit = other.unit.clone();
        if (this.unit.backupUnit) {
            unit.backupUnit = this.unit.backupUnit;
        }
    } else if (other.unit.numerator.length === 0 && unit.denominator.length === 0) {
        // do nothing
    } else {
        other = other.convertTo(this.unit.usedUnits());

        if (context.strictUnits && other.unit.toString() !== unit.toString()) {
            throw new Error("Incompatible units. Change the units or use the unit function. Bad units: '" + unit.toString() +
                "' and '" + other.unit.toString() + "'.");
        }

        value = this._operate(context, op, this.value, other.value);
    }
} else if (op === '*') {
    unit.numerator = unit.numerator.concat(other.unit.numerator).sort();
    unit.denominator = unit.denominator.concat(other.unit.denominator).sort();
    unit.cancel();
} else if (op === '/') {
    unit.numerator = unit.numerator.concat(other.unit.denominator).sort();
    unit.denominator = unit.denominator.concat(other.unit.numerator).sort();
    unit.cancel();
}
return new Dimension(value, unit);

}; Dimension.prototype.compare = function (other) {

var a, b;

if (!(other instanceof Dimension)) {
    return undefined;
}

if (this.unit.isEmpty() || other.unit.isEmpty()) {
    a = this;
    b = other;
} else {
    a = this.unify();
    b = other.unify();
    if (a.unit.compare(b.unit) !== 0) {
        return undefined;
    }
}

return Node.numericCompare(a.value, b.value);

}; Dimension.prototype.unify = function () {

return this.convertTo({ length: 'px', duration: 's', angle: 'rad' });

}; Dimension.prototype.convertTo = function (conversions) {

var value = this.value, unit = this.unit.clone(),
    i, groupName, group, targetUnit, derivedConversions = {}, applyUnit;

if (typeof conversions === 'string') {
    for (i in unitConversions) {
        if (unitConversions[i].hasOwnProperty(conversions)) {
            derivedConversions = {};
            derivedConversions[i] = conversions;
        }
    }
    conversions = derivedConversions;
}
applyUnit = function (atomicUnit, denominator) {
    /* jshint loopfunc:true */
    if (group.hasOwnProperty(atomicUnit)) {
        if (denominator) {
            value = value / (group[atomicUnit] / group[targetUnit]);
        } else {
            value = value * (group[atomicUnit] / group[targetUnit]);
        }

        return targetUnit;
    }

    return atomicUnit;
};

for (groupName in conversions) {
    if (conversions.hasOwnProperty(groupName)) {
        targetUnit = conversions[groupName];
        group = unitConversions[groupName];

        unit.map(applyUnit);
    }
}

unit.cancel();

return new Dimension(value, unit);

}; module.exports = Dimension;

},{“../data/unit-conversions”:14,“./color”:50,“./node”:70,“./unit”:79}],57:[function(require,module,exports){ var Node = require(“./node”),

Selector = require("./selector"),
Ruleset = require("./ruleset");

var Directive = function (name, value, rules, index, currentFileInfo, debugInfo, isRooted, visibilityInfo) {

var i;

this.name  = name;
this.value = value;
if (rules) {
    if (Array.isArray(rules)) {
        this.rules = rules;
    } else {
        this.rules = [rules];
        this.rules[0].selectors = (new Selector([], null, null, this.index, currentFileInfo)).createEmptySelectors();
    }
    for (i = 0; i < this.rules.length; i++) {
        this.rules[i].allowImports = true;
    }
}
this.index = index;
this.currentFileInfo = currentFileInfo;
this.debugInfo = debugInfo;
this.isRooted = isRooted || false;
this.copyVisibilityInfo(visibilityInfo);

};

Directive.prototype = new Node(); Directive.prototype.type = “Directive”; Directive.prototype.accept = function (visitor) {

var value = this.value, rules = this.rules;
if (rules) {
    this.rules = visitor.visitArray(rules);
}
if (value) {
    this.value = visitor.visit(value);
}

}; Directive.prototype.isRulesetLike = function() {

return this.rules || !this.isCharset();

}; Directive.prototype.isCharset = function() {

return "@charset" === this.name;

}; Directive.prototype.genCSS = function (context, output) {

var value = this.value, rules = this.rules;
output.add(this.name, this.currentFileInfo, this.index);
if (value) {
    output.add(' ');
    value.genCSS(context, output);
}
if (rules) {
    this.outputRuleset(context, output, rules);
} else {
    output.add(';');
}

}; Directive.prototype.eval = function (context) {

var mediaPathBackup, mediaBlocksBackup, value = this.value, rules = this.rules;

//media stored inside other directive should not bubble over it
//backpup media bubbling information
mediaPathBackup = context.mediaPath;
mediaBlocksBackup = context.mediaBlocks;
//deleted media bubbling information
context.mediaPath = [];
context.mediaBlocks = [];

if (value) {
    value = value.eval(context);
}
if (rules) {
    // assuming that there is only one rule at this point - that is how parser constructs the rule
    rules = [rules[0].eval(context)];
    rules[0].root = true;
}
//restore media bubbling information
context.mediaPath = mediaPathBackup;
context.mediaBlocks = mediaBlocksBackup;

return new Directive(this.name, value, rules,
    this.index, this.currentFileInfo, this.debugInfo, this.isRooted, this.visibilityInfo());

}; Directive.prototype.variable = function (name) {

if (this.rules) {
    // assuming that there is only one rule at this point - that is how parser constructs the rule
    return Ruleset.prototype.variable.call(this.rules[0], name);
}

}; Directive.prototype.find = function () {

if (this.rules) {
    // assuming that there is only one rule at this point - that is how parser constructs the rule
    return Ruleset.prototype.find.apply(this.rules[0], arguments);
}

}; Directive.prototype.rulesets = function () {

if (this.rules) {
    // assuming that there is only one rule at this point - that is how parser constructs the rule
    return Ruleset.prototype.rulesets.apply(this.rules[0]);
}

}; Directive.prototype.outputRuleset = function (context, output, rules) {

var ruleCnt = rules.length, i;
context.tabLevel = (context.tabLevel | 0) + 1;

// Compressed
if (context.compress) {
    output.add('{');
    for (i = 0; i < ruleCnt; i++) {
        rules[i].genCSS(context, output);
    }
    output.add('}');
    context.tabLevel--;
    return;
}

// Non-compressed
var tabSetStr = '\n' + Array(context.tabLevel).join("  "), tabRuleStr = tabSetStr + "  ";
if (!ruleCnt) {
    output.add(" {" + tabSetStr + '}');
} else {
    output.add(" {" + tabRuleStr);
    rules[0].genCSS(context, output);
    for (i = 1; i < ruleCnt; i++) {
        output.add(tabRuleStr);
        rules[i].genCSS(context, output);
    }
    output.add(tabSetStr + '}');
}

context.tabLevel--;

}; module.exports = Directive;

},{“./node”:70,“./ruleset”:76,“./selector”:77}],58:[function(require,module,exports){ var Node = require(“./node”),

Paren = require("./paren"),
Combinator = require("./combinator");

var Element = function (combinator, value, index, currentFileInfo, info) {

this.combinator = combinator instanceof Combinator ?
                  combinator : new Combinator(combinator);

if (typeof value === 'string') {
    this.value = value.trim();
} else if (value) {
    this.value = value;
} else {
    this.value = "";
}
this.index = index;
this.currentFileInfo = currentFileInfo;
this.copyVisibilityInfo(info);

}; Element.prototype = new Node(); Element.prototype.type = “Element”; Element.prototype.accept = function (visitor) {

var value = this.value;
this.combinator = visitor.visit(this.combinator);
if (typeof value === "object") {
    this.value = visitor.visit(value);
}

}; Element.prototype.eval = function (context) {

return new Element(this.combinator,
                         this.value.eval ? this.value.eval(context) : this.value,
                         this.index,
                         this.currentFileInfo, this.visibilityInfo());

}; Element.prototype.clone = function () {

return new Element(this.combinator,
    this.value,
    this.index,
    this.currentFileInfo, this.visibilityInfo());

}; Element.prototype.genCSS = function (context, output) {

output.add(this.toCSS(context), this.currentFileInfo, this.index);

}; Element.prototype.toCSS = function (context) {

context = context || {};
var value = this.value, firstSelector = context.firstSelector;
if (value instanceof Paren) {
    // selector in parens should not be affected by outer selector
    // flags (breaks only interpolated selectors - see #1973)
    context.firstSelector = true;
}
value = value.toCSS ? value.toCSS(context) : value;
context.firstSelector = firstSelector;
if (value === '' && this.combinator.value.charAt(0) === '&') {
    return '';
} else {
    return this.combinator.toCSS(context) + value;
}

}; module.exports = Element;

},{“./combinator”:51,“./node”:70,“./paren”:72}],59:[function(require,module,exports){ var Node = require(“./node”),

Paren = require("./paren"),
Comment = require("./comment");

var Expression = function (value) {

this.value = value;
if (!value) {
    throw new Error("Expression requires an array parameter");
}

}; Expression.prototype = new Node(); Expression.prototype.type = “Expression”; Expression.prototype.accept = function (visitor) {

this.value = visitor.visitArray(this.value);

}; Expression.prototype.eval = function (context) {

var returnValue,
    inParenthesis = this.parens && !this.parensInOp,
    doubleParen = false;
if (inParenthesis) {
    context.inParenthesis();
}
if (this.value.length > 1) {
    returnValue = new Expression(this.value.map(function (e) {
        return e.eval(context);
    }));
} else if (this.value.length === 1) {
    if (this.value[0].parens && !this.value[0].parensInOp) {
        doubleParen = true;
    }
    returnValue = this.value[0].eval(context);
} else {
    returnValue = this;
}
if (inParenthesis) {
    context.outOfParenthesis();
}
if (this.parens && this.parensInOp && !(context.isMathOn()) && !doubleParen) {
    returnValue = new Paren(returnValue);
}
return returnValue;

}; Expression.prototype.genCSS = function (context, output) {

for (var i = 0; i < this.value.length; i++) {
    this.value[i].genCSS(context, output);
    if (i + 1 < this.value.length) {
        output.add(" ");
    }
}

}; Expression.prototype.throwAwayComments = function () {

this.value = this.value.filter(function(v) {
    return !(v instanceof Comment);
});

}; module.exports = Expression;

},{“./comment”:52,“./node”:70,“./paren”:72}],60:[function(require,module,exports){ var Node = require(“./node”),

Selector = require("./selector");

var Extend = function Extend(selector, option, index, currentFileInfo, visibilityInfo) {

this.selector = selector;
this.option = option;
this.index = index;
this.object_id = Extend.next_id++;
this.parent_ids = [this.object_id];
this.currentFileInfo = currentFileInfo || {};
this.copyVisibilityInfo(visibilityInfo);

switch(option) {
    case "all":
        this.allowBefore = true;
        this.allowAfter = true;
        break;
    default:
        this.allowBefore = false;
        this.allowAfter = false;
        break;
}

}; Extend.next_id = 0;

Extend.prototype = new Node(); Extend.prototype.type = “Extend”; Extend.prototype.accept = function (visitor) {

this.selector = visitor.visit(this.selector);

}; Extend.prototype.eval = function (context) {

return new Extend(this.selector.eval(context), this.option, this.index, this.currentFileInfo, this.visibilityInfo());

}; Extend.prototype.clone = function (context) {

return new Extend(this.selector, this.option, this.index, this.currentFileInfo, this.visibilityInfo());

}; //it concatenates (joins) all selectors in selector array Extend.prototype.findSelfSelectors = function (selectors) {

var selfElements = [],
    i,
    selectorElements;

for (i = 0; i < selectors.length; i++) {
    selectorElements = selectors[i].elements;
    // duplicate the logic in genCSS function inside the selector node.
    // future TODO - move both logics into the selector joiner visitor
    if (i > 0 && selectorElements.length && selectorElements[0].combinator.value === "") {
        selectorElements[0].combinator.value = ' ';
    }
    selfElements = selfElements.concat(selectors[i].elements);
}

this.selfSelectors = [new Selector(selfElements)];
this.selfSelectors[0].copyVisibilityInfo(this.visibilityInfo());

}; module.exports = Extend;

},{“./node”:70,“./selector”:77}],61:[function(require,module,exports){ var Node = require(“./node”),

Media = require("./media"),
URL = require("./url"),
Quoted = require("./quoted"),
Ruleset = require("./ruleset"),
Anonymous = require("./anonymous");

// // CSS @import node // // The general strategy here is that we don't want to wait // for the parsing to be completed, before we start importing // the file. That's because in the context of a browser, // most of the time will be spent waiting for the server to respond. // // On creation, we push the import path to our import queue, though // `import,push`, we also pass it a callback, which it'll call once // the file has been fetched, and parsed. // var Import = function (path, features, options, index, currentFileInfo, visibilityInfo) {

this.options = options;
this.index = index;
this.path = path;
this.features = features;
this.currentFileInfo = currentFileInfo;

if (this.options.less !== undefined || this.options.inline) {
    this.css = !this.options.less || this.options.inline;
} else {
    var pathValue = this.getPath();
    if (pathValue && /[#\.\&\?\/]css([\?;].*)?$/.test(pathValue)) {
        this.css = true;
    }
}
this.copyVisibilityInfo(visibilityInfo);

};

// // The actual import node doesn't return anything, when converted to CSS. // The reason is that it's used at the evaluation stage, so that the rules // it imports can be treated like any other rules. // // In `eval`, we make sure all Import nodes get evaluated, recursively, so // we end up with a flat structure, which can easily be imported in the parent // ruleset. // Import.prototype = new Node(); Import.prototype.type = “Import”; Import.prototype.accept = function (visitor) {

if (this.features) {
    this.features = visitor.visit(this.features);
}
this.path = visitor.visit(this.path);
if (!this.options.plugin && !this.options.inline && this.root) {
    this.root = visitor.visit(this.root);
}

}; Import.prototype.genCSS = function (context, output) {

if (this.css && this.path.currentFileInfo.reference === undefined) {
    output.add("@import ", this.currentFileInfo, this.index);
    this.path.genCSS(context, output);
    if (this.features) {
        output.add(" ");
        this.features.genCSS(context, output);
    }
    output.add(';');
}

}; Import.prototype.getPath = function () {

return (this.path instanceof URL) ?
    this.path.value.value : this.path.value;

}; Import.prototype.isVariableImport = function () {

var path = this.path;
if (path instanceof URL) {
    path = path.value;
}
if (path instanceof Quoted) {
    return path.containsVariables();
}

return true;

}; Import.prototype.evalForImport = function (context) {

var path = this.path;

if (path instanceof URL) {
    path = path.value;
}

return new Import(path.eval(context), this.features, this.options, this.index, this.currentFileInfo, this.visibilityInfo());

}; Import.prototype.evalPath = function (context) {

var path = this.path.eval(context);
var rootpath = this.currentFileInfo && this.currentFileInfo.rootpath;

if (!(path instanceof URL)) {
    if (rootpath) {
        var pathValue = path.value;
        // Add the base path if the import is relative
        if (pathValue && context.isPathRelative(pathValue)) {
            path.value = rootpath + pathValue;
        }
    }
    path.value = context.normalizePath(path.value);
}

return path;

}; Import.prototype.eval = function (context) {

var result = this.doEval(context);
if (this.options.reference || this.blocksVisibility()) {
    if (result.length || result.length === 0) {
        result.forEach(function (node) {
                node.addVisibilityBlock();
            }
        );
    } else {
        result.addVisibilityBlock();
    }
}
return result;

}; Import.prototype.doEval = function (context) {

var ruleset, registry,
    features = this.features && this.features.eval(context);

if (this.options.plugin) {
    registry = context.frames[0] && context.frames[0].functionRegistry;
    if ( registry && this.root && this.root.functions ) {
        registry.addMultiple( this.root.functions );
    }
    return [];
}

if (this.skip) {
    if (typeof this.skip === "function") {
        this.skip = this.skip();
    }
    if (this.skip) {
        return [];
    }
}
if (this.options.inline) {
    var contents = new Anonymous(this.root, 0,
      {
          filename: this.importedFilename,
          reference: this.path.currentFileInfo && this.path.currentFileInfo.reference
      }, true, true);

    return this.features ? new Media([contents], this.features.value) : [contents];
} else if (this.css) {
    var newImport = new Import(this.evalPath(context), features, this.options, this.index);
    if (!newImport.css && this.error) {
        throw this.error;
    }
    return newImport;
} else {
    ruleset = new Ruleset(null, this.root.rules.slice(0));
    ruleset.evalImports(context);

    return this.features ? new Media(ruleset.rules, this.features.value) : ruleset.rules;
}

}; module.exports = Import;

