Linting (Add/Extend + Enforce)

When to use

Use when:

• Repo has no lint/format tooling
• Tooling exists but isn’t enforced (no CI / no Make targets)
• New stack introduced (new language/runtime)
• QA Gatekeeper finds lint drift or regressions

Lint is required and blocking.

Inputs

• Detected stack(s) and frameworks
• Existing config files (if any)
• Existing CI and Make targets

Outputs

• Lint/format tool configured for the stack
• make lint exists and passes
• CI runs lint (and fails on violations)
• Repo conventions documented (briefly) in /docs/testing/how-to-run.md (or equivalent)

Rules

• Prefer existing repo conventions if present.
• If none exist, use stack-default skills for the detected platform.
• Do not introduce multiple linters unless there is a clear need.
• Avoid noisy rules that cause churn; prioritize correctness and consistency.

Step 1 — Detect current lint/format state

Look for:

• JS/TS: ESLint, Prettier, Biome
• .NET: dotnet format, analyzers, EditorConfig
• Python: ruff, black, isort
• Flutter/Dart: dart format, dart analyze, flutter analyze
• MAUI: .NET analyzers + formatting + EditorConfig

Record:

• Tool(s)
• Config file location
• How it’s invoked today

Step 2 — Choose the canonical commands

Prefer Make targets:

• make lint (required)
• Optionally: make format (if repo supports auto-fix) If Makefile missing: create a task to add it (blocking if repo needs to run locally).

Step 3 — Add/extend configuration (by stack)

JS/TS (web)

• Ensure a single “lint” entrypoint exists
• Configure formatting either via Prettier/Biome
• Ensure lint fails on errors (and warnings if repo policy requires)

.NET (API/MAUI)

• Ensure .editorconfig exists
• Use dotnet format (or analyzers) as the canonical lint/format step
• Enforce analyzers at build (as appropriate)

Python

• Prefer ruff as a unified linter/formatter where feasible
• Ensure python -m ... commands are stable across environments

Flutter

• Use dart format + dart analyze (or flutter analyze) as canonical steps

Step 4 — Wire into CI

• Add lint to CI workflow(s)
• Ensure CI uses the same command as local Make targets (make lint)

Step 5 — Validate and minimize churn

• Run lint locally
• Apply autofix only if repo policy supports it
• Avoid massive formatting-only diffs unless specifically requested or necessary

Step 6 — Update docs + skills (skill drift is blocking)

• Update /docs/testing/how-to-run.md to include lint commands (Make targets).
• If you changed conventions used in any skill docs, update those skills in the same change set.

Suggested required_gates[]

• Always include: lint, ci
• Usually includes: build (to ensure analyzers/build rules are compatible)