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-
- var hasOwn = Object.prototype.hasOwnProperty;
- var toString = Object.prototype.toString;
-
- module.exports = function forEach (obj, fn, ctx) {
- if (toString.call(fn) !== '[object Function]') {
- throw new TypeError('iterator must be a function');
- }
- var l = obj.length;
- if (l === +l) {
- for (var i = 0; i < l; i++) {
- fn.call(ctx, obj[i], i, obj);
- }
- } else {
- for (var k in obj) {
- if (hasOwn.call(obj, k)) {
- fn.call(ctx, obj[k], k, obj);
- }
- }
- }
- };
-
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