},{“./anonymous”:46,“./media”:66,“./node”:70,“./quoted”:73,“./ruleset”:76,“./url”:80}],62:[function(require,module,exports){ var tree = {};

tree.Node = require('./node'); tree.Alpha = require('./alpha'); tree.Color = require('./color'); tree.Directive = require('./directive'); tree.DetachedRuleset = require('./detached-ruleset'); tree.Operation = require('./operation'); tree.Dimension = require('./dimension'); tree.Unit = require('./unit'); tree.Keyword = require('./keyword'); tree.Variable = require('./variable'); tree.Ruleset = require('./ruleset'); tree.Element = require('./element'); tree.Attribute = require('./attribute'); tree.Combinator = require('./combinator'); tree.Selector = require('./selector'); tree.Quoted = require('./quoted'); tree.Expression = require('./expression'); tree.Rule = require('./rule'); tree.Call = require('./call'); tree.URL = require('./url'); tree.Import = require('./import'); tree.mixin = {

Call: require('./mixin-call'),
Definition: require('./mixin-definition')

}; tree.Comment = require('./comment'); tree.Anonymous = require('./anonymous'); tree.Value = require('./value'); tree.JavaScript = require('./javascript'); tree.Assignment = require('./assignment'); tree.Condition = require('./condition'); tree.Paren = require('./paren'); tree.Media = require('./media'); tree.UnicodeDescriptor = require('./unicode-descriptor'); tree.Negative = require('./negative'); tree.Extend = require('./extend'); tree.RulesetCall = require('./ruleset-call');

module.exports = tree;

},{“./alpha”:45,“./anonymous”:46,“./assignment”:47,“./attribute”:48,“./call”:49,“./color”:50,“./combinator”:51,“./comment”:52,“./condition”:53,“./detached-ruleset”:55,“./dimension”:56,“./directive”:57,“./element”:58,“./expression”:59,“./extend”:60,“./import”:61,“./javascript”:63,“./keyword”:65,“./media”:66,“./mixin-call”:67,“./mixin-definition”:68,“./negative”:69,“./node”:70,“./operation”:71,“./paren”:72,“./quoted”:73,“./rule”:74,“./ruleset”:76,“./ruleset-call”:75,“./selector”:77,“./unicode-descriptor”:78,“./unit”:79,“./url”:80,“./value”:81,“./variable”:82}],63:[function(require,module,exports){ var JsEvalNode = require(“./js-eval-node”),

Dimension = require("./dimension"),
Quoted = require("./quoted"),
Anonymous = require("./anonymous");

var JavaScript = function (string, escaped, index, currentFileInfo) {

this.escaped = escaped;
this.expression = string;
this.index = index;
this.currentFileInfo = currentFileInfo;

}; JavaScript.prototype = new JsEvalNode(); JavaScript.prototype.type = “JavaScript”; JavaScript.prototype.eval = function(context) {

var result = this.evaluateJavaScript(this.expression, context);

if (typeof result === 'number') {
    return new Dimension(result);
} else if (typeof result === 'string') {
    return new Quoted('"' + result + '"', result, this.escaped, this.index);
} else if (Array.isArray(result)) {
    return new Anonymous(result.join(', '));
} else {
    return new Anonymous(result);
}

};

module.exports = JavaScript;

},{“./anonymous”:46,“./dimension”:56,“./js-eval-node”:64,“./quoted”:73}],64:[function(require,module,exports){ var Node = require(“./node”),

Variable = require("./variable");

var JsEvalNode = function() { }; JsEvalNode.prototype = new Node();

JsEvalNode.prototype.evaluateJavaScript = function (expression, context) {

var result,
    that = this,
    evalContext = {};

if (context.javascriptEnabled !== undefined && !context.javascriptEnabled) {
    throw { message: "You are using JavaScript, which has been disabled.",
        filename: this.currentFileInfo.filename,
        index: this.index };
}

expression = expression.replace(/@\{([\w-]+)\}/g, function (_, name) {
    return that.jsify(new Variable('@' + name, that.index, that.currentFileInfo).eval(context));
});

try {
    expression = new Function('return (' + expression + ')');
} catch (e) {
    throw { message: "JavaScript evaluation error: " + e.message + " from `" + expression + "`" ,
        filename: this.currentFileInfo.filename,
        index: this.index };
}

var variables = context.frames[0].variables();
for (var k in variables) {
    if (variables.hasOwnProperty(k)) {
        /*jshint loopfunc:true */
        evalContext[k.slice(1)] = {
            value: variables[k].value,
            toJS: function () {
                return this.value.eval(context).toCSS();
            }
        };
    }
}

try {
    result = expression.call(evalContext);
} catch (e) {
    throw { message: "JavaScript evaluation error: '" + e.name + ': ' + e.message.replace(/["]/g, "'") + "'" ,
        filename: this.currentFileInfo.filename,
        index: this.index };
}
return result;

}; JsEvalNode.prototype.jsify = function (obj) {

if (Array.isArray(obj.value) && (obj.value.length > 1)) {
    return '[' + obj.value.map(function (v) { return v.toCSS(); }).join(', ') + ']';
} else {
    return obj.toCSS();
}

};

module.exports = JsEvalNode;

},{“./node”:70,“./variable”:82}],65:[function(require,module,exports){ var Node = require(“./node”);

var Keyword = function (value) { this.value = value; }; Keyword.prototype = new Node(); Keyword.prototype.type = “Keyword”; Keyword.prototype.genCSS = function (context, output) {

if (this.value === '%') { throw { type: "Syntax", message: "Invalid % without number" }; }
output.add(this.value);

};

Keyword.True = new Keyword('true'); Keyword.False = new Keyword('false');

module.exports = Keyword;

},{“./node”:70}],66:[function(require,module,exports){ var Ruleset = require(“./ruleset”),

Value = require("./value"),
Selector = require("./selector"),
Anonymous = require("./anonymous"),
Expression = require("./expression"),
Directive = require("./directive");

var Media = function (value, features, index, currentFileInfo, visibilityInfo) {

this.index = index;
this.currentFileInfo = currentFileInfo;

var selectors = (new Selector([], null, null, this.index, this.currentFileInfo)).createEmptySelectors();

this.features = new Value(features);
this.rules = [new Ruleset(selectors, value)];
this.rules[0].allowImports = true;
this.copyVisibilityInfo(visibilityInfo);

}; Media.prototype = new Directive(); Media.prototype.type = “Media”; Media.prototype.isRulesetLike = true; Media.prototype.accept = function (visitor) {

if (this.features) {
    this.features = visitor.visit(this.features);
}
if (this.rules) {
    this.rules = visitor.visitArray(this.rules);
}

}; Media.prototype.genCSS = function (context, output) {

output.add('@media ', this.currentFileInfo, this.index);
this.features.genCSS(context, output);
this.outputRuleset(context, output, this.rules);

}; Media.prototype.eval = function (context) {

if (!context.mediaBlocks) {
    context.mediaBlocks = [];
    context.mediaPath = [];
}

var media = new Media(null, [], this.index, this.currentFileInfo, this.visibilityInfo());
if (this.debugInfo) {
    this.rules[0].debugInfo = this.debugInfo;
    media.debugInfo = this.debugInfo;
}
var strictMathBypass = false;
if (!context.strictMath) {
    strictMathBypass = true;
    context.strictMath = true;
}
try {
    media.features = this.features.eval(context);
}
finally {
    if (strictMathBypass) {
        context.strictMath = false;
    }
}

context.mediaPath.push(media);
context.mediaBlocks.push(media);

this.rules[0].functionRegistry = context.frames[0].functionRegistry.inherit();
context.frames.unshift(this.rules[0]);
media.rules = [this.rules[0].eval(context)];
context.frames.shift();

context.mediaPath.pop();

return context.mediaPath.length === 0 ? media.evalTop(context) :
            media.evalNested(context);

}; Media.prototype.evalTop = function (context) {

var result = this;

// Render all dependent Media blocks.
if (context.mediaBlocks.length > 1) {
    var selectors = (new Selector([], null, null, this.index, this.currentFileInfo)).createEmptySelectors();
    result = new Ruleset(selectors, context.mediaBlocks);
    result.multiMedia = true;
    result.copyVisibilityInfo(this.visibilityInfo());
}

delete context.mediaBlocks;
delete context.mediaPath;

return result;

}; Media.prototype.evalNested = function (context) {

var i, value,
    path = context.mediaPath.concat([this]);

// Extract the media-query conditions separated with `,` (OR).
for (i = 0; i < path.length; i++) {
    value = path[i].features instanceof Value ?
                path[i].features.value : path[i].features;
    path[i] = Array.isArray(value) ? value : [value];
}

// Trace all permutations to generate the resulting media-query.
//
// (a, b and c) with nested (d, e) ->
//    a and d
//    a and e
//    b and c and d
//    b and c and e
this.features = new Value(this.permute(path).map(function (path) {
    path = path.map(function (fragment) {
        return fragment.toCSS ? fragment : new Anonymous(fragment);
    });

    for (i = path.length - 1; i > 0; i--) {
        path.splice(i, 0, new Anonymous("and"));
    }

    return new Expression(path);
}));

// Fake a tree-node that doesn't output anything.
return new Ruleset([], []);

}; Media.prototype.permute = function (arr) {

if (arr.length === 0) {
    return [];
} else if (arr.length === 1) {
    return arr[0];
} else {
    var result = [];
    var rest = this.permute(arr.slice(1));
    for (var i = 0; i < rest.length; i++) {
        for (var j = 0; j < arr[0].length; j++) {
            result.push([arr[0][j]].concat(rest[i]));
        }
    }
    return result;
}

}; Media.prototype.bubbleSelectors = function (selectors) {

if (!selectors) {
    return;
}
this.rules = [new Ruleset(selectors.slice(0), [this.rules[0]])];

}; module.exports = Media;

},{“./anonymous”:46,“./directive”:57,“./expression”:59,“./ruleset”:76,“./selector”:77,“./value”:81}],67:[function(require,module,exports){ var Node = require(“./node”),

Selector = require("./selector"),
MixinDefinition = require("./mixin-definition"),
defaultFunc = require("../functions/default");

var MixinCall = function (elements, args, index, currentFileInfo, important) {

this.selector = new Selector(elements);
this.arguments = args || [];
this.index = index;
this.currentFileInfo = currentFileInfo;
this.important = important;

}; MixinCall.prototype = new Node(); MixinCall.prototype.type = “MixinCall”; MixinCall.prototype.accept = function (visitor) {

if (this.selector) {
    this.selector = visitor.visit(this.selector);
}
if (this.arguments.length) {
    this.arguments = visitor.visitArray(this.arguments);
}

}; MixinCall.prototype.eval = function (context) {

var mixins, mixin, mixinPath, args = [], arg, argValue,
    rules = [], match = false, i, m, f, isRecursive, isOneFound,
    candidates = [], candidate, conditionResult = [], defaultResult, defFalseEitherCase = -1,
    defNone = 0, defTrue = 1, defFalse = 2, count, originalRuleset, noArgumentsFilter;

function calcDefGroup(mixin, mixinPath) {
    var f, p, namespace;

    for (f = 0; f < 2; f++) {
        conditionResult[f] = true;
        defaultFunc.value(f);
        for (p = 0; p < mixinPath.length && conditionResult[f]; p++) {
            namespace = mixinPath[p];
            if (namespace.matchCondition) {
                conditionResult[f] = conditionResult[f] && namespace.matchCondition(null, context);
            }
        }
        if (mixin.matchCondition) {
            conditionResult[f] = conditionResult[f] && mixin.matchCondition(args, context);
        }
    }
    if (conditionResult[0] || conditionResult[1]) {
        if (conditionResult[0] != conditionResult[1]) {
            return conditionResult[1] ?
                defTrue : defFalse;
        }

        return defNone;
    }
    return defFalseEitherCase;
}

for (i = 0; i < this.arguments.length; i++) {
    arg = this.arguments[i];
    argValue = arg.value.eval(context);
    if (arg.expand && Array.isArray(argValue.value)) {
        argValue = argValue.value;
        for (m = 0; m < argValue.length; m++) {
            args.push({value: argValue[m]});
        }
    } else {
        args.push({name: arg.name, value: argValue});
    }
}

noArgumentsFilter = function(rule) {return rule.matchArgs(null, context);};

for (i = 0; i < context.frames.length; i++) {
    if ((mixins = context.frames[i].find(this.selector, null, noArgumentsFilter)).length > 0) {
        isOneFound = true;

        // To make `default()` function independent of definition order we have two "subpasses" here.
        // At first we evaluate each guard *twice* (with `default() == true` and `default() == false`),
        // and build candidate list with corresponding flags. Then, when we know all possible matches,
        // we make a final decision.

        for (m = 0; m < mixins.length; m++) {
            mixin = mixins[m].rule;
            mixinPath = mixins[m].path;
            isRecursive = false;
            for (f = 0; f < context.frames.length; f++) {
                if ((!(mixin instanceof MixinDefinition)) && mixin === (context.frames[f].originalRuleset || context.frames[f])) {
                    isRecursive = true;
                    break;
                }
            }
            if (isRecursive) {
                continue;
            }

            if (mixin.matchArgs(args, context)) {
                candidate = {mixin: mixin, group: calcDefGroup(mixin, mixinPath)};

                if (candidate.group !== defFalseEitherCase) {
                    candidates.push(candidate);
                }

                match = true;
            }
        }

        defaultFunc.reset();

        count = [0, 0, 0];
        for (m = 0; m < candidates.length; m++) {
            count[candidates[m].group]++;
        }

        if (count[defNone] > 0) {
            defaultResult = defFalse;
        } else {
            defaultResult = defTrue;
            if ((count[defTrue] + count[defFalse]) > 1) {
                throw { type: 'Runtime',
                    message: 'Ambiguous use of `default()` found when matching for `' + this.format(args) + '`',
                    index: this.index, filename: this.currentFileInfo.filename };
            }
        }

        for (m = 0; m < candidates.length; m++) {
            candidate = candidates[m].group;
            if ((candidate === defNone) || (candidate === defaultResult)) {
                try {
                    mixin = candidates[m].mixin;
                    if (!(mixin instanceof MixinDefinition)) {
                        originalRuleset = mixin.originalRuleset || mixin;
                        mixin = new MixinDefinition("", [], mixin.rules, null, false, null, originalRuleset.visibilityInfo());
                        mixin.originalRuleset = originalRuleset;
                    }
                    var newRules = mixin.evalCall(context, args, this.important).rules;
                    this._setVisibilityToReplacement(newRules);
                    Array.prototype.push.apply(rules, newRules);
                } catch (e) {
                    throw { message: e.message, index: this.index, filename: this.currentFileInfo.filename, stack: e.stack };
                }
            }
        }

        if (match) {
            return rules;
        }
    }
}
if (isOneFound) {
    throw { type:    'Runtime',
        message: 'No matching definition was found for `' + this.format(args) + '`',
        index:   this.index, filename: this.currentFileInfo.filename };
} else {
    throw { type:    'Name',
        message: this.selector.toCSS().trim() + " is undefined",
        index:   this.index, filename: this.currentFileInfo.filename };
}

};

MixinCall.prototype._setVisibilityToReplacement = function (replacement) {

var i, rule;
if (this.blocksVisibility()) {
    for (i = 0; i < replacement.length; i++) {
        rule = replacement[i];
        rule.addVisibilityBlock();
    }
}

}; MixinCall.prototype.format = function (args) {

return this.selector.toCSS().trim() + '(' +
    (args ? args.map(function (a) {
        var argValue = "";
        if (a.name) {
            argValue += a.name + ":";
        }
        if (a.value.toCSS) {
            argValue += a.value.toCSS();
        } else {
            argValue += "???";
        }
        return argValue;
    }).join(', ') : "") + ")";

}; module.exports = MixinCall;

},{“../functions/default”:20,“./mixin-definition”:68,“./node”:70,“./selector”:77}],68:[function(require,module,exports){ var Selector = require(“./selector”),

Element = require("./element"),
Ruleset = require("./ruleset"),
Rule = require("./rule"),
Expression = require("./expression"),
contexts = require("../contexts");

var Definition = function (name, params, rules, condition, variadic, frames, visibilityInfo) {

this.name = name;
this.selectors = [new Selector([new Element(null, name, this.index, this.currentFileInfo)])];
this.params = params;
this.condition = condition;
this.variadic = variadic;
this.arity = params.length;
this.rules = rules;
this._lookups = {};
var optionalParameters = [];
this.required = params.reduce(function (count, p) {
    if (!p.name || (p.name && !p.value)) {
        return count + 1;
    }
    else {
        optionalParameters.push(p.name);
        return count;
    }
}, 0);
this.optionalParameters = optionalParameters;
this.frames = frames;
this.copyVisibilityInfo(visibilityInfo);

}; Definition.prototype = new Ruleset(); Definition.prototype.type = “MixinDefinition”; Definition.prototype.evalFirst = true; Definition.prototype.accept = function (visitor) {

if (this.params && this.params.length) {
    this.params = visitor.visitArray(this.params);
}
this.rules = visitor.visitArray(this.rules);
if (this.condition) {
    this.condition = visitor.visit(this.condition);
}

}; Definition.prototype.evalParams = function (context, mixinEnv, args, evaldArguments) {

