lint-and-validate

# Lint and Validate Skill > **MANDATORY:** Run appropriate validation tools after EVERY code change. Do not finish a task until the code is error-free. ### Procedures by Ecosystem #### Node.js / TypeScript 1. **Lint/Fix:** `npm run lint` or `npx eslint "path" --fix` 2. **Types:** `npx tsc --noEmit` 3. **Security:** `npm audit --audit-level=high` #### Python 1. **Linter (Ruff):** `ruff check "path" --fix` (Fast & Modern) 2. **Security (Bandit):** `bandit -r "path" -ll` 3. **Types (MyPy):** `mypy "path"` ## The Quality Loop 1. **Write/Edit Code** 2. **Run Audit:** `npm run lint && npx tsc --noEmit` 3. **Analyze Report:** Check the "FINAL AUDIT REPORT" section. 4. **Fix & Repeat:** Submitting code with "FINAL AUDIT" failures is NOT allowed. ## Error Handling - If `lint` fails: Fix the style or syntax issues immediately. - If `tsc` fails: Correct type mismatches before proceeding. - If no tool is configured: Check the project root for `.eslintrc`, `tsconfig.json`, `pyproject.toml` and suggest creating one. --- **Strict Rule:** No code should be committed or reported as "done" without passing these checks. --- ## Scripts | Script | Purpose | Command | |--------|---------|---------| | `scripts/lint_runner.py` | Unified lint check | `python scripts/lint_runner.py <project_path>` | | `scripts/type_coverage.py` | Type coverage analysis | `python scripts/type_coverage.py <project_path>` | --- > Converted and distributed by [TomeVault](https://tomevault.io) | [Claim this content](https://tomevault.io/claim/davila7/claude-code-templates) <!-- tomevault:2.0:skill_md:2026-04-05 -->