nodejs 的一步调用经历了，callback -> promise -> async await（语法糖） 模式的转变
以下是几个整理
util 工具包
const util = require("util")
function login({name,age},cb) {
cb(null,{name,age});
}
const fn = util.promisify(login);
(async () => {
let result = await fn({
name:"dalong",
age:333
})
console.log(result)
})()
一个很不错的callback -> promise 转换处理
const pify = require("pify")
function login({name,age},cb) {
cb(null,{name,age});
}
const fn = pify(login);
(async () => {
let result = await fn({
name:"dalong",
age:333
})
console.log(result)
})()
这个工具就更方便了可以，callback -> promise-> 也可以promise-> promise
const universalify = require("universalify");
function login({name,age},cb) {
cb(null,{name,age});
}
const fn = universalify.fromCallback(login);
(async()=>{
const result = await fn({
name:"dalong",
age:333
})
console.log(result)
})()
promise -> promise
const universalify = require("universalify");
async function promiseFn({name,age}){
return {
name,
age,
version:"v2"
}
};
const fn = universalify.fromPromise(promiseFn);
?
(async()=>{
const result = await fn({
name:"dalong",
age:333
})
console.log(result)
})()
## 说明
以上是几个整理，实际上类似的npm 包还是很多的，可以通过npm官方仓库查找相关的
https://www.npmjs.com/package/universalify
https://www.npmjs.com/package/pify
nodejs 几个不错的callback 以及promise 转换处理工具
原文：https://www.cnblogs.com/rongfengliang/p/13092538.html