| 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 codejust 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 cratejust 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 codejust 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 onlyjust 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:
- After editing a single file in a crate:
just check-crate <crate-name>ANDjust clippy-crate <crate-name> - After editing multiple crates:
just check-rsANDjust clippy - Before considering a task complete: all checks MUST pass AND all clippy warnings MUST be fixed
Example Workflow with Validation Loop
- Edit files in
metadata-dbcrate - Format:
just fmt-file <edited-files> - Check compilation:
just check-crate metadata-db- If errors → fix → return to step 2
- Check clippy:
just clippy-crate metadata-db- If warnings → fix ALL → return to step 2
- Fix ALL clippy warnings in files you modified
- Repeat until: zero compilation errors AND zero clippy warnings
- Once passing, optionally run full check:
just check-rsandjust clippy
Common Mistakes to Avoid
❌ Anti-patterns
- Never run
cargo checkdirectly - Usejust check-crateorjust check-rs - Never run
cargo clippydirectly - 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-cratefor 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 checkjust check-crate <crate>- Safe, read-only compilation checkjust clippy- Safe, read-only lintingjust clippy-crate <crate>- Safe, read-only linting
Next Steps
After all checks pass:
- Run tests → See
.claude/skills/code-test/SKILL.md - Generate schemas if needed → See
.claude/skills/code-gen/SKILL.md - Commit changes → Ensure all checks green first