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Code Checking

@edgeandnode/amp
22
0

Check and lint Rust/TypeScript code using justfile tasks (just check-crate, just clippy-crate). Use after code changes, when user mentions compilation, type checking, linting, clippy warnings, or needs to validate code quality. Runs cargo check and clippy with proper flags.

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SKILL.md

name Code Checking
description Check and lint Rust/TypeScript code using justfile tasks (just check-crate, just clippy-crate). Use after code changes, when user mentions compilation, type checking, linting, clippy warnings, or needs to validate code quality. Runs cargo check and clippy with proper flags.

Code Checking Skill

This skill provides code validation and linting operations for the project codebase.

When to Use This Skill

Use this skill when you need to:

  • Validate Rust or TypeScript code after making changes
  • Run compiler checks without building
  • Lint code with clippy
  • Ensure code quality before commits or PRs

Available Commands

Check Rust Code

just check-rs [EXTRA_FLAGS]

Checks Rust code using cargo check --all-targets. This runs the compiler without producing binaries.

Alias: just check (same as check-rs)

Examples:

  • just check-rs - check all Rust code
  • just check-rs --release - check with release optimizations

Check Specific Crate

just check-crate <CRATE> [EXTRA_FLAGS]

Checks a specific crate with all its targets using cargo check --package <CRATE> --all-targets.

Examples:

  • just check-crate metadata-db - check the metadata-db crate
  • just check-crate common --release - check common crate with release mode

Lint Rust Code (Clippy)

just clippy [EXTRA_FLAGS]

Lints all Rust code using cargo clippy --all-targets. Clippy catches common mistakes and suggests improvements.

Examples:

  • just clippy - lint all code
  • just clippy -- -D warnings - treat warnings as errors

Lint Specific Crate

just clippy-crate <CRATE> [EXTRA_FLAGS]

Lints a specific crate using cargo clippy --package <CRATE> --all-targets --no-deps.

The --no-deps flag ensures clippy only analyzes the specified crate's code, not its dependencies. This provides:

  • Faster execution: Skip checking dependency code you don't control
  • Focused output: See only warnings from your crate, not transitive dependencies
  • Actionable results: All warnings shown are in code you can fix

Examples:

  • just clippy-crate admin-api - lint the admin-api crate only
  • just clippy-crate dataset-store -- -D warnings - lint with warnings as errors

Check All Code

just check-all

Checks both Rust and TypeScript code by running check-rs and check-ts sequentially.

Check TypeScript Code

just check-ts

Checks TypeScript code using pnpm check.

Important Guidelines

MANDATORY: Run Checks After Changes

You MUST run checks after making code changes:

  1. After editing a single file in a crate: just check-crate <crate-name> AND just clippy-crate <crate-name>
  2. After editing multiple crates: just check-rs AND just clippy
  3. Before considering a task complete: all checks MUST pass AND all clippy warnings MUST be fixed

Example Workflow with Validation Loop

  1. Edit files in metadata-db crate
  2. Format: just fmt-file <edited-files>
  3. Check compilation: just check-crate metadata-db
    • If errors → fix → return to step 2
  4. Check clippy: just clippy-crate metadata-db
    • If warnings → fix ALL → return to step 2
  5. Fix ALL clippy warnings in files you modified
  6. Repeat until: zero compilation errors AND zero clippy warnings
  7. Once passing, optionally run full check: just check-rs and just clippy

Common Mistakes to Avoid

❌ Anti-patterns

  • Never run cargo check directly - Use just check-crate or just check-rs
  • Never run cargo clippy directly - Justfile adds proper flags like --no-deps
  • Never ignore clippy warnings - Clippy is enforced in CI, warnings will fail builds
  • Never skip the check step - Even if "it should compile"
  • Never check multiple crates at once initially - Check the modified crate first

✅ Best Practices

  • Check single crate first (just check-crate <name>) - faster feedback
  • Fix compilation errors before running clippy
  • Run clippy after EVERY code change
  • Use just clippy-crate for focused results (--no-deps flag)
  • Document any warnings you absolutely cannot fix (rare exception)

Pre-approved Commands

These commands can run without user permission:

  • just check-rs - Safe, read-only compilation check
  • just check-crate <crate> - Safe, read-only compilation check
  • just clippy - Safe, read-only linting
  • just clippy-crate <crate> - Safe, read-only linting

Next Steps

After all checks pass:

  1. Run tests → See .claude/skills/code-test/SKILL.md
  2. Generate schemas if needed → See .claude/skills/code-gen/SKILL.md
  3. Commit changes → Ensure all checks green first