Modularized Gruntfile

Gruntfile.js

module.exports = function(grunt) {

  //Load private config if available
  try {
    app_config = grunt.file.readJSON('config.json');
  } catch (err) {
    console.log(
      "\n\nNo config file found. Some tasks may require config strings such as AWS keys or DB strings" +
      "Please create one based on config.sample.json\n\n"
    );
  }

  // Initialize package config.
  grunt.initConfig({
    pkg: require('./package.json'),
  });

  // Load per-task config from tasks folder.
  grunt.loadTasks('tasks');

};

task.js

module.exports = function (grunt) {
  var pkg = grunt.config.get('pkg');

  grunt.config('concat', {
    js: {
      src: pkg.js,
      dest: 'output/js.js',
    },
    sass: {
      src: [
        pkg.sass
      ],
      dest: "temp/style.scss"
    }
  });

  grunt.loadNpmTasks('grunt-contrib-concat');

};