/*jshint boss:true */
var frame = new Ruleset(null, null),
    varargs, arg,
    params = this.params.slice(0),
    i, j, val, name, isNamedFound, argIndex, argsLength = 0;

if (mixinEnv.frames && mixinEnv.frames[0] && mixinEnv.frames[0].functionRegistry) {
    frame.functionRegistry = mixinEnv.frames[0].functionRegistry.inherit();
}
mixinEnv = new contexts.Eval(mixinEnv, [frame].concat(mixinEnv.frames));

if (args) {
    args = args.slice(0);
    argsLength = args.length;

    for (i = 0; i < argsLength; i++) {
        arg = args[i];
        if (name = (arg && arg.name)) {
            isNamedFound = false;
            for (j = 0; j < params.length; j++) {
                if (!evaldArguments[j] && name === params[j].name) {
                    evaldArguments[j] = arg.value.eval(context);
                    frame.prependRule(new Rule(name, arg.value.eval(context)));
                    isNamedFound = true;
                    break;
                }
            }
            if (isNamedFound) {
                args.splice(i, 1);
                i--;
                continue;
            } else {
                throw { type: 'Runtime', message: "Named argument for " + this.name +
                    ' ' + args[i].name + ' not found' };
            }
        }
    }
}
argIndex = 0;
for (i = 0; i < params.length; i++) {
    if (evaldArguments[i]) { continue; }

    arg = args && args[argIndex];

    if (name = params[i].name) {
        if (params[i].variadic) {
            varargs = [];
            for (j = argIndex; j < argsLength; j++) {
                varargs.push(args[j].value.eval(context));
            }
            frame.prependRule(new Rule(name, new Expression(varargs).eval(context)));
        } else {
            val = arg && arg.value;
            if (val) {
                val = val.eval(context);
            } else if (params[i].value) {
                val = params[i].value.eval(mixinEnv);
                frame.resetCache();
            } else {
                throw { type: 'Runtime', message: "wrong number of arguments for " + this.name +
                    ' (' + argsLength + ' for ' + this.arity + ')' };
            }

            frame.prependRule(new Rule(name, val));
            evaldArguments[i] = val;
        }
    }

    if (params[i].variadic && args) {
        for (j = argIndex; j < argsLength; j++) {
            evaldArguments[j] = args[j].value.eval(context);
        }
    }
    argIndex++;
}

return frame;

}; Definition.prototype.makeImportant = function() {

var rules = !this.rules ? this.rules : this.rules.map(function (r) {
    if (r.makeImportant) {
        return r.makeImportant(true);
    } else {
        return r;
    }
});
var result = new Definition (this.name, this.params, rules, this.condition, this.variadic, this.frames);
return result;

}; Definition.prototype.eval = function (context) {

return new Definition(this.name, this.params, this.rules, this.condition, this.variadic, this.frames || context.frames.slice(0));

}; Definition.prototype.evalCall = function (context, args, important) {

var _arguments = [],
    mixinFrames = this.frames ? this.frames.concat(context.frames) : context.frames,
    frame = this.evalParams(context, new contexts.Eval(context, mixinFrames), args, _arguments),
    rules, ruleset;

frame.prependRule(new Rule('@arguments', new Expression(_arguments).eval(context)));

rules = this.rules.slice(0);

ruleset = new Ruleset(null, rules);
ruleset.originalRuleset = this;
ruleset = ruleset.eval(new contexts.Eval(context, [this, frame].concat(mixinFrames)));
if (important) {
    ruleset = ruleset.makeImportant();
}
return ruleset;

}; Definition.prototype.matchCondition = function (args, context) {

if (this.condition && !this.condition.eval(
    new contexts.Eval(context,
        [this.evalParams(context, /* the parameter variables*/
            new contexts.Eval(context, this.frames ? this.frames.concat(context.frames) : context.frames), args, [])]
        .concat(this.frames || []) // the parent namespace/mixin frames
        .concat(context.frames)))) { // the current environment frames
    return false;
}
return true;

}; Definition.prototype.matchArgs = function (args, context) {

var allArgsCnt = (args && args.length) || 0, len, optionalParameters = this.optionalParameters;
var requiredArgsCnt = !args ? 0 : args.reduce(function (count, p) {
    if (optionalParameters.indexOf(p.name) < 0) {
        return count + 1;
    } else {
        return count;
    }
}, 0);

if (! this.variadic) {
    if (requiredArgsCnt < this.required) {
        return false;
    }
    if (allArgsCnt > this.params.length) {
        return false;
    }
} else {
    if (requiredArgsCnt < (this.required - 1)) {
        return false;
    }
}

// check patterns
len = Math.min(requiredArgsCnt, this.arity);

for (var i = 0; i < len; i++) {
    if (!this.params[i].name && !this.params[i].variadic) {
        if (args[i].value.eval(context).toCSS() != this.params[i].value.eval(context).toCSS()) {
            return false;
        }
    }
}
return true;

}; module.exports = Definition;

},{“../contexts”:11,“./element”:58,“./expression”:59,“./rule”:74,“./ruleset”:76,“./selector”:77}],69:[function(require,module,exports){ var Node = require(“./node”),

Operation = require("./operation"),
Dimension = require("./dimension");

var Negative = function (node) {

this.value = node;

}; Negative.prototype = new Node(); Negative.prototype.type = “Negative”; Negative.prototype.genCSS = function (context, output) {

output.add('-');
this.value.genCSS(context, output);

}; Negative.prototype.eval = function (context) {

if (context.isMathOn()) {
    return (new Operation('*', [new Dimension(-1), this.value])).eval(context);
}
return new Negative(this.value.eval(context));

}; module.exports = Negative;

},{“./dimension”:56,“./node”:70,“./operation”:71}],70:[function(require,module,exports){ var Node = function() { }; Node.prototype.toCSS = function (context) {

var strs = [];
this.genCSS(context, {
    add: function(chunk, fileInfo, index) {
        strs.push(chunk);
    },
    isEmpty: function () {
        return strs.length === 0;
    }
});
return strs.join('');

}; Node.prototype.genCSS = function (context, output) {

output.add(this.value);

}; Node.prototype.accept = function (visitor) {

this.value = visitor.visit(this.value);

}; Node.prototype.eval = function () { return this; }; Node.prototype._operate = function (context, op, a, b) {

switch (op) {
    case '+': return a + b;
    case '-': return a - b;
    case '*': return a * b;
    case '/': return a / b;
}

}; Node.prototype.fround = function(context, value) {

var precision = context && context.numPrecision;
//add "epsilon" to ensure numbers like 1.000000005 (represented as 1.000000004999....) are properly rounded...
return (precision == null) ? value : Number((value + 2e-16).toFixed(precision));

}; Node.compare = function (a, b) {

/* returns:
 -1: a < b
 0: a = b
 1: a > b
 and *any* other value for a != b (e.g. undefined, NaN, -2 etc.) */

if ((a.compare) &&
    // for "symmetric results" force toCSS-based comparison
    // of Quoted or Anonymous if either value is one of those
    !(b.type === "Quoted" || b.type === "Anonymous")) {
    return a.compare(b);
} else if (b.compare) {
    return -b.compare(a);
} else if (a.type !== b.type) {
    return undefined;
}

a = a.value;
b = b.value;
if (!Array.isArray(a)) {
    return a === b ? 0 : undefined;
}
if (a.length !== b.length) {
    return undefined;
}
for (var i = 0; i < a.length; i++) {
    if (Node.compare(a[i], b[i]) !== 0) {
        return undefined;
    }
}
return 0;

};

Node.numericCompare = function (a, b) {

return a  <  b ? -1
    : a === b ?  0
    : a  >  b ?  1 : undefined;

}; // Returns true if this node represents root of ast imported by reference Node.prototype.blocksVisibility = function () {

if (this.visibilityBlocks == null) {
    this.visibilityBlocks = 0;
}
return this.visibilityBlocks !== 0;

}; Node.prototype.addVisibilityBlock = function () {

if (this.visibilityBlocks == null) {
    this.visibilityBlocks = 0;
}
this.visibilityBlocks = this.visibilityBlocks + 1;

}; Node.prototype.removeVisibilityBlock = function () {

if (this.visibilityBlocks == null) {
    this.visibilityBlocks = 0;
}
this.visibilityBlocks = this.visibilityBlocks - 1;

}; //Turns on node visibility - if called node will be shown in output regardless //of whether it comes from import by reference or not Node.prototype.ensureVisibility = function () {

this.nodeVisible = true;

}; //Turns off node visibility - if called node will NOT be shown in output regardless //of whether it comes from import by reference or not Node.prototype.ensureInvisibility = function () {

this.nodeVisible = false;

}; // return values: // false - the node must not be visible // true - the node must be visible // undefined or null - the node has the same visibility as its parent Node.prototype.isVisible = function () {

return this.nodeVisible;

}; Node.prototype.visibilityInfo = function() {

return {
    visibilityBlocks: this.visibilityBlocks,
    nodeVisible: this.nodeVisible
};

}; Node.prototype.copyVisibilityInfo = function(info) {

if (!info) {
    return;
}
this.visibilityBlocks = info.visibilityBlocks;
this.nodeVisible = info.nodeVisible;

}; module.exports = Node;

},{}],71:[function(require,module,exports){ var Node = require(“./node”),

Color = require("./color"),
Dimension = require("./dimension");

var Operation = function (op, operands, isSpaced) {

this.op = op.trim();
this.operands = operands;
this.isSpaced = isSpaced;

}; Operation.prototype = new Node(); Operation.prototype.type = “Operation”; Operation.prototype.accept = function (visitor) {

this.operands = visitor.visit(this.operands);

}; Operation.prototype.eval = function (context) {

var a = this.operands[0].eval(context),
    b = this.operands[1].eval(context);

if (context.isMathOn()) {
    if (a instanceof Dimension && b instanceof Color) {
        a = a.toColor();
    }
    if (b instanceof Dimension && a instanceof Color) {
        b = b.toColor();
    }
    if (!a.operate) {
        throw { type: "Operation",
                message: "Operation on an invalid type" };
    }

    return a.operate(context, this.op, b);
} else {
    return new Operation(this.op, [a, b], this.isSpaced);
}

}; Operation.prototype.genCSS = function (context, output) {

this.operands[0].genCSS(context, output);
if (this.isSpaced) {
    output.add(" ");
}
output.add(this.op);
if (this.isSpaced) {
    output.add(" ");
}
this.operands[1].genCSS(context, output);

};

module.exports = Operation;

},{“./color”:50,“./dimension”:56,“./node”:70}],72:[function(require,module,exports){ var Node = require(“./node”);

var Paren = function (node) {

this.value = node;

}; Paren.prototype = new Node(); Paren.prototype.type = “Paren”; Paren.prototype.genCSS = function (context, output) {

output.add('(');
this.value.genCSS(context, output);
output.add(')');

}; Paren.prototype.eval = function (context) {

return new Paren(this.value.eval(context));

}; module.exports = Paren;

},{“./node”:70}],73:[function(require,module,exports){ var Node = require(“./node”),

JsEvalNode = require("./js-eval-node"),
Variable = require("./variable");

var Quoted = function (str, content, escaped, index, currentFileInfo) {

this.escaped = (escaped == null) ? true : escaped;
this.value = content || '';
this.quote = str.charAt(0);
this.index = index;
this.currentFileInfo = currentFileInfo;

}; Quoted.prototype = new JsEvalNode(); Quoted.prototype.type = “Quoted”; Quoted.prototype.genCSS = function (context, output) {

if (!this.escaped) {
    output.add(this.quote, this.currentFileInfo, this.index);
}
output.add(this.value);
if (!this.escaped) {
    output.add(this.quote);
}

}; Quoted.prototype.containsVariables = function() {

return this.value.match(/(`([^`]+)`)|@\{([\w-]+)\}/);

}; Quoted.prototype.eval = function (context) {

var that = this, value = this.value;
var javascriptReplacement = function (_, exp) {
    return String(that.evaluateJavaScript(exp, context));
};
var interpolationReplacement = function (_, name) {
    var v = new Variable('@' + name, that.index, that.currentFileInfo).eval(context, true);
    return (v instanceof Quoted) ? v.value : v.toCSS();
};
function iterativeReplace(value, regexp, replacementFnc) {
    var evaluatedValue = value;
    do {
        value = evaluatedValue;
        evaluatedValue = value.replace(regexp, replacementFnc);
    } while (value !== evaluatedValue);
    return evaluatedValue;
}
value = iterativeReplace(value, /`([^`]+)`/g, javascriptReplacement);
value = iterativeReplace(value, /@\{([\w-]+)\}/g, interpolationReplacement);
return new Quoted(this.quote + value + this.quote, value, this.escaped, this.index, this.currentFileInfo);

}; Quoted.prototype.compare = function (other) {

// when comparing quoted strings allow the quote to differ
if (other.type === "Quoted" && !this.escaped && !other.escaped) {
    return Node.numericCompare(this.value, other.value);
} else {
    return other.toCSS && this.toCSS() === other.toCSS() ? 0 : undefined;
}

}; module.exports = Quoted;

},{“./js-eval-node”:64,“./node”:70,“./variable”:82}],74:[function(require,module,exports){ var Node = require(“./node”),

Value = require("./value"),
Keyword = require("./keyword");

var Rule = function (name, value, important, merge, index, currentFileInfo, inline, variable) {

this.name = name;
this.value = (value instanceof Node) ? value : new Value([value]); //value instanceof tree.Value || value instanceof tree.Ruleset ??
this.important = important ? ' ' + important.trim() : '';
this.merge = merge;
this.index = index;
this.currentFileInfo = currentFileInfo;
this.inline = inline || false;
this.variable = (variable !== undefined) ? variable
    : (name.charAt && (name.charAt(0) === '@'));

};

function evalName(context, name) {

var value = "", i, n = name.length,
    output = {add: function (s) {value += s;}};
for (i = 0; i < n; i++) {
    name[i].eval(context).genCSS(context, output);
}
return value;

}

Rule.prototype = new Node(); Rule.prototype.type = “Rule”; Rule.prototype.genCSS = function (context, output) {

output.add(this.name + (context.compress ? ':' : ': '), this.currentFileInfo, this.index);
try {
    this.value.genCSS(context, output);
}
catch(e) {
    e.index = this.index;
    e.filename = this.currentFileInfo.filename;
    throw e;
}
output.add(this.important + ((this.inline || (context.lastRule && context.compress)) ? "" : ";"), this.currentFileInfo, this.index);

}; Rule.prototype.eval = function (context) {

var strictMathBypass = false, name = this.name, evaldValue, variable = this.variable;
if (typeof name !== "string") {
    // expand 'primitive' name directly to get
    // things faster (~10% for benchmark.less):
    name = (name.length === 1) && (name[0] instanceof Keyword) ?
            name[0].value : evalName(context, name);
    variable = false; // never treat expanded interpolation as new variable name
}
if (name === "font" && !context.strictMath) {
    strictMathBypass = true;
    context.strictMath = true;
}
try {
    context.importantScope.push({});
    evaldValue = this.value.eval(context);

    if (!this.variable && evaldValue.type === "DetachedRuleset") {
        throw { message: "Rulesets cannot be evaluated on a property.",
                index: this.index, filename: this.currentFileInfo.filename };
    }
    var important = this.important,
        importantResult = context.importantScope.pop();
    if (!important && importantResult.important) {
        important = importantResult.important;
    }

    return new Rule(name,
                      evaldValue,
                      important,
                      this.merge,
                      this.index, this.currentFileInfo, this.inline,
                          variable);
}
catch(e) {
    if (typeof e.index !== 'number') {
        e.index = this.index;
        e.filename = this.currentFileInfo.filename;
    }
    throw e;
}
finally {
    if (strictMathBypass) {
        context.strictMath = false;
    }
}

}; Rule.prototype.makeImportant = function () {

return new Rule(this.name,
                      this.value,
                      "!important",
                      this.merge,
                      this.index, this.currentFileInfo, this.inline);

};

module.exports = Rule; },{“./keyword”:65,“./node”:70,“./value”:81}],75:[function(require,module,exports){ var Node = require(“./node”),

Variable = require("./variable");

var RulesetCall = function (variable) {

this.variable = variable;

}; RulesetCall.prototype = new Node(); RulesetCall.prototype.type = “RulesetCall”; RulesetCall.prototype.eval = function (context) {

var detachedRuleset = new Variable(this.variable).eval(context);
return detachedRuleset.callEval(context);

}; module.exports = RulesetCall;

},{“./node”:70,“./variable”:82}],76:[function(require,module,exports){ var Node = require(“./node”),

Rule = require("./rule"),
Selector = require("./selector"),
Element = require("./element"),
Paren = require("./paren"),
contexts = require("../contexts"),
globalFunctionRegistry = require("../functions/function-registry"),
defaultFunc = require("../functions/default"),
getDebugInfo = require("./debug-info");

var Ruleset = function (selectors, rules, strictImports, visibilityInfo) {

this.selectors = selectors;
this.rules = rules;
this._lookups = {};
this.strictImports = strictImports;
this.copyVisibilityInfo(visibilityInfo);

