Changes to types.ts not triggering type/eslint checks

[runofthemillgeek]

Current behavior

If I have a types only file (say types.ts), changes to this file doesn't cause the plugin to perform type checks or run eslint checks when used in combination with babel-loader.

Expected behavior

Changes to a file that only has types should cause the plugin to do type/eslint checks again so that correct information is reported.

Steps to reproduce the issue

Use the babel-loader example project and add a types.ts file with the following contents:

export type Animal = {
  type: 'Dog' | 'Cat';
  speak: () => string;
};

Change index.ts to:

import { Animal } from './types';

const dog: Animal = {
  speak: () => 'Bark!',
  type: 'Dog',
};

console.log(dog);

Make some change to types.ts and see that nothing happens during yarn dev. Same goes for eslint if it was enabled.

Issue reproduction repository

Environment

{
    "@babel/core": "^7.10.3",
    "@babel/preset-env": "^7.10.3",
    "@babel/preset-typescript": "^7.10.1",
    "babel-loader": "^8.1.0",
    "fork-ts-checker-webpack-plugin": "^5.0.5",
    "typescript": "^3.9.5",
    "webpack": "^4.43.0",
    "webpack-cli": "^3.3.12",
    "webpack-dev-server": "^3.11.0"
}

os: WSL Ubuntu 18.04.4 LTS

[johnnyreilly]

Closing as a duplicate of #36 (which I've just reopened)

@piotr-oles had hoped this issue would be resolved by v5 - but it looks like it hasn't been.