Preflight

Preflight Check

Run all local quality gates for the affected library. If no argument provided, detect the library from changed files via git diff --name-only.

Steps

1. Identify scope

# If $ARGUMENTS provided, use it. Otherwise detect from changed files:
git diff --name-only HEAD~1

Map changed file paths to library names (libs/core/ → core, libs/platform/ → platform, etc.).

2. Format

yarn format

Ensure all code is formatted before running quality gates.

3. Build

nx run <library>:build

Report: PASS or FAIL with error summary.

4. Lint

nx run <library>:lint

Report: PASS or FAIL with violation count and top issues.

5. Unit tests

nx run <library>:test --skip-nx-cache

Report: PASS or FAIL with failing test names and error messages.

6. Export check

For each changed component file, verify it is exported from the library's public_api.ts or index.ts. Flag any new public classes missing from exports.

7. Breaking change check

Run git diff on changed files. Flag:

• Removed input(), output(), or model() declarations
• Renamed exported classes, functions, or types
• Changed input/output names
• Changed default values

If breaking changes found, verify the commit message contains BREAKING CHANGE: footer.

Output

## Preflight Report

| Gate              | Status | Details          |
|-------------------|--------|------------------|
| Format            | PASS   |                  |
| Build             | PASS   |                  |
| Lint              | FAIL   | 3 violations     |
| Unit Tests        | PASS   | 42 tests passed  |
| Exports           | PASS   |                  |
| Breaking Changes  | WARN   | 1 input removed  |

### Failures
[details for each failed gate]

### Action Required
[what needs fixing before PR]