nltco-load-grunt-parent-tasks/index.js

For debugging. Original Author: Larry Gordon

'use strict';
var path = require('path');

/**
 * Returns the element as an array.
 * @method  toArray
 * @param   {*}  el  An array or any other data type.
 * @return  {Array}  The element as an array.
 */
function toArray(el) {
  return Array.isArray(el) ? el : [el];
}

/**
 * Creates a resolution for loading a package.json file.
 * @method  resolveConfig
 * @param   {String|Object}  config  The location of a package.json or the contents of the package.json.
 * @return  {Object}         The contents of the package.json.
 */
function resolveConfig(config) {
  if (typeof config === 'string') {
    return require(path.resolve(config));
  }
  return config;
}

function loadGruntParentTasks(grunt, options) {
  var log = function() {
    grunt.verbose.writeln(['[loadGruntParentTasks]'.magenta].concat(Array.prototype.slice.call(arguments)).join(' '));
  };

  options = options || {};

  var _ = require('lodash');
  var findup = require('findup-sync');
  var globule = require('globule');

  var config = resolveConfig(options.config || findup('package.json'));
  var pattern = toArray(options.pattern || ['grunt-*']);
  var scope = toArray(options.scope || ['dependencies', 'optionalDependencies']);

  var gruntCollection = path.resolve('./node_modules/', (options.module || 'grunt-collection'));
  var gruntCollectionJson = path.join(gruntCollection, 'package.json');

  var newPkg = {};
  var names = [];
  var deps = {};

  pattern.push('!grunt', '!grunt-cli');

  names = scope.reduce(function (result, prop) {
    deps[prop] = {};
    return result.concat(Object.keys(config[prop] || {}));
  }, []);

  // Create a new depenencies object of grunt tasks to load based on the
  // globbing pattern and scope.
  globule.match(pattern, names).map(function(name) {
    scope.forEach(function (prop) {
      if (config[prop] && config[prop][name]) {
        deps[prop][name] = config[prop][name];
      }
    });
  });

  newPkg = _.assign({}, config, {
    keywords: [ 'gruntcollection' ],
    scripts: {}
  }, deps);

  log('Writing: ' + ('' + gruntCollectionJson).cyan);
  grunt.file.mkdir(gruntCollection);
  grunt.file.write(gruntCollectionJson, JSON.stringify(newPkg, null, 2));
  log('loadNpmTasks: ' + 'grunt-collection'.cyan);
  grunt.loadNpmTasks('grunt-collection');
}

module.exports = loadGruntParentTasks;