> [email protected] test
> vitest run --coverage


 RUN  v3.1.2 F:/Projects/vitest-test
      Coverage enabled with istanbul

 ✓ foo.spec.ts (1 test) 3ms
   ✓ test 1ms

⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ Unhandled Error ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯SyntaxError: F:\Projects\vitest-test\foo.ts: Support for the experimental syntax 'decorators' isn't currently enabled (4:3):

  2 |
  3 | export class Foo {
> 4 |   @MyDecorator()
    |   ^
  5 |   bar?: string;
  6 | }
  7 |

Add @babel/plugin-proposal-decorators (https://github.com/babel/babel/tree/main/packages/babel-plugin-proposal-decorators) to the 'plugins' section of your Babel config to enable transformation.   
If you want to leave it as-is, add @babel/plugin-syntax-decorators (https://github.com/babel/babel/tree/main/packages/babel-plugin-syntax-decorators) to the 'plugins' section to enable parsing.    

If you already added the plugin for this syntax to your config, it's possible that your config isn't being loaded.
You can re-run Babel with the BABEL_SHOW_CONFIG_FOR environment variable to show the loaded configuration:
        npx cross-env BABEL_SHOW_CONFIG_FOR=F:\Projects\vitest-test\foo.ts <your build command>
See https://babeljs.io/docs/configuration#print-effective-configs for more info.

2  |  
3  |  export class Foo {
4  |    @MyDecorator()
   |       ^
5  |    bar?: string;
6  |  }




 Test Files 1 passed (1)
      Tests 1 passed (1)
   Start at 20:54:42
   Duration 840ms