jspackage

Client side build tool with dependency management

Ever wanted to have an #import statement in your favorite language which compiles into JavaScript that works like #include in other languages? Well now you have one! Importing files and concatenating them in the right place is now as easy as:

#import "some_js_file"
#import "another_one"
#import "even_coco_is_supported"
#import "and_livescript"

# some code using the imported files here...

In JavaScript, the //import directive is used instead of #import.

Be sure to install the languages you wish to use with npm install -g.

Features

• File extensions are optional and will be automatically resolved if not included.
  • In fact it is recommended to never use file extensions when importing.
• Files will only be included once in the resulting code, regardless of how many times a file is imported.
• If used as a server, only modified files will be recompiled on subsequent requests.
• Compiling CoffeeScript, JavaScript, Coco, and LiveScript source files are included out of the box. You can add more to the compile.extensions object.
  • Or add support to the bottom of src/jspackage.coffee and submit a pull request.

Command line usage

When installed with npm install jspackage -g, a command line tool called jspackage will be made available.

Usage: jspackage input_file [output_file] [options]

Available options:
  -h, --help          shows this help section
  -p, --port NUMBER   start a server to serve the file on this port
  -b, --bare          compile without a top-level function wrapper

If an output file is not provided, a server will be started at
the port provided by the --port or -p option or 8080 by default.

Server example

http = require 'http'
{compile} = require 'jspackage'

server = http.createServer (req, res) ->
 res.writeHead(200)

 compile 'mainfile', (err, code) ->
   if err
     res.end 'throw unescape("' + escape(err.toString()) + '");'
   else
     res.end code

server.listen(8080)

Out-of-the-box supported languages

• JavaScript
• Coffee-Script
• LiveScript
• Coco

To add out-of-the-box support for another language, add it to the bottom of src/jspackage.coffee and submit a pull request.

To add support by wrapping the code, add an entry to the extensions object:

{extensions} = require 'jspackage'
extensions['.lua'] =
  compile: (code) -> lua.compile(code)
  import_re: /^--import (".+")$/gm

Developing jspackage

To compile and watch:

coffee -wco . src/

To run the tests:

npm test

License

Licensed under the MIT license.