https://github.com/jiangjie/promisetoasync

Convert promise to async function.
https://github.com/jiangjie/promisetoasync

async promise

Last synced: about 2 months ago
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Convert promise to async function.

• Host: GitHub
• URL: https://github.com/jiangjie/promisetoasync
• Owner: JiangJie
• License: gpl-3.0
• Created: 2018-09-28T15:37:18.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2019-08-27T01:59:16.000Z (over 5 years ago)
• Last Synced: 2024-04-24T04:29:09.648Z (8 months ago)
• Topics: async, promise
• Language: JavaScript
• Size: 30.3 KB
• Stars: 1
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# PromiseToAsync

[![NPM version](https://img.shields.io/npm/v/promise-to-async.svg?style=flat-square)](https://www.npmjs.com/package/promise-to-async)

[![Build Status](https://travis-ci.org/JiangJie/PromiseToAsync.svg?branch=master)](https://travis-ci.org/JiangJie/PromiseToAsync)

[![Coverage Status](https://coveralls.io/repos/github/JiangJie/PromiseToAsync/badge.svg?branch=master)](https://coveralls.io/github/JiangJie/PromiseToAsync?branch=master)

[![GitHub license](https://img.shields.io/github/license/JiangJie/PromiseToAsync.svg)](https://github.com/JiangJie/PromiseToAsync/blob/master/LICENSE)

[![devDependencies Status](https://david-dm.org/JiangJie/PromiseToAsync/dev-status.svg)](https://david-dm.org/JiangJie/PromiseToAsync?type=dev)

[![npm](https://img.shields.io/npm/dt/promise-to-async.svg)](https://www.npmjs.com/package/promise-to-async)

[![NPM](https://nodei.co/npm/promise-to-async.png?downloads=true)](https://nodei.co/npm/promise-to-async/)

Convert promise or promisify function to async function.

The new async function will return `[err, res]`, like nodejs callback style.

## Install

```javascript

npm install promise-to-async --save

```

## Example

```javascript

import PromiseToAsync from 'promise-to-async';

(async () => {

    const promise = Promise.resolve('promise resolved');

    const [err, res] = await PromiseToAsync(promise);

    console.assert(err === null);

    console.assert(res === 'promise resolved');

})();

(async () => {

    const util = require('util');

    const fs = require('fs');

    const promise = util.promisify(fs.readdir)('/');

    const [err, res] = await PromiseToAsync(promise);

})();

// same as

(async () => {

    const util = require('util');

    const fs = require('fs');

    const readdir = PromiseToAsync(util.promisify(fs.readdir));

    const [err, res] = await readdir('/');

})();

```

Or by inject.

```javascript

import PromiseToAsync from 'promise-to-async';

// inject

PromiseToAsync.injectAsyncMethod('two'); // method name default is two

(async () => {

    const promise = Promise.resolve('promise resolved');

    const [err, res] = await promise.two();

    console.assert(err === null);

    console.assert(res === 'promise resolved');

})();

```