}; Ruleset.prototype = new Node(); Ruleset.prototype.type = “Ruleset”; Ruleset.prototype.isRuleset = true; Ruleset.prototype.isRulesetLike = true; Ruleset.prototype.accept = function (visitor) {

if (this.paths) {
    this.paths = visitor.visitArray(this.paths, true);
} else if (this.selectors) {
    this.selectors = visitor.visitArray(this.selectors);
}
if (this.rules && this.rules.length) {
    this.rules = visitor.visitArray(this.rules);
}

}; Ruleset.prototype.eval = function (context) {

var thisSelectors = this.selectors, selectors,
    selCnt, selector, i, hasOnePassingSelector = false;

if (thisSelectors && (selCnt = thisSelectors.length)) {
    selectors = [];
    defaultFunc.error({
        type: "Syntax",
        message: "it is currently only allowed in parametric mixin guards,"
    });
    for (i = 0; i < selCnt; i++) {
        selector = thisSelectors[i].eval(context);
        selectors.push(selector);
        if (selector.evaldCondition) {
            hasOnePassingSelector = true;
        }
    }
    defaultFunc.reset();
} else {
    hasOnePassingSelector = true;
}

var rules = this.rules ? this.rules.slice(0) : null,
    ruleset = new Ruleset(selectors, rules, this.strictImports, this.visibilityInfo()),
    rule, subRule;

ruleset.originalRuleset = this;
ruleset.root = this.root;
ruleset.firstRoot = this.firstRoot;
ruleset.allowImports = this.allowImports;

if (this.debugInfo) {
    ruleset.debugInfo = this.debugInfo;
}

if (!hasOnePassingSelector) {
    rules.length = 0;
}

// inherit a function registry from the frames stack when possible;
// otherwise from the global registry
ruleset.functionRegistry = (function (frames) {
    var i = 0,
        n = frames.length,
        found;
    for ( ; i !== n ; ++i ) {
        found = frames[ i ].functionRegistry;
        if ( found ) { return found; }
    }
    return globalFunctionRegistry;
}(context.frames)).inherit();

// push the current ruleset to the frames stack
var ctxFrames = context.frames;
ctxFrames.unshift(ruleset);

// currrent selectors
var ctxSelectors = context.selectors;
if (!ctxSelectors) {
    context.selectors = ctxSelectors = [];
}
ctxSelectors.unshift(this.selectors);

// Evaluate imports
if (ruleset.root || ruleset.allowImports || !ruleset.strictImports) {
    ruleset.evalImports(context);
}

// Store the frames around mixin definitions,
// so they can be evaluated like closures when the time comes.
var rsRules = ruleset.rules, rsRuleCnt = rsRules ? rsRules.length : 0;
for (i = 0; i < rsRuleCnt; i++) {
    if (rsRules[i].evalFirst) {
        rsRules[i] = rsRules[i].eval(context);
    }
}

var mediaBlockCount = (context.mediaBlocks && context.mediaBlocks.length) || 0;

// Evaluate mixin calls.
for (i = 0; i < rsRuleCnt; i++) {
    if (rsRules[i].type === "MixinCall") {
        /*jshint loopfunc:true */
        rules = rsRules[i].eval(context).filter(function(r) {
            if ((r instanceof Rule) && r.variable) {
                // do not pollute the scope if the variable is
                // already there. consider returning false here
                // but we need a way to "return" variable from mixins
                return !(ruleset.variable(r.name));
            }
            return true;
        });
        rsRules.splice.apply(rsRules, [i, 1].concat(rules));
        rsRuleCnt += rules.length - 1;
        i += rules.length - 1;
        ruleset.resetCache();
    } else if (rsRules[i].type === "RulesetCall") {
        /*jshint loopfunc:true */
        rules = rsRules[i].eval(context).rules.filter(function(r) {
            if ((r instanceof Rule) && r.variable) {
                // do not pollute the scope at all
                return false;
            }
            return true;
        });
        rsRules.splice.apply(rsRules, [i, 1].concat(rules));
        rsRuleCnt += rules.length - 1;
        i += rules.length - 1;
        ruleset.resetCache();
    }
}

// Evaluate everything else
for (i = 0; i < rsRules.length; i++) {
    rule = rsRules[i];
    if (!rule.evalFirst) {
        rsRules[i] = rule = rule.eval ? rule.eval(context) : rule;
    }
}

// Evaluate everything else
for (i = 0; i < rsRules.length; i++) {
    rule = rsRules[i];
    // for rulesets, check if it is a css guard and can be removed
    if (rule instanceof Ruleset && rule.selectors && rule.selectors.length === 1) {
        // check if it can be folded in (e.g. & where)
        if (rule.selectors[0].isJustParentSelector()) {
            rsRules.splice(i--, 1);

            for (var j = 0; j < rule.rules.length; j++) {
                subRule = rule.rules[j];
                subRule.copyVisibilityInfo(rule.visibilityInfo());
                if (!(subRule instanceof Rule) || !subRule.variable) {
                    rsRules.splice(++i, 0, subRule);
                }
            }
        }
    }
}

// Pop the stack
ctxFrames.shift();
ctxSelectors.shift();

if (context.mediaBlocks) {
    for (i = mediaBlockCount; i < context.mediaBlocks.length; i++) {
        context.mediaBlocks[i].bubbleSelectors(selectors);
    }
}

return ruleset;

}; Ruleset.prototype.evalImports = function(context) {

var rules = this.rules, i, importRules;
if (!rules) { return; }

for (i = 0; i < rules.length; i++) {
    if (rules[i].type === "Import") {
        importRules = rules[i].eval(context);
        if (importRules && (importRules.length || importRules.length === 0)) {
            rules.splice.apply(rules, [i, 1].concat(importRules));
            i+= importRules.length - 1;
        } else {
            rules.splice(i, 1, importRules);
        }
        this.resetCache();
    }
}

}; Ruleset.prototype.makeImportant = function() {

var result = new Ruleset(this.selectors, this.rules.map(function (r) {
    if (r.makeImportant) {
        return r.makeImportant();
    } else {
        return r;
    }
}), this.strictImports, this.visibilityInfo());

return result;

}; Ruleset.prototype.matchArgs = function (args) {

return !args || args.length === 0;

}; // lets you call a css selector with a guard Ruleset.prototype.matchCondition = function (args, context) {

var lastSelector = this.selectors[this.selectors.length - 1];
if (!lastSelector.evaldCondition) {
    return false;
}
if (lastSelector.condition &&
    !lastSelector.condition.eval(
        new contexts.Eval(context,
            context.frames))) {
    return false;
}
return true;

}; Ruleset.prototype.resetCache = function () {

this._rulesets = null;
this._variables = null;
this._lookups = {};

}; Ruleset.prototype.variables = function () {

if (!this._variables) {
    this._variables = !this.rules ? {} : this.rules.reduce(function (hash, r) {
        if (r instanceof Rule && r.variable === true) {
            hash[r.name] = r;
        }
        // when evaluating variables in an import statement, imports have not been eval'd
        // so we need to go inside import statements.
        // guard against root being a string (in the case of inlined less)
        if (r.type === "Import" && r.root && r.root.variables) {
            var vars = r.root.variables();
            for (var name in vars) {
                if (vars.hasOwnProperty(name)) {
                    hash[name] = vars[name];
                }
            }
        }
        return hash;
    }, {});
}
return this._variables;

}; Ruleset.prototype.variable = function (name) {

return this.variables()[name];

}; Ruleset.prototype.rulesets = function () {

if (!this.rules) { return []; }

var filtRules = [], rules = this.rules, cnt = rules.length,
    i, rule;

for (i = 0; i < cnt; i++) {
    rule = rules[i];
    if (rule.isRuleset) {
        filtRules.push(rule);
    }
}

return filtRules;

}; Ruleset.prototype.prependRule = function (rule) {

var rules = this.rules;
if (rules) {
    rules.unshift(rule);
} else {
    this.rules = [ rule ];
}

}; Ruleset.prototype.find = function (selector, self, filter) {

self = self || this;
var rules = [], match, foundMixins,
    key = selector.toCSS();

if (key in this._lookups) { return this._lookups[key]; }

this.rulesets().forEach(function (rule) {
    if (rule !== self) {
        for (var j = 0; j < rule.selectors.length; j++) {
            match = selector.match(rule.selectors[j]);
            if (match) {
                if (selector.elements.length > match) {
                    if (!filter || filter(rule)) {
                        foundMixins = rule.find(new Selector(selector.elements.slice(match)), self, filter);
                        for (var i = 0; i < foundMixins.length; ++i) {
                            foundMixins[i].path.push(rule);
                        }
                        Array.prototype.push.apply(rules, foundMixins);
                    }
                } else {
                    rules.push({ rule: rule, path: []});
                }
                break;
            }
        }
    }
});
this._lookups[key] = rules;
return rules;

}; Ruleset.prototype.genCSS = function (context, output) {

var i, j,
    charsetRuleNodes = [],
    ruleNodes = [],
    debugInfo,     // Line number debugging
    rule,
    path;

context.tabLevel = (context.tabLevel || 0);

if (!this.root) {
    context.tabLevel++;
}

var tabRuleStr = context.compress ? '' : Array(context.tabLevel + 1).join("  "),
    tabSetStr = context.compress ? '' : Array(context.tabLevel).join("  "),
    sep;

function isRulesetLikeNode(rule) {
    // if it has nested rules, then it should be treated like a ruleset
    // medias and comments do not have nested rules, but should be treated like rulesets anyway
    // some directives and anonymous nodes are ruleset like, others are not
    if (typeof rule.isRulesetLike === "boolean") {
        return rule.isRulesetLike;
    } else if (typeof rule.isRulesetLike === "function") {
        return rule.isRulesetLike();
    }

    //anything else is assumed to be a rule
    return false;
}

var charsetNodeIndex = 0;
var importNodeIndex = 0;
for (i = 0; i < this.rules.length; i++) {
    rule = this.rules[i];
    if (rule.type === "Comment") {
        if (importNodeIndex === i) {
            importNodeIndex++;
        }
        ruleNodes.push(rule);
    } else if (rule.isCharset && rule.isCharset()) {
        ruleNodes.splice(charsetNodeIndex, 0, rule);
        charsetNodeIndex++;
        importNodeIndex++;
    } else if (rule.type === "Import") {
        ruleNodes.splice(importNodeIndex, 0, rule);
        importNodeIndex++;
    } else {
        ruleNodes.push(rule);
    }
}
ruleNodes = charsetRuleNodes.concat(ruleNodes);

// If this is the root node, we don't render
// a selector, or {}.
if (!this.root) {
    debugInfo = getDebugInfo(context, this, tabSetStr);

    if (debugInfo) {
        output.add(debugInfo);
        output.add(tabSetStr);
    }

    var paths = this.paths, pathCnt = paths.length,
        pathSubCnt;

    sep = context.compress ? ',' : (',\n' + tabSetStr);

    for (i = 0; i < pathCnt; i++) {
        path = paths[i];
        if (!(pathSubCnt = path.length)) { continue; }
        if (i > 0) { output.add(sep); }

        context.firstSelector = true;
        path[0].genCSS(context, output);

        context.firstSelector = false;
        for (j = 1; j < pathSubCnt; j++) {
            path[j].genCSS(context, output);
        }
    }

    output.add((context.compress ? '{' : ' {\n') + tabRuleStr);
}

// Compile rules and rulesets
for (i = 0; i < ruleNodes.length; i++) {
    rule = ruleNodes[i];

    if (i + 1 === ruleNodes.length) {
        context.lastRule = true;
    }

    var currentLastRule = context.lastRule;
    if (isRulesetLikeNode(rule)) {
        context.lastRule = false;
    }

    if (rule.genCSS) {
        rule.genCSS(context, output);
    } else if (rule.value) {
        output.add(rule.value.toString());
    }

    context.lastRule = currentLastRule;

    if (!context.lastRule) {
        output.add(context.compress ? '' : ('\n' + tabRuleStr));
    } else {
        context.lastRule = false;
    }
}

if (!this.root) {
    output.add((context.compress ? '}' : '\n' + tabSetStr + '}'));
    context.tabLevel--;
}

if (!output.isEmpty() && !context.compress && this.firstRoot) {
    output.add('\n');
}

};

Ruleset.prototype.joinSelectors = function (paths, context, selectors) {

for (var s = 0; s < selectors.length; s++) {
    this.joinSelector(paths, context, selectors[s]);
}

};

Ruleset.prototype.joinSelector = function (paths, context, selector) {

function createParenthesis(elementsToPak, originalElement) {
    var replacementParen, j;
    if (elementsToPak.length === 0) {
        replacementParen = new Paren(elementsToPak[0]);
    } else {
        var insideParent = [];
        for (j = 0; j < elementsToPak.length; j++) {
            insideParent.push(new Element(null, elementsToPak[j], originalElement.index, originalElement.currentFileInfo));
        }
        replacementParen = new Paren(new Selector(insideParent));
    }
    return replacementParen;
}

function createSelector(containedElement, originalElement) {
    var element, selector;
    element = new Element(null, containedElement, originalElement.index, originalElement.currentFileInfo);
    selector = new Selector([element]);
    return selector;
}

// replace all parent selectors inside `inSelector` by content of `context` array
// resulting selectors are returned inside `paths` array
// returns true if `inSelector` contained at least one parent selector
function replaceParentSelector(paths, context, inSelector) {
    // The paths are [[Selector]]
    // The first list is a list of comma separated selectors
    // The inner list is a list of inheritance separated selectors
    // e.g.
    // .a, .b {
    //   .c {
    //   }
    // }
    // == [[.a] [.c]] [[.b] [.c]]
    //
    var i, j, k, currentElements, newSelectors, selectorsMultiplied, sel, el, hadParentSelector = false, length, lastSelector;
    function findNestedSelector(element) {
        var maybeSelector;
        if (element.value.type !== 'Paren') {
            return null;
        }

        maybeSelector = element.value.value;
        if (maybeSelector.type !== 'Selector') {
            return null;
        }

        return maybeSelector;
    }

    // the elements from the current selector so far
    currentElements = [];
    // the current list of new selectors to add to the path.
    // We will build it up. We initiate it with one empty selector as we "multiply" the new selectors
    // by the parents
    newSelectors = [
        []
    ];

    for (i = 0; i < inSelector.elements.length; i++) {
        el = inSelector.elements[i];
        // non parent reference elements just get added
        if (el.value !== "&") {
            var nestedSelector = findNestedSelector(el);
            if (nestedSelector != null) {
                // merge the current list of non parent selector elements
                // on to the current list of selectors to add
                mergeElementsOnToSelectors(currentElements, newSelectors);

                var nestedPaths = [], replaced, replacedNewSelectors = [];
                replaced = replaceParentSelector(nestedPaths, context, nestedSelector);
                hadParentSelector = hadParentSelector || replaced;
                //the nestedPaths array should have only one member - replaceParentSelector does not multiply selectors
                for (k = 0; k < nestedPaths.length; k++) {
                    var replacementSelector = createSelector(createParenthesis(nestedPaths[k], el), el);
                    addAllReplacementsIntoPath(newSelectors, [replacementSelector], el, inSelector, replacedNewSelectors);
                }
                newSelectors = replacedNewSelectors;
                currentElements = [];

            } else {
                currentElements.push(el);
            }

        } else {
            hadParentSelector = true;
            // the new list of selectors to add
            selectorsMultiplied = [];

            // merge the current list of non parent selector elements
            // on to the current list of selectors to add
            mergeElementsOnToSelectors(currentElements, newSelectors);

            // loop through our current selectors
            for (j = 0; j < newSelectors.length; j++) {
                sel = newSelectors[j];
                // if we don't have any parent paths, the & might be in a mixin so that it can be used
                // whether there are parents or not
                if (context.length === 0) {
                    // the combinator used on el should now be applied to the next element instead so that
                    // it is not lost
                    if (sel.length > 0) {
                        sel[0].elements.push(new Element(el.combinator, '', el.index, el.currentFileInfo));
                    }
                    selectorsMultiplied.push(sel);
                }
                else {
                    // and the parent selectors
                    for (k = 0; k < context.length; k++) {
                        // We need to put the current selectors
                        // then join the last selector's elements on to the parents selectors
                        var newSelectorPath = addReplacementIntoPath(sel, context[k], el, inSelector);
                        // add that to our new set of selectors
                        selectorsMultiplied.push(newSelectorPath);
                    }
                }
            }

            // our new selectors has been multiplied, so reset the state
            newSelectors = selectorsMultiplied;
            currentElements = [];
        }
    }

