| 123456789101112131415161718192021222324 | 'use strict';module.exports = {  isObject: function(obj) {    var type = typeof obj;    return type === 'function' || type === 'object' && !!obj;  }, extend: function(obj) {    if (!this.isObject(obj)) {      return obj;    }    var source, prop;    for (var i = 1, length = arguments.length; i < length; i++) {      source = arguments[i];      for (prop in source) {        if (Object.prototype.hasOwnProperty.call(source, prop)) {          obj[prop] = source[prop];        }      }    }    return obj;  }};
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