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About the developer

aaronfrost
206 Stars 35 Forks MIT License 135 Commits 6 Opened issues

Description

This is a grunt task for adding a grunt task to compiler ES6 JS into ES3 JS using Traceur Compiler

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published the 0.5.0 release to npmjs.org

grunt-traceur

Build Status

A grunt plugin for Google's Traceur-Compile, a lib to compile ES6 JavaScript into ES5 JavaScript.

Getting Started

This plugin requires Grunt

~0.4.0

If you haven't used Grunt before, be sure to check out the Getting Started guide, as it explains how to create a Gruntfile as well as install and use Grunt plugins. Once you're familiar with that process, you may install this plugin with this command:

npm install grunt-traceur --save-dev

One the plugin has been installed, it may be enabled inside your Gruntfile with this line of JavaScript:

grunt.loadNpmTasks('grunt-traceur');

The "traceur" task

Overview

In your project's Gruntfile, add a section named

traceur
to the data object passed into
grunt.initConfig()
.
grunt.initConfig({
  traceur: {
    options: {
      // traceur options here
      experimental: true,
      // module naming options,
      moduleNaming: {
        stripPrefix: "src/es6",
        addPrefix: "com/mycompany/project"
      },
      copyRuntime: 'src/es5'
    },
    custom: {
      files: [{
        expand: true,
        cwd: 'src/es6',
        src: ['*.js'],
        dest: 'src/es5'
      }]
    },
  },
})

Once the files have been transpiled into ES5, you can minify or concat them.

Options

Any specified option will be passed through directly to traceur, thus you can specify any option that traceur supports.

Some common options:

  • experimental
    - Turn on all experimental features
  • blockBinding
    - Turn on support for
    let
    and
    const
  • copyRuntime
    - Copies the traceur_runtime.js to the location which you specify here
  • moduleNames
    - Generate named module (default: true)
  • moduleNaming.stripPrefix
    - Strip the specified prefix from generated module names
  • moduleNaming.addPrefix
    - Add the specified prefix to the generated module names (applied AFTER the
    moduleNaming.stripPrefix
    option)

Contributing

In lieu of a formal styleguide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code using Grunt.

Release History

(Nothing yet)

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