/precommit

Task

Run pre-commit checks: lint:fix -> build -> test:unit

Step 1: Check for runner script

First, check if scripts/precommit-runner.js exists in the project root. If the file exists, run it:

node scripts/precommit-runner.js --mode full --tail 80

If it succeeds, use its output and skip to the Output section.

Step 2: Fallback (no runner script)

If scripts/precommit-runner.js does not exist, skip Step 1 entirely and detect the project ecosystem to run steps manually.

Ecosystem detection (check project root for manifest files):

Manifest	Ecosystem	Lint-fix	Build	Test
package.json	Node.js	{pm} lint:fix	{pm} build	{pm} test:unit or {pm} test
pyproject.toml	Python	ruff check --fix .	—	pytest tests/unit/
Cargo.toml	Rust	cargo clippy --fix	cargo build	cargo test
go.mod	Go	golangci-lint run --fix	go build ./...	go test ./...
build.gradle	Java	./gradlew spotlessApply	./gradlew build	./gradlew test

For Node.js projects, auto-detect package manager from lockfile (pnpm-lock.yaml → pnpm, yarn.lock → yarn, else npm).

Read package.json (or equivalent manifest) to check which scripts exist, then run available steps in order:

Step	package.json script	If missing
lint:fix	lint:fix	Skip with note (not all projects have it)
build	build	Skip with note
test:unit	test:unit, fallback to test	Skip with note

Run each available step sequentially. Report all results even if a step fails.

After lint:fix completes, run git diff --name-only to capture auto-fixed files.

Graceful Skip Rules

Scenario	Behavior
No lint:fix script	Skip, log "no lint:fix script — skipped"
No build script	Skip, log "no build script — skipped"
No test:unit or test script	Skip, log "no test script — skipped"
No package.json	Report error, cannot run checks

Output

## Precommit (full)

## Results

| Step      | Status | Notes |
| --------- | ------ | ----- |
| lint:fix  | ✅/❌/⏭️ | skipped if no script |
| build     | ✅/❌/⏭️ | skipped if no script |
| test:unit | ✅/❌/⏭️ | skipped if no script |

## Changed Files (after lint:fix)

- <files or "(none)">

## Overall: ✅ PASS / ❌ FAIL

## Checklist

- [ ] All available checks pass
- [ ] git status reviewed