TestsNodejs - compilers deprecation in mocha and babel

I'm building api rest on node with integration test (Babel, chai, mocha)

I changed

 --compilers js:babel-core/register

for

--require babel-core/register

as recommended by the documentation: https://github.com/mochajs/mocha/wiki/compilers-deprecation

But when I make this change in my mocha.opts file, the error appears:

C:\Users\Ranulfo\Desktop\noderest>npm run test-integration

> [email protected] test-integration C:\Users\Ranulfo\Desktop\noderest
> mocha --opts test/integration/mocha.opts test/integration/*.js

C:\Users\Ranulfo\Desktop\noderest\test\integration\helpers.js:1
(function (exports, require, module, __filename, __dirname) { import supertest f
rom 'supertest';
                                                              ^^^^^^

SyntaxError: Unexpected token import

For more details of the code:

mocha.opts(test/integration/mocha):

--require test/integration/helpers.js
--reporter spec
--require babel-core/register
--slow 5000

helpers.js (test/integration/helpers.js)

import supertest from 'supertest';
import chai from 'chai';
import app from '../../app';

global.app = app;
global.request = supertest(app);
global.expect = chai.expect;

package.json

{
  "name": "noderest",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "babel-node ./index.js",
    "test": "echo \"Error: no test specified\" && exit 1",
     "test-integration": "mocha --opts test/integration/mocha.opts test/integration/*.js"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "babel-cli": "^6.26.0",
    "babel-core": "^6.26.3",
    "babel-preset-env": "^1.7.0",
    "babel-preset-es2015": "^6.24.1",
    "babel-preset-node6": "^11.0.0",
    "babel-preset-stage-2": "^6.24.1",
    "babel-register": "^6.26.0",
    "chai": "^4.1.2",
    "mocha": "^5.2.0",
    "supertest": "^3.1.0"
  },
  "dependencies": {
    "express": "^4.16.3",
    "sequelize": "^4.37.10",
    "sqlite3": "^4.0.0"
  }
}

.babelrc

{
  "presets": ["env"]
}

Solution

With the update of "Babel" for version 7, the addition of some configuration steps has occurred.

To adjust the "bug" do the following steps:

Install the specified dependency: npm install --save-dev @ babel / register Change the "mocha.opts" file to the compilers for the following line: --compilers js: @ babel / register Once this is done, your workflow should be normalized. (I.e.

Note: Look out for the following dependencies that are not present in the tutorial.

npm install --save-dev @babel/cli
npm install --save-dev @babel/core
npm install --save-dev @babel/node
npm install --save-dev @babel/preset-env
npm install --save-dev @babel/register

Auxiliary content:

Setup: https://babeljs.io/setup#installation

Migration: https://babeljs.io/docs/en/v7-migration

Mocha issues - Compilers deprecation https://github.com/mochajs/mocha/wiki/compilers-deprecation