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    Manifest based script concatenation. Inspired by Sprockets.

    Getting Started

    This plugin requires Grunt ^0.4.5.

    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-manifest-concat --save-dev

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




    Add a section named manifest inside grunt.initConfig in your Gruntfile.

        manifest: {
            dist: {
                src: 'js',
                dest: 'build'

    When this task is run It will search for *.json files inside the src directory, process those files and follow their directives to finally output the concatenated result to the dest directory.

    Manifest Files

    This is the basic structure of a manifest file:

      "contents": [
        { "require_tree": "vendor" },
        { "require_directory": "lib/modules" },

    The directives are defined inside the contents array, where the key is the directive type, and the value is the directive subject.

    General Behaviour Notes


    All paths are case sensitive and relative to the manifest file. It's possible to use absolute paths. URLs to remote resources are not supported.


    The order sprcified inside contents will be preserved, and while require_directory and require_tree take the files alphabethically It's possible to use mix the require if you need a specific file to be added first.

      "contents": [
        { "require_directory": "lib/modules/models" },
        { "require_tree": "lib/modules" }

    Content Duplication

    It was decided not to implement the include directive as grunt-contrib-concat tasks will get rid of any duplicated files and keep each file once, the first time they appear.

    Clashing Manifest Names

    It's recommended to have unique names for manifests as they can overwrite each other during the output process.


    Options can be set inside the task definition on the Gruntfile or can be added directly to the manifest files, for more granular control.


    Type: Boolean Default: false

    Tells grunt-contrib-concat tasks to generate the sourceMap.


    Type: Boolean Default: false

    Tells grunt-contrib-concat tasks to include a banner. The banner cannot be customized and includes the name of the manifest as a single line comment.

    // Manifest: js/vendor.json


    Type: String Default: "js"

    The extension dictates what type of files are found by the require_directory and required_tree directives and will also be used to construct the result file for each manifest <manifest name>.<extension>.


    Type: String Default: ""

    Gives the option of setting a shared base path for all contents. Only some directives can take advantage of this feature.


    Type: String Default: Read from Gruntfile

    It's possible to override the dest value for each individual manifest file by using this option. It can be a directory or a file with an extension matching the extension option.

    Available Directives


    Subject: File (cwd aware)

    Inserts the contents of a file. If a file is required multiple times It will only appear once. It can be specified either by using a string that contains the path or by providing an object:

      "options": {
        "cwd": "vendor"
      "contents": [
        { "require": "jquery.history.js" }


    Subject: Directory

    Inserts the contents of all files inside the given path. Files are matched based by extension and are required in alphabethical order.

      "contents": [
        { "require_directory": "vendor/modules" }


    Subject: Directory

    Works like require_directory but It recursively search for files inside the given path.

      "contents": [
        { "require_tree": "vendor" }


    npm i grunt-manifest-concat

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