Validates all code changes before committing by running format, lint, type, and unit test checks. Use after making backend (Python) or frontend (TypeScript) changes, before committing or finishing a work session.
View on GitHubFebruary 5, 2026
Select agents to install to:
npx add-skill https://github.com/streamlit/streamlit/blob/e6947d3d238723d7787825577752f3a566249a25/.claude/skills/checking-changes/SKILL.md -a claude-code --skill checking-changesInstallation paths:
.claude/skills/checking-changes/# Checking Changes **Run at the end of a work session** or after completing a set of changes — not after every small edit. ```bash make check ``` This runs formatting, linting, type checking, and unit tests on all uncommitted files (staged, unstaged, and untracked). ## Workflow 1. Run `make check` 2. If issues are found: - Fix the reported errors - Re-run `make check` - Repeat until all checks pass 3. Only consider work complete when `make check` succeeds ## Notes - E2E tests are not included; use `make run-e2e-test e2e_playwright/<test>_test.py` separately if needed