Unable to run a node.js file with @babel/preset-env

Question

I'm trying to run a simple node.js file which needs the @babel/preset-env preset. The moment I run the js file, I get a message saying

Requires Babel “7.0.0-0” but was loaded with “6.26.3”

To replicate the issue, please try the following in a new folder: 1. Run the following commands

npm init
npm install @babel/register
npm install @babel/core@^7.2.2
npm install @babel/preset-env

Create a .babelrc file with the following

{
"presets": ["@babel/preset-env"],
"plugins": []
}

Create a sample emp.jsx with the following

import React from "react";
class CommentBox extends React.Component {}

Create a parse.js file with the following

require('babel-register')({presets: ['env', 'react']});
let Emp = require('./emp.jsx');

Now run the parse.js file by running

node parse.js

You should see the error mentioned above. I have been trying to fix with for a long time now. Please help.

Many Thanks

Thanks @WilliamChong. Tried that, but no luck. I still get the same error. When do you suggest I install @babel/register? I installed it after installing @babel/core@^7.2.2 — Arun, Jan 12 '19 at 07:25

Naor Tedgi · Answer 1 · 2019-01-12T09:29:48.020

1

followed your instructions and using @babel/register instead with this package.json run with no issues

tasted on
node : v8.11.2
yarn : 1.12.3

paese.json

require('@babel/register')({});
let Emp = require('./emp.jsx');
console.log(Emp)

packge.json

{
  "name": "sof",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "@babel/core": "^7.2.2",
    "@babel/preset-env": "^7.2.3",
    "@babel/register": "^7.0.0"
  },
  "dependencies": {
    "react": "^16.7.0"
  }
}

edited Jan 12 '19 at 09:29

answered Jan 12 '19 at 09:23

Naor Tedgi

5,204
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1

Thanks @Naor, doesn't work for me. This is the batch file I'm running call npm init call npm install @babel/register call npm install @babel/core@^7.2.2 call npm install @babel/preset-env node parse.js Get the same error. Also have made a small edit to the parse.js file above. Please have a look. – Arun Jan 12 '19 at 10:59

score 0 · Accepted Answer · answered Jan 14 '19 at 04:04

0

Found the problem. The .babelrc file that contained a reference to @babel/preset-env. Removed it and the js file compiled just fine.

answered Jan 14 '19 at 04:04

Arun

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Unable to run a node.js file with @babel/preset-env

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