text: 'use strict';
  
  var utils = require('./../utils');
  
  /**
   * 标准浏览器环境支持document.cookie
   * document.cookie="userId=828; userName=hulk";
   */
  module.exports = utils.isStandardBrowserEnv()
    ? // Standard browser envs support document.cookie
    (function standardBrowserEnv() {
      return {
        write: function write(name, value, expires, path, domain, secure) {
          var cookie = [];
          cookie.push(name + '=' + encodeURIComponent(value));
  
          /**
           * toGMTString 输出格式： Wed, 20 Jul 1983 17:15:00 GMT
           */
          if (utils.isNumber(expires)) {
            cookie.push('expires=' + new Date(expires).toGMTString());
          }
  
          if (utils.isString(path)) {
            cookie.push('path=' + path);
          }
  
          if (utils.isString(domain)) {
            cookie.push('domain=' + domain);
          }
  
          if (secure === true) {
            cookie.push('secure');
          }
  
          document.cookie = cookie.join('; ');
        },
  
        read: function read(name) {
          var match = document.cookie.match(
            new RegExp('(^|;\\s*)(' + name + ')=([^;]*)')
          );
          return match ? decodeURIComponent(match[3]) : null;
        },
  
        remove: function remove(name) {
          this.write(name, '', Date.now() - 86400000);
        }
      };
    })()
    : // 不支持 Non standard browser env (web workers, react-native) lack needed support.
    (function nonStandardBrowserEnv() {
      return {
        write: function write() {},
        read: function read() {
          return null;
        },
        remove: function remove() {}
      };
    })();
  