commonjsify

[](https://david-dm.org/arielschiavoni/ commonjsify#info=devDependencies)

Browserify transform for non CommonJS libraries/scripts.

Table of Contents generated with DocToc

• Install
• Options
• Usage
  • Basic example
  • Advanced and more practical example
• Contributing
  • Style-Guide
• License

Install

With npm do:

$ npm install commonjsify --save-dev

Options

commonjsify accepts a configuration object and returns the transform function to be applied with browserify.

var commonjsify = require('commonjsify');
var options = {};
var transform = commonjsify(options);

options is an object that you have to fill with some information about the non CommonJS modules that you want to convert to CommonJS. The format for this object is:

• key - must be the same as the filename that you are requiring with browserify.require(filename, opts) without extension (it is a convention)
• value - defines how you want to export the module (depends on the library that you are trying to transform to CommonJS)

Example: If you want to transform angular to CommonJS you can configure it like this:

var browserify = require('browserify');
var commonjsify = require('commonjsify');
// key: angular --> because we require ./vendor/angular.js
// value: angular --> because angular is the global variable that the library creates
// and we must export
var options = {
  angular: 'angular'
};

browserify()
.require(require.resolve('./vendor/angular.js'), {entry: true, expose: 'angular'})
.transform(commonjsify(options))
.bundle()
.pipe(fs.createWriteStream(__dirname + '/bundle.js'))

Usage

Basic example

'use strict';

var browserify = require('browserify');
var fs = require('fs');

browserify()
.require(require.resolve('./vendor/lib.js'), {entry: true, expose: 'myLib'})
.transform(commonjsify({
  'lib': 'lib'
}))
.bundle()
.pipe(fs.createWriteStream(__dirname + '/bundle.js'))

Then in your page you can do:

<script src="bundle.js"></script>
<script>
  var myLib = require('myLib');
  /* ... */
</script>

Advanced and more practical example

The following example shows how you can use commonjsify to transform angular and angular-ui-router which are non CommonJS modules. This scenario is particularly useful when you want to get rid of bower dependencies and just use npm (see Front-end Tooling Workflows by Addy Osmani) as the only source of true for your packages.

The code below shows a gulp task to create multiple bundles, one for vendor and another for the application itself.

'use strict';

var gulp = require('gulp');
var browserify = require('browserify');
var commonjsify = require('commonjsify');
var stringify = require('stringify');
var source = require('vinyl-source-stream');
var production = (process.env.NODE_ENV === 'production');

gulp.task('bundle', ['bundle-vendor', 'bundle-app']);

gulp.task('bundle-vendor', 'Bundle JavaScript vendor', function() {
  browserify({
    noParse: true,
    debug: !production
  })
  .require(require.resolve('angular'), {entry: true, expose: 'angular'})
  .require(require.resolve('angular-ui-router'), {expose: 'ui.router'})
  .transform(commonjsify({
    'angular': 'angular',
    'angular-ui-router': 'angular.module(\'ui.router\')'
  }))
  .bundle()
  .pipe(source('vendor.js'))
  .pipe(gulp.dest('./dist/'));
});

gulp.task('bundle-app', 'Bundle JavaScript modules', function() {
  browserify({
    entries: './src/app.js',
    debug: !production
  })
  .transform(stringify({
    extensions: ['.html'],
    minify: true
  }))
  .external('angular')
  .external('ui.router')
  .bundle()
  .pipe(source('app.js'))
  .pipe(gulp.dest('./dist/'));
});

Then in your page you can do:

<script src="vendor.js"></script>
<script src="app.js"></script>
<script>
  var angular = require('angular');
  var uiRouter = require('ui.router');
  console.log(uiRouter.name);

  var appVersion = angular.injector(['app']).get('version');
  console.log(appVersion);
  /* ... */
</script>

Contributing

If you would like to contribute code, please do the following:

1. Fork this repository and make your changes.
2. Write tests for any new functionality. If you are fixing a bug that tests did not cover, please make a test that reproduces the bug.
3. Add your name to the "contributors" section in the package.json file.
4. Squash all of your commits into a single commit via git rebase -i.
5. Run the tests by running npm install && npm test from the source directory.
6. Assuming those pass, send the Pull Request off to me for review!

Please do not iterate the package.json version number – I will do that myself when I publish it to NPM.

Style-Guide

Please follow google style-guide for all code contributions.

License

MIT