standards-typescript
Skill1 starsChanged 4 months agoMITView on GitHub
TypeScript coding standards — strict mode, no any or as assertions, readonly and as const immutability, discriminated unions, zod validation at boundaries, Vitest/Jest with 80% coverage, Prettier and ESLint. Use when writing, reviewing, or testing TypeScript or TSX code.
1 other project uses a version of this.
Adopted by
Most recently taken up by
- pecigonzalo/agent-skillstheir own version, first seen Jul 16, 2026
Other versions1 project uses a version of this.
Word for word · 0
None found.
Edited · 0
None found.
Wrote their own version · 1
- pecigonzalo/agent-skills★ 0same name
How matches are found. Word for word: the exact same text. Edited: shares passages with this file (“99% same” means 99% of its five-word phrases also appear here; 10% or more counts). Their own version: similar meaning, or, weakest, the same name. We can’t tell which project had it first. Projects are counted among the 200 most-starred candidates, and mentions are links to the repository we found, up to 50 per site, so both counts are a floor.
In this repository14 other files it gives its agents.
- .claude/rules/common/agents.mdAGENTS.md
- docs/agents.mdAGENTS.md
- CLAUDE.mdCLAUDE.md
- standards-<layer>Skill
- add-agentSkill
- add-standards-layerSkill
- audit-configSkill
- plan-featureSkill
- research-reuseSkill
- review-changesSkill
- shipSkill
- standards-fastapiSkill
- standards-pythonSkill
- tddSkill
The file
We split this skill into the rules it gives an agent
1 rule. About 0 are common, 0 are distinctive, and 1 is very specific to this project.
≈0
Common · estimate
Many files like this have a rule of this kind.
≈0
Distinctive · estimate
This author's own choices. Worth a look.
1
Very specific
Tied to their project's names, files or tools. Probably skip.
- Common
- Distinctive
- Very specific
- Very specific: line 15
No
any: Prefer unknown and narrow.
≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Files
TypeScript Standards
The TypeScript delta over the always-loaded rules in .claude/rules/common/. The camelCase /
PascalCase / UPPER_SNAKE_CASE conventions and the immutability principle already live in
common/ — this layer adds the TypeScript mechanisms and compiler settings only.
What applies immediately
strict: trueintsconfig.json. Non-negotiable.- No
any. Preferunknownand narrow. Do not silence the checker withasassertions or// @ts-ignore— fix the type. - A type is not a runtime guarantee. Validate and narrow external input (request bodies, query params, env vars, third-party responses) with a runtime schema such as zod, and derive the static type from the schema so the two cannot drift.
- Never
eval,new Function, or string arguments tosetTimeout/setInterval. readonlyon what you expose;as constfor literal and config objects.
Reference files
| File | Covers |
| coding-style.md | Type safety, immutability mechanisms, types vs interfaces, tooling |
| patterns.md | Structural interfaces, DTO types, Result discriminated unions, zod at boundaries |
| security.md | Type-safe boundaries, dangerous APIs, prototype pollution, npm audit |
| testing.md | Vitest/Jest, coverage command, compile-time type tests |
| hooks.md | PostToolUse Prettier/ESLint/tsc hooks, console.log warnings |
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