Using grunt for a custom Project

Question

I am using Grunt as "JS Task Runner".
Node is installed in "C:/Program Files".
NPM got installed in C:/users/Peterson/appdata/roaming/npm.
Grunt, Bower, and Grunt-cli inside npm folder.

Creating a project - D:/Project A.
Following files inside D:/ProjectA - "package.json" and gruntfile.js

package.json

{
  "name": "Test-Project",
  "version": "0.1.0",
  "devDependencies": {
    "grunt": "~0.4.1",
    "grunt-contrib-concat": "~0.1.3"
  }
}

gruntfile.js

module.exports = function(grunt) {

// Project configuration.
grunt.initConfig({

    //Read the package.json (optional)
    pkg: grunt.file.readJSON('package.json'),

    // Metadata.
    meta: {
        basePath: '../',
        srcPath: '../src/',
        deployPath: '../deploy/'
    },

    banner: '/*! <%= pkg.name %> - v<%= pkg.version %> - ' +
            '<%= grunt.template.today("yyyy-mm-dd") %>\n' +
            '* Copyright (c) <%= grunt.template.today("yyyy") %> ',

    // Task configuration.
    concat: {
        options: {
            stripBanners: true
        },
        dist: {
            src: ['<%= meta.srcPath %>scripts/fileone.js', '<%= meta.srcPath %>scripts/filetwo.js'],
            dest: '<%= meta.deployPath %>scripts/app.js'
        }
    }
});

// These plugins provide necessary tasks.
grunt.loadNpmTasks('grunt-contrib-concat');

// Default task
grunt.registerTask('default', ['concat']);

};

In CLI D:/ProjectA> grunt

Fatal Error: Unable to find local grunt

Can someone help?

Answer 1

You have installed node/npm and the clis of Grunt & Bower (installing them globally via npm install -g I assume)

What you're missing is to run npm install at the root of your project (where your package.json file is), to install your project dependencies specified in the package.json