## Summary
Replaces the Python `propscheck.py` validation script with TypeScript
code that:
- Uses a testable validator module (`lib/properties-validator.ts`)
- Has comprehensive unit tests (71 tests in
`test/properties-validation-tests.ts`)
- Integrates with the existing property loading infrastructure
- Runs as part of the normal test suite
## Changes
- **New validator module** (`lib/properties-validator.ts`):
- Raw file validation: duplicate keys, empty list elements, typos,
suspicious paths
- Orphan detection: compilers, groups, formatters, tools, libraries
- Cross-file duplicate compiler ID detection
- Disabled allowlist support (`# Disabled: id1 id2`)
- Invalid property format detection (leverages `parseProperties()` with
new `collectErrors` option)
- Missing compilers list detection for language files
- **Property library enhancement** (`lib/properties.ts`):
- Added `collectErrors` option to `parseProperties()` for structured
error collection
- **New npm script**: `npm run test:props` for quick property validation
- Set `CHECK_LOCAL_PROPS=true` to include `.local.properties` files
- **Updated references**:
- CI workflow no longer calls propscheck.py
- Pre-commit hook uses `npm run test:props`
- CE Properties Wizard uses the new validation
- **Removed**: `etc/scripts/util/propscheck.py` and `propschecktest.py`
## Test plan
- [x] All 71 unit tests pass
- [x] Integration tests validate real config files
- [x] `npm run test:props` works standalone
- [x] CE Properties Wizard validation works
- [x] CI passes
🤖 Generated with [Claude Code](https://claude.ai/code)
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Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
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