Add more linting rules and typecheck to the CI

[ch-iv]

Fixes #40

TLDR

Added stricter linting rules, TypeScript typecheck, pre-commit hooks, and a GitHub action to ensure code quality.

What changed?

1. GitHub Actions Workflow (.github/workflows/ci.yml)

• New CI pipeline that runs on push to main and pull requests
  • Tests (vitest)
  • Format checking (prettier)
  • Linting (eslint)
  • Type checking (tsc)

2. Pre-commit Hook (.husky/pre-commit)

• Added new pre-commit configuration
• Runs lint-staged for staged file checks
• Runs typecheck after lint-staged

4. ESLint Rules (eslint.config.mjs)

• Added padding lines between function statements (error)
• Added requirement for explicit function return types in TypeScript (error)

5. TypeScript Configuration (tsconfig.json)

• Stricter compilation options enabled

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Project	Deployment	Preview	Comments	Updated (UTC)
trcc	Ready	Preview	Comment	Nov 22, 2025 8:32pm

[Copilot]

Pull request overview

This PR enhances code quality by adding stricter TypeScript configuration, additional ESLint rules, and automated checks in CI. The changes enforce explicit return types, enable comprehensive TypeScript strict mode checks, and add pre-commit hooks using husky and lint-staged.

Key changes:

• Enabled TypeScript strict mode with additional safety checks (noUncheckedIndexedAccess, noUnusedLocals, etc.)
• Added ESLint rules for explicit function return types and padding between functions
• Introduced husky and lint-staged for pre-commit quality checks
• Added GitHub Actions CI workflow for automated testing, linting, formatting, and typechecking

Reviewed changes

Copilot reviewed 9 out of 12 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tsconfig.json	Enabled strict mode and additional TypeScript compiler safety checks, restricted includes to src/ and tests/ directories
src/lib/client/supabase/server.ts	Updated to use bracket notation for process.env access (required by noPropertyAccessFromIndexSignature)
src/lib/api/getExample.ts	Added explicit return type annotation and updated import path to use index export
src/app/page.tsx	Added explicit return type annotation for Home component
src/app/layout.tsx	Added explicit return type annotation for RootLayout component
package.json	Added husky and lint-staged dependencies, updated scripts for typecheck and combined check/fix commands
package-lock.json	Updated lock file with new dependencies and removed unused peer dependencies
eslint.config.mjs	Added rules for explicit function return types and padding between functions
.lintstagedrc.mts	New lint-staged configuration for pre-commit hooks
.husky/pre-commit	New pre-commit hook script
.gitignore	Added .claude directory exclusion
.github/workflows/ci.yml	New CI workflow for automated checks

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[Copilot]

Pull request overview

Copilot reviewed 9 out of 12 changed files in this pull request and generated 4 comments.

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