TypeError: Class constructor Generator cannot be invoked without 'new'

[illepic]

With this simple test:

it('generates a project', () => {
  return helpers
    .run(join(__dirname, '../generators/app'))
    .withPrompts({
      chooseApp: 'app-node-pl',
      patternType: '02-molecules',
      name: 'New Component Test',
    })
    .then(() => {
      console.log('Generator ran');
    });
});

Getting the following error:

TypeError: Class constructor Generator cannot be invoked without 'new'

With this stack:

      at new _class (new-component/generators/app/index.js:30:5)
      at Environment.instantiate (new-component/node_modules/yeoman-environment/lib/environment.js:470:12)
      at Environment.create (new-component/node_modules/yeoman-environment/lib/environment.js:448:17)
      at RunContext.Object.<anonymous>.RunContext._run (new-component/node_modules/yeoman-test/lib/run-context.js:91:29)
      at RunContext.<anonymous> (new-component/node_modules/yeoman-test/lib/run-context.js:59:10)
      at new-component/node_modules/lodash/lodash.js:5118:35
      at new-component/node_modules/yeoman-test/lib/index.js:93:5
      at next (new-component/node_modules/rimraf/rimraf.js:83:7)
      at CB (new-component/node_modules/rimraf/rimraf.js:119:9)
      at new-component/node_modules/rimraf/rimraf.js:145:14

With these deps:

  "dependencies": {
    "gulp-rename": "<=1.2.2",
    "lodash": "^4.17.15",
    "yeoman-generator": "^4.1.0",
    "yeoman-test": "^2.0.0"
  }

Is yeoman-test@^2.0.0 compatible with yeoman-generator@^4.1.0?

[SBoudrias]

Are you using Babel? This seems like an issue caused by compilation.

[UlisesGascon]

I agree with @SBoudrias. This seems like a compilation issue