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Task-Based Build System

Gear.js is a scriptable build system using simple tasks that act like a sequence of piped commands.

Features include:

  • Runs in Node and the browser.
  • Basic building blocks that can be combined to perform complex builds.
  • Tasks are simply defined and keep system internals to a minimum.
  • Asynchronous execution.
  • Extensible task loading via NPM, file, or directory.
  • Advanced flow control for complex task execution.


To get the most out of Gear.js, you will want to install gear-lib which contains tasks for linting, minifying, and deploying JS/CSS assets.

$ npm install gear
$ npm install gear-lib

Quick Examples

Chaining Tasks

new Queue()
 .log('read foo.js')

Execute Tasks Using Array Style

new Queue()
 .read(['foo.js', {name: 'bar.js'}, 'baz.js'])
 .log('read foo.js')
 .write(['newfoo.js', 'newbar.js']) // Not writing 'baz.js'

Parallel Task Execution

new Queue()
 .log('Parallel Tasks')
    read:     {task: ['read', ['foo.js', 'bar.js', 'baz.js']]},
    combine:  {requires: 'read', task: 'concat'},
    minify:   {requires: 'combine', task: 'jsminify'},
    print:    {requires: 'minify', task: 'inspect'}, // Runs when read, combine, and minify complete
    parallel: {task: ['log', "Hello Gear.js world!"]} // Run parallel to read
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