    // if we have any elements left over (e.g. .a& .b == .b)
    // add them on to all the current selectors
    mergeElementsOnToSelectors(currentElements, newSelectors);

    for (i = 0; i < newSelectors.length; i++) {
        length = newSelectors[i].length;
        if (length > 0) {
            paths.push(newSelectors[i]);
            lastSelector = newSelectors[i][length - 1];
            newSelectors[i][length - 1] = lastSelector.createDerived(lastSelector.elements, inSelector.extendList);
            //newSelectors[i][length - 1].copyVisibilityInfo(inSelector.visibilityInfo());
        }
    }

    return hadParentSelector;
}

// joins selector path from `beginningPath` with selector path in `addPath`
// `replacedElement` contains element that is being replaced by `addPath`
// returns concatenated path
function addReplacementIntoPath(beginningPath, addPath, replacedElement, originalSelector) {
    var newSelectorPath, lastSelector, newJoinedSelector;
    // our new selector path
    newSelectorPath = [];

    //construct the joined selector - if & is the first thing this will be empty,
    // if not newJoinedSelector will be the last set of elements in the selector
    if (beginningPath.length > 0) {
        newSelectorPath = beginningPath.slice(0);
        lastSelector = newSelectorPath.pop();
        newJoinedSelector = originalSelector.createDerived(lastSelector.elements.slice(0));
    }
    else {
        newJoinedSelector = originalSelector.createDerived([]);
    }

    if (addPath.length > 0) {
        // /deep/ is a combinator that is valid without anything in front of it
        // so if the & does not have a combinator that is "" or " " then
        // and there is a combinator on the parent, then grab that.
        // this also allows + a { & .b { .a & { ... though not sure why you would want to do that
        var combinator = replacedElement.combinator, parentEl = addPath[0].elements[0];
        if (combinator.emptyOrWhitespace && !parentEl.combinator.emptyOrWhitespace) {
            combinator = parentEl.combinator;
        }
        // join the elements so far with the first part of the parent
        newJoinedSelector.elements.push(new Element(combinator, parentEl.value, replacedElement.index, replacedElement.currentFileInfo));
        newJoinedSelector.elements = newJoinedSelector.elements.concat(addPath[0].elements.slice(1));
    }

    // now add the joined selector - but only if it is not empty
    if (newJoinedSelector.elements.length !== 0) {
        newSelectorPath.push(newJoinedSelector);
    }

    //put together the parent selectors after the join (e.g. the rest of the parent)
    if (addPath.length > 1) {
        var restOfPath = addPath.slice(1);
        restOfPath = restOfPath.map(function (selector) {
            return selector.createDerived(selector.elements, []);
        });
        newSelectorPath = newSelectorPath.concat(restOfPath);
    }
    return newSelectorPath;
}

// joins selector path from `beginningPath` with every selector path in `addPaths` array
// `replacedElement` contains element that is being replaced by `addPath`
// returns array with all concatenated paths
function addAllReplacementsIntoPath( beginningPath, addPaths, replacedElement, originalSelector, result) {
    var j;
    for (j = 0; j < beginningPath.length; j++) {
        var newSelectorPath = addReplacementIntoPath(beginningPath[j], addPaths, replacedElement, originalSelector);
        result.push(newSelectorPath);
    }
    return result;
}

function mergeElementsOnToSelectors(elements, selectors) {
    var i, sel;

    if (elements.length === 0) {
        return ;
    }
    if (selectors.length === 0) {
        selectors.push([ new Selector(elements) ]);
        return;
    }

    for (i = 0; i < selectors.length; i++) {
        sel = selectors[i];

        // if the previous thing in sel is a parent this needs to join on to it
        if (sel.length > 0) {
            sel[sel.length - 1] = sel[sel.length - 1].createDerived(sel[sel.length - 1].elements.concat(elements));
        }
        else {
            sel.push(new Selector(elements));
        }
    }
}

function deriveSelector(visibilityInfo, deriveFrom) {
    var newSelector = deriveFrom.createDerived(deriveFrom.elements, deriveFrom.extendList, deriveFrom.evaldCondition);
    newSelector.copyVisibilityInfo(visibilityInfo);
    return newSelector;
}

// joinSelector code follows
var i, newPaths, hadParentSelector;

newPaths = [];
hadParentSelector = replaceParentSelector(newPaths, context, selector);

if (!hadParentSelector) {
    if (context.length > 0) {
        newPaths = [];
        for (i = 0; i < context.length; i++) {
            //var concatenated = [];
            //context[i].forEach(function(entry) {
            //    var newEntry = entry.createDerived(entry.elements, entry.extendList, entry.evaldCondition);
            //    newEntry.copyVisibilityInfo(selector.visibilityInfo());
            //    concatenated.push(newEntry);
            //}, this);
            var concatenated = context[i].map(deriveSelector.bind(this, selector.visibilityInfo()));

            concatenated.push(selector);
            newPaths.push(concatenated);
        }
    }
    else {
        newPaths = [[selector]];
    }
}

for (i = 0; i < newPaths.length; i++) {
    paths.push(newPaths[i]);
}

}; module.exports = Ruleset;

},{“../contexts”:11,“../functions/default”:20,“../functions/function-registry”:22,“./debug-info”:54,“./element”:58,“./node”:70,“./paren”:72,“./rule”:74,“./selector”:77}],77:[function(require,module,exports){ var Node = require(“./node”),

Element = require("./element");

var Selector = function (elements, extendList, condition, index, currentFileInfo, visibilityInfo) {

this.elements = elements;
this.extendList = extendList;
this.condition = condition;
this.currentFileInfo = currentFileInfo || {};
if (!condition) {
    this.evaldCondition = true;
}
this.copyVisibilityInfo(visibilityInfo);

}; Selector.prototype = new Node(); Selector.prototype.type = “Selector”; Selector.prototype.accept = function (visitor) {

if (this.elements) {
    this.elements = visitor.visitArray(this.elements);
}
if (this.extendList) {
    this.extendList = visitor.visitArray(this.extendList);
}
if (this.condition) {
    this.condition = visitor.visit(this.condition);
}

}; Selector.prototype.createDerived = function(elements, extendList, evaldCondition) {

var info = this.visibilityInfo();
evaldCondition = (evaldCondition != null) ? evaldCondition : this.evaldCondition;
var newSelector = new Selector(elements, extendList || this.extendList, null, this.index, this.currentFileInfo, info);
newSelector.evaldCondition = evaldCondition;
newSelector.mediaEmpty = this.mediaEmpty;
return newSelector;

}; Selector.prototype.createEmptySelectors = function() {

var el = new Element('', '&', this.index, this.currentFileInfo),
    sels = [new Selector([el], null, null, this.index, this.currentFileInfo)];
sels[0].mediaEmpty = true;
return sels;

}; Selector.prototype.match = function (other) {

var elements = this.elements,
    len = elements.length,
    olen, i;

other.CacheElements();

olen = other._elements.length;
if (olen === 0 || len < olen) {
    return 0;
} else {
    for (i = 0; i < olen; i++) {
        if (elements[i].value !== other._elements[i]) {
            return 0;
        }
    }
}

return olen; // return number of matched elements

}; Selector.prototype.CacheElements = function() {

if (this._elements) {
    return;
}

var elements = this.elements.map( function(v) {
    return v.combinator.value + (v.value.value || v.value);
}).join("").match(/[,&#\*\.\w-]([\w-]|(\\.))*/g);

if (elements) {
    if (elements[0] === "&") {
        elements.shift();
    }
} else {
    elements = [];
}

this._elements = elements;

}; Selector.prototype.isJustParentSelector = function() {

return !this.mediaEmpty &&
    this.elements.length === 1 &&
    this.elements[0].value === '&' &&
    (this.elements[0].combinator.value === ' ' || this.elements[0].combinator.value === '');

}; Selector.prototype.eval = function (context) {

var evaldCondition = this.condition && this.condition.eval(context),
    elements = this.elements, extendList = this.extendList;

elements = elements && elements.map(function (e) { return e.eval(context); });
extendList = extendList && extendList.map(function(extend) { return extend.eval(context); });

return this.createDerived(elements, extendList, evaldCondition);

}; Selector.prototype.genCSS = function (context, output) {

var i, element;
if ((!context || !context.firstSelector) && this.elements[0].combinator.value === "") {
    output.add(' ', this.currentFileInfo, this.index);
}
if (!this._css) {
    //TODO caching? speed comparison?
    for (i = 0; i < this.elements.length; i++) {
        element = this.elements[i];
        element.genCSS(context, output);
    }
}

}; Selector.prototype.getIsOutput = function() {

return this.evaldCondition;

}; module.exports = Selector;

},{“./element”:58,“./node”:70}],78:[function(require,module,exports){ var Node = require(“./node”);

var UnicodeDescriptor = function (value) {

this.value = value;

}; UnicodeDescriptor.prototype = new Node(); UnicodeDescriptor.prototype.type = “UnicodeDescriptor”;

module.exports = UnicodeDescriptor;

},{“./node”:70}],79:[function(require,module,exports){ var Node = require(“./node”),

unitConversions = require("../data/unit-conversions");

var Unit = function (numerator, denominator, backupUnit) {

this.numerator = numerator ? numerator.slice(0).sort() : [];
this.denominator = denominator ? denominator.slice(0).sort() : [];
if (backupUnit) {
    this.backupUnit = backupUnit;
} else if (numerator && numerator.length) {
    this.backupUnit = numerator[0];
}

};

Unit.prototype = new Node(); Unit.prototype.type = “Unit”; Unit.prototype.clone = function () {

return new Unit(this.numerator.slice(0), this.denominator.slice(0), this.backupUnit);

}; Unit.prototype.genCSS = function (context, output) {

// Dimension checks the unit is singular and throws an error if in strict math mode.
var strictUnits = context && context.strictUnits;
if (this.numerator.length === 1) {
    output.add(this.numerator[0]); // the ideal situation
} else if (!strictUnits && this.backupUnit) {
    output.add(this.backupUnit);
} else if (!strictUnits && this.denominator.length) {
    output.add(this.denominator[0]);
}

}; Unit.prototype.toString = function () {

var i, returnStr = this.numerator.join("*");
for (i = 0; i < this.denominator.length; i++) {
    returnStr += "/" + this.denominator[i];
}
return returnStr;

}; Unit.prototype.compare = function (other) {

return this.is(other.toString()) ? 0 : undefined;

}; Unit.prototype.is = function (unitString) {

return this.toString().toUpperCase() === unitString.toUpperCase();

}; Unit.prototype.isLength = function () {

return Boolean(this.toCSS().match(/px|em|%|in|cm|mm|pc|pt|ex/));

}; Unit.prototype.isEmpty = function () {

return this.numerator.length === 0 && this.denominator.length === 0;

}; Unit.prototype.isSingular = function() {

return this.numerator.length <= 1 && this.denominator.length === 0;

}; Unit.prototype.map = function(callback) {

var i;

for (i = 0; i < this.numerator.length; i++) {
    this.numerator[i] = callback(this.numerator[i], false);
}

for (i = 0; i < this.denominator.length; i++) {
    this.denominator[i] = callback(this.denominator[i], true);
}

}; Unit.prototype.usedUnits = function() {

var group, result = {}, mapUnit;

mapUnit = function (atomicUnit) {
    /*jshint loopfunc:true */
    if (group.hasOwnProperty(atomicUnit) && !result[groupName]) {
        result[groupName] = atomicUnit;
    }

    return atomicUnit;
};

for (var groupName in unitConversions) {
    if (unitConversions.hasOwnProperty(groupName)) {
        group = unitConversions[groupName];

        this.map(mapUnit);
    }
}

return result;

}; Unit.prototype.cancel = function () {

var counter = {}, atomicUnit, i;

for (i = 0; i < this.numerator.length; i++) {
    atomicUnit = this.numerator[i];
    counter[atomicUnit] = (counter[atomicUnit] || 0) + 1;
}

for (i = 0; i < this.denominator.length; i++) {
    atomicUnit = this.denominator[i];
    counter[atomicUnit] = (counter[atomicUnit] || 0) - 1;
}

this.numerator = [];
this.denominator = [];

for (atomicUnit in counter) {
    if (counter.hasOwnProperty(atomicUnit)) {
        var count = counter[atomicUnit];

        if (count > 0) {
            for (i = 0; i < count; i++) {
                this.numerator.push(atomicUnit);
            }
        } else if (count < 0) {
            for (i = 0; i < -count; i++) {
                this.denominator.push(atomicUnit);
            }
        }
    }
}

this.numerator.sort();
this.denominator.sort();

}; module.exports = Unit;

},{“../data/unit-conversions”:14,“./node”:70}],80:[function(require,module,exports){ var Node = require(“./node”);

var URL = function (val, index, currentFileInfo, isEvald) {

this.value = val;
this.currentFileInfo = currentFileInfo;
this.index = index;
this.isEvald = isEvald;

}; URL.prototype = new Node(); URL.prototype.type = “Url”; URL.prototype.accept = function (visitor) {

this.value = visitor.visit(this.value);

}; URL.prototype.genCSS = function (context, output) {

output.add("url(");
this.value.genCSS(context, output);
output.add(")");

}; URL.prototype.eval = function (context) {

var val = this.value.eval(context),
    rootpath;

if (!this.isEvald) {
    // Add the base path if the URL is relative
    rootpath = this.currentFileInfo && this.currentFileInfo.rootpath;
    if (rootpath &&
        typeof val.value === "string" &&
        context.isPathRelative(val.value)) {

        if (!val.quote) {
            rootpath = rootpath.replace(/[\(\)'"\s]/g, function(match) { return "\\" + match; });
        }
        val.value = rootpath + val.value;
    }

    val.value = context.normalizePath(val.value);

    // Add url args if enabled
    if (context.urlArgs) {
        if (!val.value.match(/^\s*data:/)) {
            var delimiter = val.value.indexOf('?') === -1 ? '?' : '&';
            var urlArgs = delimiter + context.urlArgs;
            if (val.value.indexOf('#') !== -1) {
                val.value = val.value.replace('#', urlArgs + '#');
            } else {
                val.value += urlArgs;
            }
        }
    }
}

return new URL(val, this.index, this.currentFileInfo, true);

}; module.exports = URL;

},{“./node”:70}],81:[function(require,module,exports){ var Node = require(“./node”);

var Value = function (value) {

this.value = value;
if (!value) {
    throw new Error("Value requires an array argument");
}

}; Value.prototype = new Node(); Value.prototype.type = “Value”; Value.prototype.accept = function (visitor) {

if (this.value) {
    this.value = visitor.visitArray(this.value);
}

}; Value.prototype.eval = function (context) {

if (this.value.length === 1) {
    return this.value[0].eval(context);
} else {
    return new Value(this.value.map(function (v) {
        return v.eval(context);
    }));
}

}; Value.prototype.genCSS = function (context, output) {

var i;
for (i = 0; i < this.value.length; i++) {
    this.value[i].genCSS(context, output);
    if (i + 1 < this.value.length) {
        output.add((context && context.compress) ? ',' : ', ');
    }
}

}; module.exports = Value;

},{“./node”:70}],82:[function(require,module,exports){ var Node = require(“./node”);

var Variable = function (name, index, currentFileInfo) {

this.name = name;
this.index = index;
this.currentFileInfo = currentFileInfo || {};

}; Variable.prototype = new Node(); Variable.prototype.type = “Variable”; Variable.prototype.eval = function (context) {

var variable, name = this.name;

if (name.indexOf('@@') === 0) {
    name = '@' + new Variable(name.slice(1), this.index, this.currentFileInfo).eval(context).value;
}

if (this.evaluating) {
    throw { type: 'Name',
            message: "Recursive variable definition for " + name,
            filename: this.currentFileInfo.filename,
            index: this.index };
}

this.evaluating = true;

variable = this.find(context.frames, function (frame) {
    var v = frame.variable(name);
    if (v) {
        if (v.important) {
            var importantScope = context.importantScope[context.importantScope.length - 1];
            importantScope.important = v.important;
        }
        return v.value.eval(context);
    }
});
if (variable) {
    this.evaluating = false;
    return variable;
} else {
    throw { type: 'Name',
            message: "variable " + name + " is undefined",
            filename: this.currentFileInfo.filename,
            index: this.index };
}

}; Variable.prototype.find = function (obj, fun) {

for (var i = 0, r; i < obj.length; i++) {
    r = fun.call(obj, obj[i]);
    if (r) { return r; }
}
return null;

}; module.exports = Variable;

},{“./node”:70}],83:[function(require,module,exports){ module.exports = {

getLocation: function(index, inputStream) {
    var n = index + 1,
        line = null,
        column = -1;

    while (--n >= 0 && inputStream.charAt(n) !== '\n') {
        column++;
    }

    if (typeof index === 'number') {
        line = (inputStream.slice(0, index).match(/\n/g) || "").length;
    }

    return {
        line: line,
        column: column
    };
}

};

},{}],84:[function(require,module,exports){ var tree = require(“../tree”),

Visitor = require("./visitor"),
logger = require("../logger");

/*jshint loopfunc:true */

var ExtendFinderVisitor = function() {

this._visitor = new Visitor(this);
this.contexts = [];
this.allExtendsStack = [[]];

};

