forEach.js

'use strict';

var forEachArray = require('./array/forEach'),
    forEachObject = require('./object/forEach');

/**
 * # ForEach
 *
 * A fast `.forEach()` implementation.
 *
 * @param  {Array|Object} subject     The array or object to iterate over.
 * @param  {Function}     fn          The visitor function.
 * @param  {Object}       thisContext The context for the visitor.
 */
module.exports = function fastForEach (subject, fn, thisContext) {
  if (subject instanceof Array) {
    return forEachArray(subject, fn, thisContext);
  }
  else {
    return forEachObject(subject, fn, thisContext);
  }
};