Front-End Checklist CLI

frontendchecklist checks frontend code against the Front-End Checklist rules. It works offline, prints JSON when its output is piped (which is how you will usually call it), and uses exit codes you can branch on.

Run it with npx -y @frontendchecklist/cli <command> if frontendchecklist is not installed.

When to use it

• After writing or editing frontend files: frontendchecklist review <paths>.
• Before committing: git diff --cached | frontendchecklist review -.
• When the user asks to audit a deployed page: frontendchecklist audit https://....
• When you need the authoritative guidance for a topic: frontendchecklist search <topic>, then frontendchecklist rule <slug>.
• For a structured pass (launch, accessibility, SEO, performance): frontendchecklist checklists, then frontendchecklist checklist <slug>.

Commands

Useful flags: --focus accessibility,seo, --min-priority high, --fail-on high.

Reading results

• review and audit return { findings: [{ target, rule, title, priority, issue, fix? }], failing }.
• Exit code 0: fine. 1: findings at or above --fail-on. 2: bad input or runtime error, with { "error": "..." } on stdout.
• Findings are conservative static heuristics. "No findings" means nothing provable was found, not that the code is clean: follow up with search/rule for areas the heuristics cannot see (rendered contrast, focus order, real performance).

Workflow

1. frontendchecklist review <changed files> --min-priority medium
2. For each finding, run frontendchecklist rule <rule> and apply its fix guidance.
3. Re-run the review until no critical/high findings remain (--fail-on high exits 0).
4. Mention any remaining medium/low findings to the user instead of silently ignoring them.