ExtendFinderVisitor.prototype = {

run: function (root) {
    root = this._visitor.visit(root);
    root.allExtends = this.allExtendsStack[0];
    return root;
},
visitRule: function (ruleNode, visitArgs) {
    visitArgs.visitDeeper = false;
},
visitMixinDefinition: function (mixinDefinitionNode, visitArgs) {
    visitArgs.visitDeeper = false;
},
visitRuleset: function (rulesetNode, visitArgs) {
    if (rulesetNode.root) {
        return;
    }

    var i, j, extend, allSelectorsExtendList = [], extendList;

    // get &:extend(.a); rules which apply to all selectors in this ruleset
    var rules = rulesetNode.rules, ruleCnt = rules ? rules.length : 0;
    for (i = 0; i < ruleCnt; i++) {
        if (rulesetNode.rules[i] instanceof tree.Extend) {
            allSelectorsExtendList.push(rules[i]);
            rulesetNode.extendOnEveryPath = true;
        }
    }

    // now find every selector and apply the extends that apply to all extends
    // and the ones which apply to an individual extend
    var paths = rulesetNode.paths;
    for (i = 0; i < paths.length; i++) {
        var selectorPath = paths[i],
            selector = selectorPath[selectorPath.length - 1],
            selExtendList = selector.extendList;

        extendList = selExtendList ? selExtendList.slice(0).concat(allSelectorsExtendList)
                                   : allSelectorsExtendList;

        if (extendList) {
            extendList = extendList.map(function(allSelectorsExtend) {
                return allSelectorsExtend.clone();
            });
        }

        for (j = 0; j < extendList.length; j++) {
            this.foundExtends = true;
            extend = extendList[j];
            extend.findSelfSelectors(selectorPath);
            extend.ruleset = rulesetNode;
            if (j === 0) { extend.firstExtendOnThisSelectorPath = true; }
            this.allExtendsStack[this.allExtendsStack.length - 1].push(extend);
        }
    }

    this.contexts.push(rulesetNode.selectors);
},
visitRulesetOut: function (rulesetNode) {
    if (!rulesetNode.root) {
        this.contexts.length = this.contexts.length - 1;
    }
},
visitMedia: function (mediaNode, visitArgs) {
    mediaNode.allExtends = [];
    this.allExtendsStack.push(mediaNode.allExtends);
},
visitMediaOut: function (mediaNode) {
    this.allExtendsStack.length = this.allExtendsStack.length - 1;
},
visitDirective: function (directiveNode, visitArgs) {
    directiveNode.allExtends = [];
    this.allExtendsStack.push(directiveNode.allExtends);
},
visitDirectiveOut: function (directiveNode) {
    this.allExtendsStack.length = this.allExtendsStack.length - 1;
}

};

var ProcessExtendsVisitor = function() {

this._visitor = new Visitor(this);

};

ProcessExtendsVisitor.prototype = {

run: function(root) {
    var extendFinder = new ExtendFinderVisitor();
    this.extendIndicies = {};
    extendFinder.run(root);
    if (!extendFinder.foundExtends) { return root; }
    root.allExtends = root.allExtends.concat(this.doExtendChaining(root.allExtends, root.allExtends));
    this.allExtendsStack = [root.allExtends];
    var newRoot = this._visitor.visit(root);
    this.checkExtendsForNonMatched(root.allExtends);
    return newRoot;
},
checkExtendsForNonMatched: function(extendList) {
    var indicies = this.extendIndicies;
    extendList.filter(function(extend) {
        return !extend.hasFoundMatches && extend.parent_ids.length == 1;
    }).forEach(function(extend) {
            var selector = "_unknown_";
            try {
                selector = extend.selector.toCSS({});
            }
            catch(_) {}

            if (!indicies[extend.index + ' ' + selector]) {
                indicies[extend.index + ' ' + selector] = true;
                logger.warn("extend '" + selector + "' has no matches");
            }
        });
},
doExtendChaining: function (extendsList, extendsListTarget, iterationCount) {
    //
    // chaining is different from normal extension.. if we extend an extend then we are not just copying, altering
    // and pasting the selector we would do normally, but we are also adding an extend with the same target selector
    // this means this new extend can then go and alter other extends
    //
    // this method deals with all the chaining work - without it, extend is flat and doesn't work on other extend selectors
    // this is also the most expensive.. and a match on one selector can cause an extension of a selector we had already
    // processed if we look at each selector at a time, as is done in visitRuleset

    var extendIndex, targetExtendIndex, matches, extendsToAdd = [], newSelector, extendVisitor = this, selectorPath,
        extend, targetExtend, newExtend;

    iterationCount = iterationCount || 0;

    //loop through comparing every extend with every target extend.
    // a target extend is the one on the ruleset we are looking at copy/edit/pasting in place
    // e.g.  .a:extend(.b) {}  and .b:extend(.c) {} then the first extend extends the second one
    // and the second is the target.
    // the seperation into two lists allows us to process a subset of chains with a bigger set, as is the
    // case when processing media queries
    for (extendIndex = 0; extendIndex < extendsList.length; extendIndex++) {
        for (targetExtendIndex = 0; targetExtendIndex < extendsListTarget.length; targetExtendIndex++) {

            extend = extendsList[extendIndex];
            targetExtend = extendsListTarget[targetExtendIndex];

            // look for circular references
            if ( extend.parent_ids.indexOf( targetExtend.object_id ) >= 0 ) { continue; }

            // find a match in the target extends self selector (the bit before :extend)
            selectorPath = [targetExtend.selfSelectors[0]];
            matches = extendVisitor.findMatch(extend, selectorPath);

            if (matches.length) {
                extend.hasFoundMatches = true;

                // we found a match, so for each self selector..
                extend.selfSelectors.forEach(function(selfSelector) {
                    var info = targetExtend.visibilityInfo();

                    // process the extend as usual
                    newSelector = extendVisitor.extendSelector(matches, selectorPath, selfSelector, extend.isVisible());

                    // but now we create a new extend from it
                    newExtend = new(tree.Extend)(targetExtend.selector, targetExtend.option, 0, targetExtend.currentFileInfo, info);
                    newExtend.selfSelectors = newSelector;

                    // add the extend onto the list of extends for that selector
                    newSelector[newSelector.length - 1].extendList = [newExtend];

                    // record that we need to add it.
                    extendsToAdd.push(newExtend);
                    newExtend.ruleset = targetExtend.ruleset;

                    //remember its parents for circular references
                    newExtend.parent_ids = newExtend.parent_ids.concat(targetExtend.parent_ids, extend.parent_ids);

                    // only process the selector once.. if we have :extend(.a,.b) then multiple
                    // extends will look at the same selector path, so when extending
                    // we know that any others will be duplicates in terms of what is added to the css
                    if (targetExtend.firstExtendOnThisSelectorPath) {
                        newExtend.firstExtendOnThisSelectorPath = true;
                        targetExtend.ruleset.paths.push(newSelector);
                    }
                });
            }
        }
    }

    if (extendsToAdd.length) {
        // try to detect circular references to stop a stack overflow.
        // may no longer be needed.
        this.extendChainCount++;
        if (iterationCount > 100) {
            var selectorOne = "{unable to calculate}";
            var selectorTwo = "{unable to calculate}";
            try {
                selectorOne = extendsToAdd[0].selfSelectors[0].toCSS();
                selectorTwo = extendsToAdd[0].selector.toCSS();
            }
            catch(e) {}
            throw { message: "extend circular reference detected. One of the circular extends is currently:" +
                selectorOne + ":extend(" + selectorTwo + ")"};
        }

        // now process the new extends on the existing rules so that we can handle a extending b extending c extending
        // d extending e...
        return extendsToAdd.concat(extendVisitor.doExtendChaining(extendsToAdd, extendsListTarget, iterationCount + 1));
    } else {
        return extendsToAdd;
    }
},
visitRule: function (ruleNode, visitArgs) {
    visitArgs.visitDeeper = false;
},
visitMixinDefinition: function (mixinDefinitionNode, visitArgs) {
    visitArgs.visitDeeper = false;
},
visitSelector: function (selectorNode, visitArgs) {
    visitArgs.visitDeeper = false;
},
visitRuleset: function (rulesetNode, visitArgs) {
    if (rulesetNode.root) {
        return;
    }
    var matches, pathIndex, extendIndex, allExtends = this.allExtendsStack[this.allExtendsStack.length - 1],
        selectorsToAdd = [], extendVisitor = this, selectorPath;

    // look at each selector path in the ruleset, find any extend matches and then copy, find and replace

    for (extendIndex = 0; extendIndex < allExtends.length; extendIndex++) {
        for (pathIndex = 0; pathIndex < rulesetNode.paths.length; pathIndex++) {
            selectorPath = rulesetNode.paths[pathIndex];

            // extending extends happens initially, before the main pass
            if (rulesetNode.extendOnEveryPath) { continue; }
            var extendList = selectorPath[selectorPath.length - 1].extendList;
            if (extendList && extendList.length) { continue; }

            matches = this.findMatch(allExtends[extendIndex], selectorPath);

            if (matches.length) {
                allExtends[extendIndex].hasFoundMatches = true;

                allExtends[extendIndex].selfSelectors.forEach(function(selfSelector) {
                    var extendedSelectors;
                    extendedSelectors = extendVisitor.extendSelector(matches, selectorPath, selfSelector, allExtends[extendIndex].isVisible());
                    selectorsToAdd.push(extendedSelectors);
                });
            }
        }
    }
    rulesetNode.paths = rulesetNode.paths.concat(selectorsToAdd);
},
findMatch: function (extend, haystackSelectorPath) {
    //
    // look through the haystack selector path to try and find the needle - extend.selector
    // returns an array of selector matches that can then be replaced
    //
    var haystackSelectorIndex, hackstackSelector, hackstackElementIndex, haystackElement,
        targetCombinator, i,
        extendVisitor = this,
        needleElements = extend.selector.elements,
        potentialMatches = [], potentialMatch, matches = [];

    // loop through the haystack elements
    for (haystackSelectorIndex = 0; haystackSelectorIndex < haystackSelectorPath.length; haystackSelectorIndex++) {
        hackstackSelector = haystackSelectorPath[haystackSelectorIndex];

        for (hackstackElementIndex = 0; hackstackElementIndex < hackstackSelector.elements.length; hackstackElementIndex++) {

            haystackElement = hackstackSelector.elements[hackstackElementIndex];

            // if we allow elements before our match we can add a potential match every time. otherwise only at the first element.
            if (extend.allowBefore || (haystackSelectorIndex === 0 && hackstackElementIndex === 0)) {
                potentialMatches.push({pathIndex: haystackSelectorIndex, index: hackstackElementIndex, matched: 0,
                    initialCombinator: haystackElement.combinator});
            }

            for (i = 0; i < potentialMatches.length; i++) {
                potentialMatch = potentialMatches[i];

                // selectors add " " onto the first element. When we use & it joins the selectors together, but if we don't
                // then each selector in haystackSelectorPath has a space before it added in the toCSS phase. so we need to
                // work out what the resulting combinator will be
                targetCombinator = haystackElement.combinator.value;
                if (targetCombinator === '' && hackstackElementIndex === 0) {
                    targetCombinator = ' ';
                }

                // if we don't match, null our match to indicate failure
                if (!extendVisitor.isElementValuesEqual(needleElements[potentialMatch.matched].value, haystackElement.value) ||
                    (potentialMatch.matched > 0 && needleElements[potentialMatch.matched].combinator.value !== targetCombinator)) {
                    potentialMatch = null;
                } else {
                    potentialMatch.matched++;
                }

                // if we are still valid and have finished, test whether we have elements after and whether these are allowed
                if (potentialMatch) {
                    potentialMatch.finished = potentialMatch.matched === needleElements.length;
                    if (potentialMatch.finished &&
                        (!extend.allowAfter &&
                            (hackstackElementIndex + 1 < hackstackSelector.elements.length || haystackSelectorIndex + 1 < haystackSelectorPath.length))) {
                        potentialMatch = null;
                    }
                }
                // if null we remove, if not, we are still valid, so either push as a valid match or continue
                if (potentialMatch) {
                    if (potentialMatch.finished) {
                        potentialMatch.length = needleElements.length;
                        potentialMatch.endPathIndex = haystackSelectorIndex;
                        potentialMatch.endPathElementIndex = hackstackElementIndex + 1; // index after end of match
                        potentialMatches.length = 0; // we don't allow matches to overlap, so start matching again
                        matches.push(potentialMatch);
                    }
                } else {
                    potentialMatches.splice(i, 1);
                    i--;
                }
            }
        }
    }
    return matches;
},
isElementValuesEqual: function(elementValue1, elementValue2) {
    if (typeof elementValue1 === "string" || typeof elementValue2 === "string") {
        return elementValue1 === elementValue2;
    }
    if (elementValue1 instanceof tree.Attribute) {
        if (elementValue1.op !== elementValue2.op || elementValue1.key !== elementValue2.key) {
            return false;
        }
        if (!elementValue1.value || !elementValue2.value) {
            if (elementValue1.value || elementValue2.value) {
                return false;
            }
            return true;
        }
        elementValue1 = elementValue1.value.value || elementValue1.value;
        elementValue2 = elementValue2.value.value || elementValue2.value;
        return elementValue1 === elementValue2;
    }
    elementValue1 = elementValue1.value;
    elementValue2 = elementValue2.value;
    if (elementValue1 instanceof tree.Selector) {
        if (!(elementValue2 instanceof tree.Selector) || elementValue1.elements.length !== elementValue2.elements.length) {
            return false;
        }
        for (var i = 0; i  < elementValue1.elements.length; i++) {
            if (elementValue1.elements[i].combinator.value !== elementValue2.elements[i].combinator.value) {
                if (i !== 0 || (elementValue1.elements[i].combinator.value || ' ') !== (elementValue2.elements[i].combinator.value || ' ')) {
                    return false;
                }
            }
            if (!this.isElementValuesEqual(elementValue1.elements[i].value, elementValue2.elements[i].value)) {
                return false;
            }
        }
        return true;
    }
    return false;
},
extendSelector:function (matches, selectorPath, replacementSelector, isVisible) {

    //for a set of matches, replace each match with the replacement selector

    var currentSelectorPathIndex = 0,
        currentSelectorPathElementIndex = 0,
        path = [],
        matchIndex,
        selector,
        firstElement,
        match,
        newElements;

    for (matchIndex = 0; matchIndex < matches.length; matchIndex++) {
        match = matches[matchIndex];
        selector = selectorPath[match.pathIndex];
        firstElement = new tree.Element(
            match.initialCombinator,
            replacementSelector.elements[0].value,
            replacementSelector.elements[0].index,
            replacementSelector.elements[0].currentFileInfo
        );

        if (match.pathIndex > currentSelectorPathIndex && currentSelectorPathElementIndex > 0) {
            path[path.length - 1].elements = path[path.length - 1]
                .elements.concat(selectorPath[currentSelectorPathIndex].elements.slice(currentSelectorPathElementIndex));
            currentSelectorPathElementIndex = 0;
            currentSelectorPathIndex++;
        }

        newElements = selector.elements
            .slice(currentSelectorPathElementIndex, match.index)
            .concat([firstElement])
            .concat(replacementSelector.elements.slice(1));

        if (currentSelectorPathIndex === match.pathIndex && matchIndex > 0) {
            path[path.length - 1].elements =
                path[path.length - 1].elements.concat(newElements);
        } else {
            path = path.concat(selectorPath.slice(currentSelectorPathIndex, match.pathIndex));

            path.push(new tree.Selector(
                newElements
            ));
        }
        currentSelectorPathIndex = match.endPathIndex;
        currentSelectorPathElementIndex = match.endPathElementIndex;
        if (currentSelectorPathElementIndex >= selectorPath[currentSelectorPathIndex].elements.length) {
            currentSelectorPathElementIndex = 0;
            currentSelectorPathIndex++;
        }
    }

    if (currentSelectorPathIndex < selectorPath.length && currentSelectorPathElementIndex > 0) {
        path[path.length - 1].elements = path[path.length - 1]
            .elements.concat(selectorPath[currentSelectorPathIndex].elements.slice(currentSelectorPathElementIndex));
        currentSelectorPathIndex++;
    }

    path = path.concat(selectorPath.slice(currentSelectorPathIndex, selectorPath.length));
    path = path.map(function (currentValue) {
        // we can re-use elements here, because the visibility property matters only for selectors
        var derived = currentValue.createDerived(currentValue.elements);
        if (isVisible) {
            derived.ensureVisibility();
        } else {
            derived.ensureInvisibility();
        }
        return derived;
    });
    return path;
},
visitMedia: function (mediaNode, visitArgs) {
    var newAllExtends = mediaNode.allExtends.concat(this.allExtendsStack[this.allExtendsStack.length - 1]);
    newAllExtends = newAllExtends.concat(this.doExtendChaining(newAllExtends, mediaNode.allExtends));
    this.allExtendsStack.push(newAllExtends);
},
visitMediaOut: function (mediaNode) {
    var lastIndex = this.allExtendsStack.length - 1;
    this.allExtendsStack.length = lastIndex;
},
visitDirective: function (directiveNode, visitArgs) {
    var newAllExtends = directiveNode.allExtends.concat(this.allExtendsStack[this.allExtendsStack.length - 1]);
    newAllExtends = newAllExtends.concat(this.doExtendChaining(newAllExtends, directiveNode.allExtends));
    this.allExtendsStack.push(newAllExtends);
},
visitDirectiveOut: function (directiveNode) {
    var lastIndex = this.allExtendsStack.length - 1;
    this.allExtendsStack.length = lastIndex;
}

