first draft of node.js REPL

src/coffee-script.coffee

@@ -0,0 +1,15 @@
+# Executes the `coffee` Ruby program to convert from CoffeeScript to JavaScript.
+
+sys: require('sys')
+
+exports.compile: (code, callback) ->
+  js: ''
+  coffee: process.createChildProcess 'coffee', ['--eval', '--no-wrap', '--globals']
+  coffee.addListener 'output', (results) ->
+    js += results if results?
+  coffee.addListener 'exit', ->
+    callback(js)
+  coffee.write(code)
+  coffee.close()
+
+

src/repl.coffee

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+# A CoffeeScript port/version of the Node.js REPL.
+
+# Required modules.
+coffee: require './coffee-script'
+process.mixin require 'sys'
+
+# Shortcut variables.
+prompt: 'coffee> '
+quit:   -> process.stdio.close()
+
+# The main REPL function. Called everytime a line of code is entered.
+readline: (code) -> coffee.compile code, run
+
+# Attempt to evaluate the command. If there's an exception, print it.
+run: (js) ->
+  try
+    val: eval(js)
+    p val if val isnt undefined
+  catch err
+    puts err.stack or err.toString()
+  print prompt
+
+# Start up the REPL.
+process.stdio.open()
+process.stdio.addListener 'data', readline
+print prompt