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-mozilla-addon-sdk --save-dev

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

grunt.loadNpmTasks('grunt-mozilla-addon-sdk');

The "mozilla-addon-sdk" tasks

Overview

In your project's Gruntfile, add a section named mozilla-addon-sdk to the data object passed into grunt.initConfig() to define a Mozilla Addon SDK to download and use.

grunt.initConfig({
  "mozilla-addon-sdk": {
    '1_14': {
      options: {
        revision: "1.14"
      }
    },
    'master': {
      options: {
        revision: "master",
        github: true,
        // github_user: "mozilla" // default value
      }
    }
  },
  "mozilla-cfx-xpi": {
    'stable': {
      options: {
        "mozilla-addon-sdk": "1_14",
        extension_dir: "ff_extension",
        dist_dir: "tmp/dist-stable"
      }
    },
    'experimental': {
      options: {
        "mozilla-addon-sdk": "master",
        extension_dir: "ff_extension",
        dist_dir: "tmp/dist-experimental"
      }
    },
  },
  "mozilla-cfx": {
    'run_stable': {
      options: {
        "mozilla-addon-sdk": "1_14",
        extension_dir: "ff_extension",
        command: "run"
      }
    },
    'run_experimental': {
      options: {
        "mozilla-addon-sdk": "master",
        extension_dir: "ff_extension",
        command: "run"
      }
    }
  }
});

Custom cfx command could be defined using a section named mozilla-cfx:

grunt.initConfig({
  "mozilla-addon-sdk": {
    "1_14": {
      ...
    }
  },
  "mozilla-cfx": {
    custom_command: {
      options: {
        "mozilla-addon-sdk": "1_14",
        extension_dir: "ff_extension",
        command: "run",
        arguments: "-b /usr/bin/firefox-nightly -p /tmp/PROFILE_REUSED"
      }
    }
  }
})

NOTE: all tasks use FIREFOX_BIN and FIREFOX_PROFILE environment variables, if defined, to customize the Firefox binary and Firefox profile dir used to run or test the extension.

mozilla-addon-sdk

"mozilla-addon-sdk" is a grunt multi-task which supports the following task options

revision

Type: String Default value: undefined

A string value that is used as the Mozilla Addon SDK revision to download and use to build addon xpi.

github

Type: Bool Default value: false

A boolean value used to download a Mozilla Addon SDK from a github repo archive.

By default its value is false (addon-sdk archive downloaded from official ftp.mozilla.org releases), set it to true if you want to use a development release from github.

github_user

Type: String Default value: mozilla

A string value used as Github User for addon-sdk github archive to downloads, it could be used to use a different github fork of the original mozilla addon-sdk repo.

mozilla-cfx-xpi

"mozilla-addon-sdk" is a grunt multi-task which builds addon xpi archives using the available addon-sdk revisions.