typescript SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
typescript from gaia-harness/gaia is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add gaia-harness/gaia/typescript@git:20261102.65f04fePins git:20261102.65f04fe in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- gaia-harness/gaia
- Path
apps/web/.claude/skills/typescript/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261102.65f04fe, committed Nov 2, 2026
- Size
- 4,427 bytes
- Repository stars
- 26
- License
- MIT
Applies GAIA's patterns and conventions for all TypeScript code. Use this skill whenever writing or reviewing TypeScript, typing exports, choosing between type and interface, using Zod schemas, defining a constant list, union type, or lookup map that other code shares, structuring function parameters, or enforcing code patterns like avoiding switch statements and enums.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# TypeScript
## Types
- `import type {}` for type-only imports: `import type {ReactNode} from 'react'`
## Naming, camelCase
All identifiers use camelCase: Zod fields, form `name`/`id`/`htmlFor`, props, state, params.
**Exceptions (snake_case OK):**
- `types/database.ts`, mirrors DB column names
- Dynamic template literal names where variable part is already lowercase
- Environment variable names (`SUPABASE_URL`)
Map snake_case ↔ camelCase at API call boundaries, not in schemas or UI code.
## Naming, Descriptive and Self-Documenting
Owned by the naming-conventions skill (`.claude/skills/naming-conventions/SKILL.md`).
## Exported Functions, Explicit Return Types
All exported functions must have explicit return types.
**Exceptions:**
- Route loaders/actions (complex generics)
- React components (props typed inline on the destructured parameter, return type inferred)
```tsx
// BAD
export const formatDate = (date: Date) => format(date, 'yyyy-MM-dd');
// GOOD
export const formatDate = (date: Date): string => format(date, 'yyyy-MM-dd');
```
## General Rules
- Use `type` not `interface`
- Arrays: `string[]` not `Array<string>`
…Read the whole file at its exact version.
How to install
mdr add gaia-harness/gaia/typescript@sha256:970c1e8bc9e8e597The line at the top of this page pins the label git:20261102.65f04fe, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_tmt5qgbru2a3htd2)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Nov 2, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4427 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
gaia-harness/gaia · 26 stars · license MIT · pushed 2026-11-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_tmt5qgbru2a3htd2 GET https://markdownregistry.com/api/v1/resolve?ref=gaia-harness/gaia/typescript GET https://markdownregistry.com/api/v1/blob/970c1e8bc9e8e597ab7475b48cc5179be56fc35ae6e642290a40dd58cb2c9c3f
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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