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promisify-es6
Advanced tools
NOTE: Starting from Node.js v.8.0.0, the promisify method is now included in the util
native library.
On Node.js, the usage of the native method is recommended!
// Native promisify example
const util = require('util');
const readfile = util.promisify(fs.readFile);
npm i --save promisify-es6
or
git clone https://github.com/manuel-di-iorio/promisify-es6.git
var promisify = require("promisify-es6");
var fs = require("fs");
var readFile = promisify(fs.readFile);
readFile("test.js")
.then(function(content) {
console.log(content.toString());
})
.catch(function(err) {
console.error(err);
});
A promisified function is still callable with the callback style:
readFile("test.js", function(err, content) { //etc...
You can even promisify entire modules or arrays:
var readFile = promisify(require("fs")).readFile;
promisify(method[, options])
*Method* can be a function or an array/map of functions to promisify
*Options* can have the following properties:
`context`: The context which to apply the called function (by default is the function itself)
`replace`: When an array/map is passed and this is truthy, it will replace the original object
npm test
FAQs
Promisify callback-style functions to ES6 promises
The npm package promisify-es6 receives a total of 8,144 weekly downloads. As such, promisify-es6 popularity was classified as popular.
We found that promisify-es6 demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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