How to resolve Unexpected token, expected during import module in nodejs

Question

I don't see where is my error in this code, can you help me? import app from "../app"; ^^^^^^

I had add this "type": "module" in my package.json but my server stop to run.

const request = require("supertest");
import app from "../app";



describe("Test the root path", () => {
  test("It should response the GET method", () => {
    return request(app).get('/').then((res) => {
        expect(res.statusCode).toBe(200);
      });
  });
});

I think you can't use require with "type": "module", Node returns the following error: ReferenceError: require is not defined in ES module scope, you can use import instead, also you are missing the .js extension — Alphka
– Alphka, Commented Jan 5, 2023 at 21:59

ShueiYang · Accepted Answer · 2023-01-17 00:43:01Z

2

you can't use ES6 module with "type": module setting together with CommonJs which use require, so pick one you prefer :

CommonJs :

const request = require("supertest");
const app = require("../app.js");

ES module:

import request from 'supertest'; // supertest should now support ES6.
import app from "../app.js";

edited Jan 17, 2023 at 0:43

answered Jan 5, 2023 at 22:33

ShueiYang

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