3
var callable = require('./valid-callable')
4
, forEach = require('./for-each')
6
, call = Function.prototype.call;
8
module.exports = function (obj, cb/*, thisArg*/) {
9
var o = {}, thisArg = arguments[2];
11
forEach(obj, function (value, key, obj, index) {
12
if (call.call(cb, thisArg, value, key, obj, index)) o[key] = obj[key];