CODEWITHSUNDEEP
javascriptmocha.jschai
Marc Rasmussen
Marc Rasmussen

Reputation: 20545

Chai Unexpected token when importing

So i have this very very simple dummy test:

import {expect}  from 'chai';

describe('calculate', function () {
    it('add', function () {
        let result = 2 + 5;
        expect(result).equal(7);
    });
});

Here i get the following error when i run it:

(function (exports, require, module, __filename, __dirname) { import { expect } from 'chai';
                                                                     ^

SyntaxError: Unexpected token {

Can anyone tell me whats going on?

Upvotes: 0

Views: 1172

Answers (2)

Tmh
Tmh

Reputation: 1511

I faced the same issue after upgrading it to v5 because of es6 syntax in the library.

After downgrading it to "chai": "^4.2.0" it worked fine.

Upvotes: 1

adz5A
adz5A

Reputation: 2032

You need to transpile your code to use commonjs imports. You can use babel for such a task, see the docs https://babeljs.io/docs/en/babel-plugin-transform-modules-commonjs.

Via cli you can run babel --plugins @babel/plugin-transform-modules-commonjs script.js and then simply run your script.

If you don't want to use either transpilation (using babel or whatever) or commonjs you could use a loader such as esm: https://www.npmjs.com/package/esm.

From the docs, after running yarn add esm you can just node -r esm main.js.

Upvotes: 2

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