How to Use ES6 in node and ES6 in node

How to Use ES6 in node and ES6 in node

ES6 + is great, but many advanced functions node is not supported, you need to use babel to convert to ES5,

1. Install babel Dependencies

Npm install babel-core -- save-dev

2. Install babel-register

Npm install babel-register -- save-dev

3. babel conversion configuration. Add the. babelrc file to the project root directory.

{"Presets": ['es2015 ']}

At this time, we need to install the es6 conversion module. Note that babel does not help us directly convert the code. It requires a conversion module.

Npm install babel-preset-es2015 -- save-dev

4. Add the entry file index. js to the project root directory

Require ('babel-register '); require ('./app. js ')

Now all ES6 syntaxes can be used.

Test it below

App. js

Import express from 'express '; class Person {say () {console. log ('hello') ;}} let app = express (); app. get ('/', (res, req) =>{}) app. listen (3000, (res) => {new Person (). say ();});

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