register.coffee

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  browser.coffee cake.coffee coffeescript.coffee command.coffee grammar.coffee helpers.coffee index.coffee lexer.coffee nodes.coffee optparse.coffee register.coffee repl.coffee rewriter.coffee scope.litcoffee sourcemap.litcoffee

- # register.coffee

- ¶

      CoffeeScript  = require './'
      child_process = require 'child_process'
      helpers       = require './helpers'
      path          = require 'path'

- ¶

  Load and run a CoffeeScript file for Node, stripping any `BOM`s.

      loadFile = (module, filename) ->
        answer = CoffeeScript._compileFile filename, no, yes
        module._compile answer, filename

- ¶

  If the installed version of Node supports `require.extensions`, register CoffeeScript as an extension.

      if require.extensions
        for ext in CoffeeScript.FILE_EXTENSIONS
          require.extensions[ext] = loadFile

- ¶

  Patch Node’s module loader to be able to handle multi-dot extensions. This is a horrible thing that should not be required.

        Module = require 'module'

        findExtension = (filename) ->
          extensions = path.basename(filename).split '.'

- ¶

  Remove the initial dot from dotfiles.

          extensions.shift() if extensions[0] is ''

- ¶

  Start with the longest possible extension and work our way shortwards.

          while extensions.shift()
            curExtension = '.' + extensions.join '.'
            return curExtension if Module._extensions[curExtension]
          '.js'

        Module::load = (filename) ->
          @filename = filename
          @paths = Module._nodeModulePaths path.dirname filename
          extension = findExtension filename
          Module._extensions[extension](this, filename)
          @loaded = true

- ¶

  If we’re on Node, patch `child_process.fork` so that Coffee scripts are able to fork both CoffeeScript files, and JavaScript files, directly.

      if child_process
        {fork} = child_process
        binary = require.resolve '../../bin/coffee'
        child_process.fork = (path, args, options) ->
          if helpers.isCoffee path
            unless Array.isArray args
              options = args or {}
              args = []
            args = [path].concat args
            path = binary
          fork path, args, options