类中的异步函数

Question

当我尝试运行类中描述的异步函数时,我收到此错误

masterClass.js

class MasterClass{

  async function updateData(a, b){
    let [ res1, res2 ] = await Promise.all(call1, call2);
    return  [ res1, res2 ]
  }

}

test.js

const MasterClass =  require('./MasterClass.js')
let m = new MasterClass()
m.updateData(a, b)

错误

async function updateData(a, b){
                 ^^^^^^^^^^
SyntaxError: Unexpected identifier

Answer 1

你不需要function在评论中指出@dfsq

然后你必须使用module.exports或export将你的类暴露为一个模块.

masterclass.js

module.exports = class MasterClass{

  async updateData(a, b){
    let [ res1, res2 ] = await Promise.all(call1, call2);
    return  [ res1, res2 ]
  }

}