#188 Implement the linting and formatting FIXED

[solidsole]

Findings

1. No workspace-level pre-commit hook existed

   • The repository did not have a committed Git hook flow like Husky, Lefthook, or .githooks.

2. Linting/formatting was inconsistent across projects

   • ignition-api had ESLint and Prettier scripts.
   • packages/core-ts had ESLint only, and it was partly broken.
   • ignition-pay-frontend had a lint script but no committed ESLint config for this setup.
   • Dart/Flutter and Go had style expectations documented, but no shared pre-commit enforcement.

3. packages/core-ts linting had a real setup issue

   • @typescript-eslint/parser was missing.
   • Its precision-protection lint rule was also catching test canary files that intentionally use Number(...).

4. Frontend needed explicit lint/format support

   • To participate cleanly in a pre-commit workflow, ignition-pay-frontend needed:
     • ESLint config
     • Prettier dependency
     • helper scripts for lint fixing and formatting

5. There are unrelated existing issues in ignition-api

   • Build and lint failures exist there already.
   • These were not caused by the pre-commit implementation.

---

CLOSE #188

Fix features implemented

1. Committed Git hook

   • Added .githooks/pre-commit

2. Automatic hook installation

   • Added prepare script in root package.json
   • Added scripts/setup-git-hooks.mjs
   • This configures:

     git config core.hooksPath .githooks

3. Central staged-file pre-commit runner

   • Added scripts/pre-commit-checks.mjs
   • This script:
     • detects staged files
     • runs relevant checks only where needed
     • re-stages formatted files automatically

4. Shared formatting config

   • Added .prettierrc.json
   • Added .prettierignore

5. JavaScript/TypeScript staged checks

   • For ignition-api
   • For ignition-pay-frontend
   • For packages/core-ts

   These run:

   • Prettier
   • ESLint with --fix

6. Dart/Flutter staged checks

   • packages/core-dart
     • dart format
     • dart analyze
   • ignition-mobile
     • dart format
     • flutter analyze --no-pub

7. Go staged checks

   • packages/core-go
     • gofmt -w
     • go test ./...

8. Core TS lint fix

   • Added missing parser dependency
   • Added format scripts
   • Scoped the BigInt precision rule so tests are not blocked incorrectly

9. Frontend lint/format support

   • Added ignition-pay-frontend/eslint.config.mjs
   • Added:
     • lint:fix
     • format
     • format:check

10. API helper scripts

• Added to ignition-api/package.json:
  • lint:check
  • format:check

11. Contributor documentation updated

• Updated CONTRIBUTING.md to explain:
  • install flow
  • hook setup
  • pre-commit behavior

[drips-wave]

@solidsole Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

Learn more about application limits

[solidsole]

@Nanafancy PLEASE REVIEW AND PING ME BACK