};

module.exports = ProcessExtendsVisitor;

},{“../logger”:33,“../tree”:62,“./visitor”:91}],85:[function(require,module,exports){ function ImportSequencer(onSequencerEmpty) {

this.imports = [];
this.variableImports = [];
this._onSequencerEmpty = onSequencerEmpty;
this._currentDepth = 0;

}

ImportSequencer.prototype.addImport = function(callback) {

var importSequencer = this,
    importItem = {
        callback: callback,
        args: null,
        isReady: false
    };
this.imports.push(importItem);
return function() {
    importItem.args = Array.prototype.slice.call(arguments, 0);
    importItem.isReady = true;
    importSequencer.tryRun();
};

};

ImportSequencer.prototype.addVariableImport = function(callback) {

this.variableImports.push(callback);

};

ImportSequencer.prototype.tryRun = function() {

this._currentDepth++;
try {
    while (true) {
        while (this.imports.length > 0) {
            var importItem = this.imports[0];
            if (!importItem.isReady) {
                return;
            }
            this.imports = this.imports.slice(1);
            importItem.callback.apply(null, importItem.args);
        }
        if (this.variableImports.length === 0) {
            break;
        }
        var variableImport = this.variableImports[0];
        this.variableImports = this.variableImports.slice(1);
        variableImport();
    }
} finally {
    this._currentDepth--;
}
if (this._currentDepth === 0 && this._onSequencerEmpty) {
    this._onSequencerEmpty();
}

};

module.exports = ImportSequencer;

},{}],86:[function(require,module,exports){ var contexts = require(“../contexts”),

Visitor = require("./visitor"),
ImportSequencer = require("./import-sequencer");

var ImportVisitor = function(importer, finish) {

this._visitor = new Visitor(this);
this._importer = importer;
this._finish = finish;
this.context = new contexts.Eval();
this.importCount = 0;
this.onceFileDetectionMap = {};
this.recursionDetector = {};
this._sequencer = new ImportSequencer(this._onSequencerEmpty.bind(this));

};

ImportVisitor.prototype = {

isReplacing: false,
run: function (root) {
    try {
        // process the contents
        this._visitor.visit(root);
    }
    catch(e) {
        this.error = e;
    }

    this.isFinished = true;
    this._sequencer.tryRun();
},
_onSequencerEmpty: function() {
    if (!this.isFinished) {
        return;
    }
    this._finish(this.error);
},
visitImport: function (importNode, visitArgs) {
    var inlineCSS = importNode.options.inline;

    if (!importNode.css || inlineCSS) {

        var context = new contexts.Eval(this.context, this.context.frames.slice(0));
        var importParent = context.frames[0];

        this.importCount++;
        if (importNode.isVariableImport()) {
            this._sequencer.addVariableImport(this.processImportNode.bind(this, importNode, context, importParent));
        } else {
            this.processImportNode(importNode, context, importParent);
        }
    }
    visitArgs.visitDeeper = false;
},
processImportNode: function(importNode, context, importParent) {
    var evaldImportNode,
        inlineCSS = importNode.options.inline;

    try {
        evaldImportNode = importNode.evalForImport(context);
    } catch(e) {
        if (!e.filename) { e.index = importNode.index; e.filename = importNode.currentFileInfo.filename; }
        // attempt to eval properly and treat as css
        importNode.css = true;
        // if that fails, this error will be thrown
        importNode.error = e;
    }

    if (evaldImportNode && (!evaldImportNode.css || inlineCSS)) {

        if (evaldImportNode.options.multiple) {
            context.importMultiple = true;
        }

        // try appending if we haven't determined if it is css or not
        var tryAppendLessExtension = evaldImportNode.css === undefined;

        for (var i = 0; i < importParent.rules.length; i++) {
            if (importParent.rules[i] === importNode) {
                importParent.rules[i] = evaldImportNode;
                break;
            }
        }

        var onImported = this.onImported.bind(this, evaldImportNode, context),
            sequencedOnImported = this._sequencer.addImport(onImported);

        this._importer.push(evaldImportNode.getPath(), tryAppendLessExtension, evaldImportNode.currentFileInfo,
            evaldImportNode.options, sequencedOnImported);
    } else {
        this.importCount--;
        if (this.isFinished) {
            this._sequencer.tryRun();
        }
    }
},
onImported: function (importNode, context, e, root, importedAtRoot, fullPath) {
    if (e) {
        if (!e.filename) {
            e.index = importNode.index; e.filename = importNode.currentFileInfo.filename;
        }
        this.error = e;
    }

    var importVisitor = this,
        inlineCSS = importNode.options.inline,
        isPlugin = importNode.options.plugin,
        isOptional = importNode.options.optional,
        duplicateImport = importedAtRoot || fullPath in importVisitor.recursionDetector;

    if (!context.importMultiple) {
        if (duplicateImport) {
            importNode.skip = true;
        } else {
            importNode.skip = function() {
                if (fullPath in importVisitor.onceFileDetectionMap) {
                    return true;
                }
                importVisitor.onceFileDetectionMap[fullPath] = true;
                return false;
            };
        }
    }

    if (!fullPath && isOptional) {
        importNode.skip = true;
    }

    if (root) {
        importNode.root = root;
        importNode.importedFilename = fullPath;

        if (!inlineCSS && !isPlugin && (context.importMultiple || !duplicateImport)) {
            importVisitor.recursionDetector[fullPath] = true;

            var oldContext = this.context;
            this.context = context;
            try {
                this._visitor.visit(root);
            } catch (e) {
                this.error = e;
            }
            this.context = oldContext;
        }
    }

    importVisitor.importCount--;

    if (importVisitor.isFinished) {
        importVisitor._sequencer.tryRun();
    }
},
visitRule: function (ruleNode, visitArgs) {
    if (ruleNode.value.type === "DetachedRuleset") {
        this.context.frames.unshift(ruleNode);
    } else {
        visitArgs.visitDeeper = false;
    }
},
visitRuleOut : function(ruleNode) {
    if (ruleNode.value.type === "DetachedRuleset") {
        this.context.frames.shift();
    }
},
visitDirective: function (directiveNode, visitArgs) {
    this.context.frames.unshift(directiveNode);
},
visitDirectiveOut: function (directiveNode) {
    this.context.frames.shift();
},
visitMixinDefinition: function (mixinDefinitionNode, visitArgs) {
    this.context.frames.unshift(mixinDefinitionNode);
},
visitMixinDefinitionOut: function (mixinDefinitionNode) {
    this.context.frames.shift();
},
visitRuleset: function (rulesetNode, visitArgs) {
    this.context.frames.unshift(rulesetNode);
},
visitRulesetOut: function (rulesetNode) {
    this.context.frames.shift();
},
visitMedia: function (mediaNode, visitArgs) {
    this.context.frames.unshift(mediaNode.rules[0]);
},
visitMediaOut: function (mediaNode) {
    this.context.frames.shift();
}

}; module.exports = ImportVisitor;

},{“../contexts”:11,“./import-sequencer”:85,“./visitor”:91}],87:[function(require,module,exports){ var visitors = {

Visitor: require("./visitor"),
ImportVisitor: require('./import-visitor'),
MarkVisibleSelectorsVisitor: require("./set-tree-visibility-visitor"),
ExtendVisitor: require('./extend-visitor'),
JoinSelectorVisitor: require('./join-selector-visitor'),
ToCSSVisitor: require('./to-css-visitor')

};

module.exports = visitors;

},{“./extend-visitor”:84,“./import-visitor”:86,“./join-selector-visitor”:88,“./set-tree-visibility-visitor”:89,“./to-css-visitor”:90,“./visitor”:91}],88:[function(require,module,exports){ var Visitor = require(“./visitor”);

var JoinSelectorVisitor = function() {

this.contexts = [[]];
this._visitor = new Visitor(this);

};

JoinSelectorVisitor.prototype = {

run: function (root) {
    return this._visitor.visit(root);
},
visitRule: function (ruleNode, visitArgs) {
    visitArgs.visitDeeper = false;
},
visitMixinDefinition: function (mixinDefinitionNode, visitArgs) {
    visitArgs.visitDeeper = false;
},

visitRuleset: function (rulesetNode, visitArgs) {
    var context = this.contexts[this.contexts.length - 1],
        paths = [], selectors;

    this.contexts.push(paths);

    if (! rulesetNode.root) {
        selectors = rulesetNode.selectors;
        if (selectors) {
            selectors = selectors.filter(function(selector) { return selector.getIsOutput(); });
            rulesetNode.selectors = selectors.length ? selectors : (selectors = null);
            if (selectors) { rulesetNode.joinSelectors(paths, context, selectors); }
        }
        if (!selectors) { rulesetNode.rules = null; }
        rulesetNode.paths = paths;
    }
},
visitRulesetOut: function (rulesetNode) {
    this.contexts.length = this.contexts.length - 1;
},
visitMedia: function (mediaNode, visitArgs) {
    var context = this.contexts[this.contexts.length - 1];
    mediaNode.rules[0].root = (context.length === 0 || context[0].multiMedia);
},
visitDirective: function (directiveNode, visitArgs) {
    var context = this.contexts[this.contexts.length - 1];
    if (directiveNode.rules && directiveNode.rules.length) {
        directiveNode.rules[0].root = (directiveNode.isRooted || context.length === 0 || null);
    }
}

};

module.exports = JoinSelectorVisitor;

},{“./visitor”:91}],89:[function(require,module,exports){ var SetTreeVisibilityVisitor = function(visible) {

this.visible = visible;

}; SetTreeVisibilityVisitor.prototype.run = function(root) {

this.visit(root);

}; SetTreeVisibilityVisitor.prototype.visitArray = function(nodes) {

if (!nodes) {
    return nodes;
}

var cnt = nodes.length, i;
for (i = 0; i < cnt; i++) {
    this.visit(nodes[i]);
}
return nodes;

}; SetTreeVisibilityVisitor.prototype.visit = function(node) {

if (!node) {
    return node;
}
if (node.constructor === Array) {
    return this.visitArray(node);
}

if (!node.blocksVisibility || node.blocksVisibility()) {
    return node;
}
if (this.visible) {
    node.ensureVisibility();
} else {
    node.ensureInvisibility();
}

node.accept(this);
return node;

}; module.exports = SetTreeVisibilityVisitor; },{}],90:[function(require,module,exports){ var tree = require(“../tree”),

Visitor = require("./visitor");

var CSSVisitorUtils = function(context) {

this._visitor = new Visitor(this);
this._context = context;

};

CSSVisitorUtils.prototype = {

containsSilentNonBlockedChild: function(bodyRules) {
    var rule;
    if (bodyRules == null) {
        return false;
    }
    for (var r = 0; r < bodyRules.length; r++) {
        rule = bodyRules[r];
        if (rule.isSilent && rule.isSilent(this._context) && !rule.blocksVisibility()) {
            //the directive contains something that was referenced (likely by extend)
            //therefore it needs to be shown in output too
            return true;
        }
    }
    return false;
},

keepOnlyVisibleChilds: function(owner) {
    if (owner == null || owner.rules == null) {
        return ;
    }

    owner.rules = owner.rules.filter(function(thing) {
            return thing.isVisible();
        }
    );
},

isEmpty: function(owner) {
    if (owner == null || owner.rules == null) {
        return true;
    }
    return owner.rules.length === 0;
},

hasVisibleSelector: function(rulesetNode) {
    if (rulesetNode == null || rulesetNode.paths == null) {
        return false;
    }
    return rulesetNode.paths.length > 0;
},

resolveVisibility: function (node, originalRules) {
    if (!node.blocksVisibility()) {
        if (this.isEmpty(node) && !this.containsSilentNonBlockedChild(originalRules)) {
            return ;
        }

        return node;
    }

    var compiledRulesBody = node.rules[0];
    this.keepOnlyVisibleChilds(compiledRulesBody);

    if (this.isEmpty(compiledRulesBody)) {
        return ;
    }

    node.ensureVisibility();
    node.removeVisibilityBlock();

    return node;
},

isVisibleRuleset: function(rulesetNode) {
    if (rulesetNode.firstRoot) {
        return true;
    }

    if (this.isEmpty(rulesetNode)) {
        return false;
    }

    if (!rulesetNode.root && !this.hasVisibleSelector(rulesetNode)) {
        return false;
    }

    return true;
}

};

var ToCSSVisitor = function(context) {

this._visitor = new Visitor(this);
this._context = context;
this.utils = new CSSVisitorUtils(context);

};

ToCSSVisitor.prototype = {

isReplacing: true,
run: function (root) {
    return this._visitor.visit(root);
},

visitRule: function (ruleNode, visitArgs) {
    if (ruleNode.blocksVisibility() || ruleNode.variable) {
        return;
    }
    return ruleNode;
},

visitMixinDefinition: function (mixinNode, visitArgs) {
    // mixin definitions do not get eval'd - this means they keep state
    // so we have to clear that state here so it isn't used if toCSS is called twice
    mixinNode.frames = [];
},

visitExtend: function (extendNode, visitArgs) {
},

visitComment: function (commentNode, visitArgs) {
    if (commentNode.blocksVisibility() || commentNode.isSilent(this._context)) {
        return;
    }
    return commentNode;
},

visitMedia: function(mediaNode, visitArgs) {
    var originalRules = mediaNode.rules[0].rules;
    mediaNode.accept(this._visitor);
    visitArgs.visitDeeper = false;

    return this.utils.resolveVisibility(mediaNode, originalRules);
},

visitImport: function (importNode, visitArgs) {
    if (importNode.blocksVisibility()) {
        return ;
    }
    return importNode;
},

visitDirective: function(directiveNode, visitArgs) {
    if (directiveNode.rules && directiveNode.rules.length) {
        return this.visitDirectiveWithBody(directiveNode, visitArgs);
    } else {
        return this.visitDirectiveWithoutBody(directiveNode, visitArgs);
    }
    return directiveNode;
},

visitDirectiveWithBody: function(directiveNode, visitArgs) {
    //if there is only one nested ruleset and that one has no path, then it is
    //just fake ruleset
    function hasFakeRuleset(directiveNode) {
        var bodyRules = directiveNode.rules;
        return bodyRules.length === 1 && (!bodyRules[0].paths || bodyRules[0].paths.length === 0);
    }
    function getBodyRules(directiveNode) {
        var nodeRules = directiveNode.rules;
        if (hasFakeRuleset(directiveNode)) {
            return nodeRules[0].rules;
        }

        return nodeRules;
    }
    //it is still true that it is only one ruleset in array
    //this is last such moment
    //process childs
    var originalRules = getBodyRules(directiveNode);
    directiveNode.accept(this._visitor);
    visitArgs.visitDeeper = false;

    if (!this.utils.isEmpty(directiveNode)) {
        this._mergeRules(directiveNode.rules[0].rules);
    }

    return this.utils.resolveVisibility(directiveNode, originalRules);
},

visitDirectiveWithoutBody: function(directiveNode, visitArgs) {
    if (directiveNode.blocksVisibility()) {
        return;
    }

    if (directiveNode.name === "@charset") {
        // Only output the debug info together with subsequent @charset definitions
        // a comment (or @media statement) before the actual @charset directive would
        // be considered illegal css as it has to be on the first line
        if (this.charset) {
            if (directiveNode.debugInfo) {
                var comment = new tree.Comment("/* " + directiveNode.toCSS(this._context).replace(/\n/g, "") + " */\n");
                comment.debugInfo = directiveNode.debugInfo;
                return this._visitor.visit(comment);
            }
            return;
        }
        this.charset = true;
    }

    return directiveNode;
},

checkPropertiesInRoot: function(rules) {
    var ruleNode;
    for (var i = 0; i < rules.length; i++) {
        ruleNode = rules[i];
        if (ruleNode instanceof tree.Rule && !ruleNode.variable) {
            throw { message: "properties must be inside selector blocks, they cannot be in the root.",
                index: ruleNode.index, filename: ruleNode.currentFileInfo ? ruleNode.currentFileInfo.filename : null};
        }
    }
},

visitRuleset: function (rulesetNode, visitArgs) {
    //at this point rulesets are nested into each other
    var rule, rulesets = [];
    if (rulesetNode.firstRoot) {
        this.checkPropertiesInRoot(rulesetNode.rules);
    }
    if (! rulesetNode.root) {
        //remove invisible paths
        this._compileRulesetPaths(rulesetNode);

