# Checking Changes

> 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.

- Skill: `tomevault-io/checking-changes` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add tomevault-io/checking-changes`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/checking-changes/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Web & Frontend
- Author: tomevault-io (https://skillmd.com/u/tomevault-io)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/tomevault-io/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 by default; use `E2E_CHECK=true make check` to also run changed e2e tests
- E2E snapshot mismatches can be ignored (they require manual updates)

---
> Converted and distributed by [TomeVault](https://tomevault.io/claim/streamlit) — claim your Tome and manage your conversions.
<!-- tomevault:4.0:skill_md:2026-04-11 -->