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> Grunt task for Chrome manifest.json


Grunt task for Chrome manifest.json

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, install this plugin with this command:

npm install grunt-chrome-manifest --save-dev

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

grunt.registerTask('default', ['chromeManifest:dist']);

chrome-manifest is composed of 3 steps:

  • prepare: detects background and content_script javascript and css files in manifest and update the grunt config to run concat cssmin and uglify.
    • content_scripts javascript files and excluded 'background' javascript files does not perform the concat task.
  • buildnumber: detects buildnumber and increased if set to true.
  • cleanup: detects javascripts files for develop in manifest and remove them from manifest.json for distribution.
chromeManifest: {
  dist: {
    options: {
      buildnumber: 'both',
      background: {
        target: 'scripts/background.js',
        exclude: [
    src: 'app',
    dest: 'dist',
    manifest: 'app/manifest.json'

Required Type: String

Base directory where the origin source files

Required Type: String

Base directory where the transformed files should be output.

Type: String

Path of the source of manifest.json. If it's not set the plugin will be going to read manifest.json in src path

Type: String Boolean Default: undefined, false

Auto-increment types. Can be:

  • dest: increase build number in dest only
  • both: increase build number in both origin and dest
  • String: version in this format
  • undefined, false: do not increase build number
  • target: String, Relative path of the transformed(cssmin and uglify) background script.
  • exclude: String, Javascript files to exclude.

Type: Object Default: undefined

Overwrite in manifest keys from object.

Type: Array[String] Default: ['key']

Remove fields from manifest.json. The key field is removed by default as it is not allowed by the chrome webstore.

Grunt currently doesn't have a way to test tasks directly. You can test this task by running grunt and manually verify that it works.

BSD license and copyright Google