TypeScript files in repository root directory are not covered by ESLint

[ybnd]

Describe the bug

Apparently server.ts and startup-message.ts are not covered by ESLint.

To Reproduce

Steps to reproduce the behavior:

1. Remove some semicolons in the following files:
   • src/test.ts
   • server.ts
   • startup-message.ts
2. Execute npm run lint-fix and check the files again
   • src/test.ts will be fixed
   • server.ts and startup-message.ts won't be

Expected behavior

ESLint should apply to all TypeScript files unless explicitly turned off (e.g. for configuration files like cypress.config.ts)