| name | hygiene |
| description | Use when making code changes to ensure they pass VS Code's hygiene checks. Covers the pre-commit hook, unicode restrictions, string quoting rules, copyright headers, indentation, formatting, ESLint, and stylelint. Run the hygiene check before declaring work complete. |
Hygiene Checks
VS Code runs a hygiene check as a git pre-commit hook. Commits will be rejected if hygiene fails.
Running the hygiene check
Always run the pre-commit hygiene check before declaring work complete. This catches issues that would block a commit.
To run the hygiene check on your staged files:
npm run precommit
This executes node --experimental-strip-types build/hygiene.ts, which scans only staged files (from git diff --cached).
To check specific files directly (without staging them first):
node --experimental-strip-types build/hygiene.ts path/to/file.ts
What it checks
The hygiene linter scans staged files for issues including (but not limited to):
- Unicode characters: Non-ASCII characters (em-dashes, curly quotes, emoji, etc.) are rejected. Use ASCII equivalents in comments and code. Suppress with
// allow-any-unicode-next-line or // allow-any-unicode-comment-file.
- Double-quoted strings: Only use
"double quotes" for externalized (localized) strings. Use 'single quotes' everywhere else.
- Copyright headers: All files must include the Microsoft copyright header.
- Indentation: Tabs only, no spaces for indentation.
- Formatting: TypeScript files must match the formatter output (run
Format Document to fix).
- ESLint: TypeScript files are linted with ESLint.
- Stylelint: CSS files are linted with stylelint.
