after-build.js #1

'use strict';

const Noop = require('./utils/noop');

/**
 * Returns a new tree that causes a callback to be called after every build of
 * the passed inputTree
 *
 * @example
 *
 * const tree = find('zoo/animals/*.js');
 *
 * tree = stew.afterBuild(tree, function(outputDir) {
 *   // Whatever debugging you'd like to do. Maybe mess with outputDir or maybe
 *   // debug other state your Brocfile contains.
 * });
 *
 *
 * @param  {String|Object} tree    The desired input tree
 * @param  {Function} callback     The function to call after every time the tree is built
 */
module.exports = function afterBuild(tree, build) {
  if (typeof build !== 'function') {
    throw new Error('No callback passed to stew.afterBuild');
  }

  return new Noop(tree, { build });
};