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编辑当前文件:/home/rejoandoctor/public_html/node_modules/es5-ext/object/first-key.js
"use strict"; var value = require("./valid-value") , objPropertyIsEnumerable = Object.prototype.propertyIsEnumerable; module.exports = function (obj) { var i; value(obj); for (i in obj) { if (objPropertyIsEnumerable.call(obj, i)) return i; } return null; };