helpers.js

var path = require('path');


// Helper functions
var _root = path.resolve(__dirname, '..');

console.log('root directory:', root());

function hasProcessFlag(flag) {
  return process.argv.join('').indexOf(flag) > -1;
}

function root(args) {
  args = Array.prototype.slice.call(arguments, 0);
  return path.join.apply(path, [_root].concat(args));
}

function rootNode(args) {
  args = Array.prototype.slice.call(arguments, 0);
  return root.apply(path, ['node_modules'].concat(args));
}

function prependExt(extensions, args) {
  args = args || [];
  if (!Array.isArray(args)) {
    args = [args]
  }
  return extensions.reduce(function (memo, val) {
    return memo.concat(val, args.map(function (prefix) {
      return prefix + val;
    }));
  }, ['']);
}

function packageSort(packages) {
  var len = packages.length - 1;
  var first = packages[0];
  var last = packages[len];
  return function sort(a, b) {
    var i = packages.indexOf(a.names[0]);
    var j = packages.indexOf(b.names[0]);
    if (i > j) {
      return 1
    } else if (i == j) {
      return 0
    } else return -1;
  }
}

function reverse(arr) {
  return arr.reverse();
}

exports.reverse = reverse;
exports.hasProcessFlag = hasProcessFlag;
exports.root = root;
exports.rootNode = rootNode;
exports.prependExt = prependExt;
exports.prepend = prependExt;
exports.packageSort = packageSort;