无法导出类

我正在为自己编写一个简单的 fetch 包装器。按照计划，应该有一个Call具有两个静态方法的类 -get和post.

我试着这样写：

var fetch = require('node-fetch');

class Call {
  static async get(url, params = {}) {
    ...
  }
  static async post(url, params = {}) {
    ...
  }
}

module.export = Call; 

像这样：

var fetch = require('node-fetch');

module.export = {
  get: async (url, params = {}) => {
    ...
  },
  post: async (url, params = {}) => {
    ...
  }
}

我正在尝试使用：

const Call = require('./utils/call');
console.log(Call.get('https://jsonplaceholder.typicode.com/posts'));

我得到：

console.log(Call.get('https://jsonplaceholder.typicode.com/posts'));
                 ^

TypeError: Call.get is not a function
    at Object.<anonymous> (/Users/ilabizunov/Events/server/parser/parser.js:5:18)
    at Module._compile (module.js:612:30)
    at Object.Module._extensions..js (module.js:623:10)
    at Module.load (module.js:531:32)
    at tryModuleLoad (module.js:494:12)
    at Function.Module._load (module.js:486:3)
    at Function.Module.runMain (module.js:653:10)
    at startup (bootstrap_node.js:187:16)
    at bootstrap_node.js:608:3