How can I check if an import statement is working correctly in the Node 6 REPL?

Question

export default config = {
  apiUrl : "http://localhost:7543"
}

$ node --version
v6.7.0

Is this possible without transpiling? Is there a way to polyfill in import without having to change my code?

I'd like to pull that in to the console (REPL) and see if the object is set up right. But:

import {config} from './config';
^^^^^^
SyntaxError: Unexpected token import

It looks like I can't use import in the REPL yet. So what's the alternative? Do I need to use ES5/Node require? Is there a polyfill that I can add in to my loader for Nesh?

Ideally I'd like to just open up node console and use paste in a line that uses import without having to change my code.

Possible duplicate of [Use Import command in Node.js](http://stackoverflow.com/questions/37753364/use-import-command-in-node-js) — Michał Perłakowski, Oct 09 '16 at 19:08
Node.js doesn't support ES 6 modules, you have to use Babel. — Michał Perłakowski, Oct 09 '16 at 19:10
Possible duplicate of [unexpected reserved word import in node.js](http://stackoverflow.com/questions/32346886/unexpected-reserved-word-import-in-node-js) — Amit, Oct 09 '16 at 19:11

score 1 · Accepted Answer · answered Oct 09 '16 at 19:26

1

Node.js doesn't support ES Modules. If you want to use them, you have to transpile your code using Babel.

It's not possible to polyfill ES Modules, because they introduce a new syntax, so the code can't even be parsed properly (you get syntax error).

answered Oct 09 '16 at 19:26

Michał Perłakowski

88,409
26
156
177

This seems like an argument against adopting ES2015 in Node. If I can't copy/paste my code into a REPL that's a downside to me. – jcollum Oct 09 '16 at 19:45
1

@jcollum You can use [`babel-node`](https://babeljs.io/docs/usage/cli/#babel-node). – Michał Perłakowski Oct 09 '16 at 19:47
No: `SyntaxError: repl: Modules aren't supported in the REPL` – jcollum Oct 09 '16 at 21:10

How can I check if an import statement is working correctly in the Node 6 REPL?

1 Answers1