False positives with no-empty-files

[andreavaccari]

The rule no-empty-files triggers false positives for .d.ts modules that contain only triple-slash directives.

This is used, for example, by vite in lieu of compilerOptions.types in jsconfig.json or tsconfig.json (ref)

Example:

/// <reference types="svelte" />
/// <reference types="vite/client" />

[fisker]

/cc @manovotny

[manovotny]

Awesome catch! I'll check it out.

[manovotny]

@fisker PR submitted (#1605). Let me know what you think!