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/home/yanggyein/yanggyein/yang_ai/node_modules/es5-ext/object/copy.js
"use strict"; var aFrom = require("../array/from") , assign = require("./assign") , value = require("./valid-value"); module.exports = function (obj/*, propertyNames, options*/) { var copy = Object(value(obj)), propertyNames = arguments[1], options = Object(arguments[2]); if (copy !== obj && !propertyNames) return copy; var result = {}; if (propertyNames) { aFrom(propertyNames, function (propertyName) { if (options.ensure || propertyName in obj) result[propertyName] = obj[propertyName]; }); } else { assign(result, obj); } return result; };