<%= shebang %> $stdout.sync = true

require “shellwords” require “yaml” require “socket”

ENV ||= “development” RAILS_ENV = ENV

ENV ||= RAILS_ENV NODE_ENV = ENV

APP_PATH = File.expand_path(“../”, __dir__) CONFIG_FILE = File.join(APP_PATH, “config/webpacker.yml”) NODE_MODULES_PATH = File.join(APP_PATH, “node_modules”) WEBPACK_CONFIG = File.join(APP_PATH, “config/webpack/#{NODE_ENV}.js”)

LISTEN_IP_ADDR = “0.0.0.0”

def args(key)

index = ARGV.index(key)
index ? ARGV[index + 1] : nil

end

begin

dev_server = YAML.load_file(CONFIG_FILE)[RAILS_ENV]["dev_server"]

HOSTNAME        = args('--host') || dev_server["host"]
PORT            = args('--port') || dev_server["port"]
HTTPS           = ARGV.include?('--https') || dev_server["https"]
DEV_SERVER_ADDR = "http#{"s" if HTTPS}://#{HOSTNAME}:#{PORT}"

rescue Errno::ENOENT, NoMethodError

$stdout.puts "Webpack dev_server configuration not found in #{CONFIG_FILE}."
$stdout.puts "Please run bundle exec rails webpacker:install to install webpacker"
exit!

end

begin

server = TCPServer.new(LISTEN_IP_ADDR, PORT)
server.close

rescue Errno::EADDRINUSE

$stdout.puts "Another program is running on port #{PORT}. Set a new port in #{CONFIG_FILE} for dev_server"
exit!

end

# Delete supplied host and port CLI arguments [“–host”, “–port”].each do |arg|

ARGV.delete(args(arg))
ARGV.delete(arg)

end

newenv = {

"NODE_PATH" => NODE_MODULES_PATH.shellescape,
"ASSET_HOST" => DEV_SERVER_ADDR.shellescape

}.freeze

if Gem.win_platform?

# Workaround for yarn not playing nicely with path separators
cmdline = ["#{NODE_MODULES_PATH}/.bin/webpack-dev-server", "--progress", "--color", "--config",

WEBPACK_CONFIG, “–host”, LISTEN_IP_ADDR, “–port”, PORT.to_s] + ARGV else

cmdline = ["yarn", "run", "webpack-dev-server", "--", "--progress", "--color", "--config",

WEBPACK_CONFIG, “–host”, LISTEN_IP_ADDR, “–port”, PORT.to_s] + ARGV end

Dir.chdir(APP_PATH) do

exec newenv, *cmdline

end