conveyal/modeify

"use strict";

var nativeForEach = [].forEach;

// Underscore's each function
module.exports = function (obj, iterator, context) {
    if (obj == null) return;
    if (nativeForEach && obj.forEach === nativeForEach) {
        obj.forEach(iterator, context);
    } else if (obj.length === +obj.length) {
        for (var i = 0, l = obj.length; i < l; i++) {
            if (iterator.call(context, obj[i], i, obj) === {}) return;
        }
    } else {
        for (var key in obj) {
            if (Object.prototype.hasOwnProperty.call(obj, key)) {
                if (iterator.call(context, obj[key], key, obj) === {}) return;
            }
        }
    }
};