        // remove rulesets from this ruleset body and compile them separately
        var nodeRules = rulesetNode.rules, nodeRuleCnt = nodeRules ? nodeRules.length : 0;
        for (var i = 0; i < nodeRuleCnt; ) {
            rule = nodeRules[i];
            if (rule && rule.rules) {
                // visit because we are moving them out from being a child
                rulesets.push(this._visitor.visit(rule));
                nodeRules.splice(i, 1);
                nodeRuleCnt--;
                continue;
            }
            i++;
        }
        // accept the visitor to remove rules and refactor itself
        // then we can decide nogw whether we want it or not
        // compile body
        if (nodeRuleCnt > 0) {
            rulesetNode.accept(this._visitor);
        } else {
            rulesetNode.rules = null;
        }
        visitArgs.visitDeeper = false;

    } else { //if (! rulesetNode.root) {
        rulesetNode.accept(this._visitor);
        visitArgs.visitDeeper = false;
    }

    if (rulesetNode.rules) {
        this._mergeRules(rulesetNode.rules);
        this._removeDuplicateRules(rulesetNode.rules);
    }

    //now decide whether we keep the ruleset
    if (this.utils.isVisibleRuleset(rulesetNode)) {
        rulesetNode.ensureVisibility();
        rulesets.splice(0, 0, rulesetNode);
    }

    if (rulesets.length === 1) {
        return rulesets[0];
    }
    return rulesets;
},

_compileRulesetPaths: function(rulesetNode) {
    if (rulesetNode.paths) {
        rulesetNode.paths = rulesetNode.paths
            .filter(function(p) {
                var i;
                if (p[0].elements[0].combinator.value === ' ') {
                    p[0].elements[0].combinator = new(tree.Combinator)('');
                }
                for (i = 0; i < p.length; i++) {
                    if (p[i].isVisible() && p[i].getIsOutput()) {
                        return true;
                    }
                }
                return false;
            });
    }
},

_removeDuplicateRules: function(rules) {
    if (!rules) { return; }

    // remove duplicates
    var ruleCache = {},
        ruleList, rule, i;

    for (i = rules.length - 1; i >= 0 ; i--) {
        rule = rules[i];
        if (rule instanceof tree.Rule) {
            if (!ruleCache[rule.name]) {
                ruleCache[rule.name] = rule;
            } else {
                ruleList = ruleCache[rule.name];
                if (ruleList instanceof tree.Rule) {
                    ruleList = ruleCache[rule.name] = [ruleCache[rule.name].toCSS(this._context)];
                }
                var ruleCSS = rule.toCSS(this._context);
                if (ruleList.indexOf(ruleCSS) !== -1) {
                    rules.splice(i, 1);
                } else {
                    ruleList.push(ruleCSS);
                }
            }
        }
    }
},

_mergeRules: function (rules) {
    if (!rules) { return; }

    var groups = {},
        parts,
        rule,
        key;

    for (var i = 0; i < rules.length; i++) {
        rule = rules[i];

        if ((rule instanceof tree.Rule) && rule.merge) {
            key = [rule.name,
                rule.important ? "!" : ""].join(",");

            if (!groups[key]) {
                groups[key] = [];
            } else {
                rules.splice(i--, 1);
            }

            groups[key].push(rule);
        }
    }

    Object.keys(groups).map(function (k) {

        function toExpression(values) {
            return new (tree.Expression)(values.map(function (p) {
                return p.value;
            }));
        }

        function toValue(values) {
            return new (tree.Value)(values.map(function (p) {
                return p;
            }));
        }

        parts = groups[k];

        if (parts.length > 1) {
            rule = parts[0];
            var spacedGroups = [];
            var lastSpacedGroup = [];
            parts.map(function (p) {
                if (p.merge === "+") {
                    if (lastSpacedGroup.length > 0) {
                        spacedGroups.push(toExpression(lastSpacedGroup));
                    }
                    lastSpacedGroup = [];
                }
                lastSpacedGroup.push(p);
            });
            spacedGroups.push(toExpression(lastSpacedGroup));
            rule.value = toValue(spacedGroups);
        }
    });
},

visitAnonymous: function(anonymousNode, visitArgs) {
    if (anonymousNode.blocksVisibility()) {
        return ;
    }
    anonymousNode.accept(this._visitor);
    return anonymousNode;
}

};

module.exports = ToCSSVisitor;

},{“../tree”:62,“./visitor”:91}],91:[function(require,module,exports){ var tree = require(“../tree”);

var _visitArgs = { visitDeeper: true },

_hasIndexed = false;

function _noop(node) {

return node;

}

function indexNodeTypes(parent, ticker) {

// add .typeIndex to tree node types for lookup table
var key, child;
for (key in parent) {
    if (parent.hasOwnProperty(key)) {
        child = parent[key];
        switch (typeof child) {
            case "function":
                // ignore bound functions directly on tree which do not have a prototype
                // or aren't nodes
                if (child.prototype && child.prototype.type) {
                    child.prototype.typeIndex = ticker++;
                }
                break;
            case "object":
                ticker = indexNodeTypes(child, ticker);
                break;
        }
    }
}
return ticker;

}

var Visitor = function(implementation) {

this._implementation = implementation;
this._visitFnCache = [];

if (!_hasIndexed) {
    indexNodeTypes(tree, 1);
    _hasIndexed = true;
}

};

Visitor.prototype = {

visit: function(node) {
    if (!node) {
        return node;
    }

    var nodeTypeIndex = node.typeIndex;
    if (!nodeTypeIndex) {
        return node;
    }

    var visitFnCache = this._visitFnCache,
        impl = this._implementation,
        aryIndx = nodeTypeIndex << 1,
        outAryIndex = aryIndx | 1,
        func = visitFnCache[aryIndx],
        funcOut = visitFnCache[outAryIndex],
        visitArgs = _visitArgs,
        fnName;

    visitArgs.visitDeeper = true;

    if (!func) {
        fnName = "visit" + node.type;
        func = impl[fnName] || _noop;
        funcOut = impl[fnName + "Out"] || _noop;
        visitFnCache[aryIndx] = func;
        visitFnCache[outAryIndex] = funcOut;
    }

    if (func !== _noop) {
        var newNode = func.call(impl, node, visitArgs);
        if (impl.isReplacing) {
            node = newNode;
        }
    }

    if (visitArgs.visitDeeper && node && node.accept) {
        node.accept(this);
    }

    if (funcOut != _noop) {
        funcOut.call(impl, node);
    }

    return node;
},
visitArray: function(nodes, nonReplacing) {
    if (!nodes) {
        return nodes;
    }

    var cnt = nodes.length, i;

    // Non-replacing
    if (nonReplacing || !this._implementation.isReplacing) {
        for (i = 0; i < cnt; i++) {
            this.visit(nodes[i]);
        }
        return nodes;
    }

    // Replacing
    var out = [];
    for (i = 0; i < cnt; i++) {
        var evald = this.visit(nodes[i]);
        if (evald === undefined) { continue; }
        if (!evald.splice) {
            out.push(evald);
        } else if (evald.length) {
            this.flatten(evald, out);
        }
    }
    return out;
},
flatten: function(arr, out) {
    if (!out) {
        out = [];
    }

    var cnt, i, item,
        nestedCnt, j, nestedItem;

    for (i = 0, cnt = arr.length; i < cnt; i++) {
        item = arr[i];
        if (item === undefined) {
            continue;
        }
        if (!item.splice) {
            out.push(item);
            continue;
        }

        for (j = 0, nestedCnt = item.length; j < nestedCnt; j++) {
            nestedItem = item[j];
            if (nestedItem === undefined) {
                continue;
            }
            if (!nestedItem.splice) {
                out.push(nestedItem);
            } else if (nestedItem.length) {
                this.flatten(nestedItem, out);
            }
        }
    }

    return out;
}

}; module.exports = Visitor;

},{“../tree”:62}],92:[function(require,module,exports){ // shim for using process in browser

var process = module.exports = {}; var queue = []; var draining = false;

function drainQueue() {

if (draining) {
    return;
}
draining = true;
var currentQueue;
var len = queue.length;
while(len) {
    currentQueue = queue;
    queue = [];
    var i = -1;
    while (++i < len) {
        currentQueue[i]();
    }
    len = queue.length;
}
draining = false;

} process.nextTick = function (fun) {

queue.push(fun);
if (!draining) {
    setTimeout(drainQueue, 0);
}

};

process.title = 'browser'; process.browser = true; process.env = {}; process.argv = []; process.version = ''; // empty string to avoid regexp issues process.versions = {};

function noop() {}

process.on = noop; process.addListener = noop; process.once = noop; process.off = noop; process.removeListener = noop; process.removeAllListeners = noop; process.emit = noop;

process.binding = function (name) {

throw new Error('process.binding is not supported');

};

// TODO(shtylman) process.cwd = function () { return '/' }; process.chdir = function (dir) {

throw new Error('process.chdir is not supported');

}; process.umask = function() { return 0; };

},{}],93:[function(require,module,exports){ 'use strict';

var asap = require('asap')

module.exports = Promise; function Promise(fn) {

if (typeof this !== 'object') throw new TypeError('Promises must be constructed via new')
if (typeof fn !== 'function') throw new TypeError('not a function')
var state = null
var value = null
var deferreds = []
var self = this

this.then = function(onFulfilled, onRejected) {
  return new self.constructor(function(resolve, reject) {
    handle(new Handler(onFulfilled, onRejected, resolve, reject))
  })
}

function handle(deferred) {
  if (state === null) {
    deferreds.push(deferred)
    return
  }
  asap(function() {
    var cb = state ? deferred.onFulfilled : deferred.onRejected
    if (cb === null) {
      (state ? deferred.resolve : deferred.reject)(value)
      return
    }
    var ret
    try {
      ret = cb(value)
    }
    catch (e) {
      deferred.reject(e)
      return
    }
    deferred.resolve(ret)
  })
}

function resolve(newValue) {
  try { //Promise Resolution Procedure: https://github.com/promises-aplus/promises-spec#the-promise-resolution-procedure
    if (newValue === self) throw new TypeError('A promise cannot be resolved with itself.')
    if (newValue && (typeof newValue === 'object' || typeof newValue === 'function')) {
      var then = newValue.then
      if (typeof then === 'function') {
        doResolve(then.bind(newValue), resolve, reject)
        return
      }
    }
    state = true
    value = newValue
    finale()
  } catch (e) { reject(e) }
}

function reject(newValue) {
  state = false
  value = newValue
  finale()
}

function finale() {
  for (var i = 0, len = deferreds.length; i < len; i++)
    handle(deferreds[i])
  deferreds = null
}

doResolve(fn, resolve, reject)

}

function Handler(onFulfilled, onRejected, resolve, reject){

this.onFulfilled = typeof onFulfilled === 'function' ? onFulfilled : null
this.onRejected = typeof onRejected === 'function' ? onRejected : null
this.resolve = resolve
this.reject = reject

}

/**

* Take a potentially misbehaving resolver function and make sure
* onFulfilled and onRejected are only called once.
*
* Makes no guarantees about asynchrony.
*/

function doResolve(fn, onFulfilled, onRejected) {

var done = false;
try {
  fn(function (value) {
    if (done) return
    done = true
    onFulfilled(value)
  }, function (reason) {
    if (done) return
    done = true
    onRejected(reason)
  })
} catch (ex) {
  if (done) return
  done = true
  onRejected(ex)
}

}

},{“asap”:95}],94:[function(require,module,exports){ 'use strict';

//This file contains the ES6 extensions to the core Promises/A+ API

var Promise = require('./core.js') var asap = require('asap')

module.exports = Promise

/* Static Functions */

function ValuePromise(value) {

this.then = function (onFulfilled) {
  if (typeof onFulfilled !== 'function') return this
  return new Promise(function (resolve, reject) {
    asap(function () {
      try {
        resolve(onFulfilled(value))
      } catch (ex) {
        reject(ex);
      }
    })
  })
}

} ValuePromise.prototype = Promise.prototype

var TRUE = new ValuePromise(true) var FALSE = new ValuePromise(false) var NULL = new ValuePromise(null) var UNDEFINED = new ValuePromise(undefined) var ZERO = new ValuePromise(0) var EMPTYSTRING = new ValuePromise('')

Promise.resolve = function (value) {

if (value instanceof Promise) return value

if (value === null) return NULL
if (value === undefined) return UNDEFINED
if (value === true) return TRUE
if (value === false) return FALSE
if (value === 0) return ZERO
if (value === '') return EMPTYSTRING

if (typeof value === 'object' || typeof value === 'function') {
  try {
    var then = value.then
    if (typeof then === 'function') {
      return new Promise(then.bind(value))
    }
  } catch (ex) {
    return new Promise(function (resolve, reject) {
      reject(ex)
    })
  }
}

return new ValuePromise(value)

}

Promise.all = function (arr) {

var args = Array.prototype.slice.call(arr)

return new Promise(function (resolve, reject) {
  if (args.length === 0) return resolve([])
  var remaining = args.length
  function res(i, val) {
    try {
      if (val && (typeof val === 'object' || typeof val === 'function')) {
        var then = val.then
        if (typeof then === 'function') {
          then.call(val, function (val) { res(i, val) }, reject)
          return
        }
      }
      args[i] = val
      if (--remaining === 0) {
        resolve(args);
      }
    } catch (ex) {
      reject(ex)
    }
  }
  for (var i = 0; i < args.length; i++) {
    res(i, args[i])
  }
})

}

Promise.reject = function (value) {

return new Promise(function (resolve, reject) { 
  reject(value);
});

}

Promise.race = function (values) {

return new Promise(function (resolve, reject) { 
  values.forEach(function(value){
    Promise.resolve(value).then(resolve, reject);
  })
});

}

/* Prototype Methods */

Promise.prototype = function (onRejected) {

return this.then(null, onRejected);

}

},{“./core.js”:93,“asap”:95}],95:[function(require,module,exports){ (function (process){

// Use the fastest possible means to execute a task in a future turn // of the event loop.

// linked list of tasks (single, with head node) var head = {task: void 0, next: null}; var tail = head; var flushing = false; var requestFlush = void 0; var isNodeJS = false;

function flush() {

/* jshint loopfunc: true */

while (head.next) {
    head = head.next;
    var task = head.task;
    head.task = void 0;
    var domain = head.domain;

    if (domain) {
        head.domain = void 0;
        domain.enter();
    }

    try {
        task();

    } catch (e) {
        if (isNodeJS) {
            // In node, uncaught exceptions are considered fatal errors.
            // Re-throw them synchronously to interrupt flushing!

            // Ensure continuation if the uncaught exception is suppressed
            // listening "uncaughtException" events (as domains does).
            // Continue in next event to avoid tick recursion.
            if (domain) {
                domain.exit();
            }
            setTimeout(flush, 0);
            if (domain) {
                domain.enter();
            }

            throw e;

        } else {
            // In browsers, uncaught exceptions are not fatal.
            // Re-throw them asynchronously to avoid slow-downs.
            setTimeout(function() {
               throw e;
            }, 0);
        }
    }

    if (domain) {
        domain.exit();
    }
}

flushing = false;

}

if (typeof process !== “undefined” && process.nextTick) {

// Node.js before 0.9. Note that some fake-Node environments, like the
// Mocha test runner, introduce a `process` global without a `nextTick`.
isNodeJS = true;

requestFlush = function () {
    process.nextTick(flush);
};

} else if (typeof setImmediate === “function”) {

// In IE10, Node.js 0.9+, or https://github.com/NobleJS/setImmediate
if (typeof window !== "undefined") {
    requestFlush = setImmediate.bind(window, flush);
} else {
    requestFlush = function () {
        setImmediate(flush);
    };
}

} else if (typeof MessageChannel !== “undefined”) {

// modern browsers
// http://www.nonblocking.io/2011/06/windownexttick.html
var channel = new MessageChannel();
channel.port1.onmessage = flush;
requestFlush = function () {
    channel.port2.postMessage(0);
};

} else {

// old browsers
requestFlush = function () {
    setTimeout(flush, 0);
};

}

function asap(task) {

tail = tail.next = {
    task: task,
    domain: isNodeJS && process.domain,
    next: null
};

if (!flushing) {
    flushing = true;
    requestFlush();
}

};

module.exports = asap;

}).call(this,require('_process')) },{“_process”:92}],96:[function(require,module,exports){ // should work in any browser without browserify

if (typeof Promise.prototype.done !== 'function') {

Promise.prototype.done = function (onFulfilled, onRejected) {
  var self = arguments.length ? this.then.apply(this, arguments) : this
  self.then(null, function (err) {
    setTimeout(function () {
      throw err
    }, 0)
  })
}

} },{}],97:[function(require,module,exports){ // not “use strict” so we can declare global “Promise”

var asap = require('asap');

if (typeof Promise === 'undefined') {

Promise = require('./lib/core.js')
require('./lib/es6-extensions.js')

}

require('./polyfill-done.js');

},{“./lib/core.js”:93,“./lib/es6-extensions.js”:94,“./polyfill-done.js”:96,“asap”:95}]},{},[2])(2) });