function getStackTrace() {

var stack;
try {
  throw new Error('');
}
catch (error) {
  stack = error.stack || '';
}
stack = stack.split('\\n').map(function (line) {
  return line.trim();
});
return stack.splice(stack[0] == 'Error' ? 2 : 1);

};

function printError(functionName){

console.error(functionName + ' is not defined for execJS. See https://github.com/sstephenson/execjs#faq. Note babel-polyfill may call this.');
console.error(getStackTrace().join('\\n'));

};

function setTimeout() {

printError('setTimeout');

};

function clearTimeout() {

printError('clearTimeout');

};