In jest.config.json:


```json
{
    ...

    "moduleNameMapper": {
        "@ts(.*)$": "<rootDir>/resources/ts/$1"
    }
}
```

In tsconfig.json:

```json
{
    "compilerOptions": {
        ...

        "baseUrl": ".",
        "paths": {
            "@ts/*": ["resources/ts/*"]
        }
   }

   ...
}
```


in webpack.mix.js:

```javascript
const mix = require('laravel-mix');

...

mix.webpackConfig({
    resolve: {
        alias: {
            "@ts": path.resolve(
                __dirname,
                "resources/ts"
            )
        }
    }
});
```