typescript-language skillA
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typescript-language is agent-read markdown (skill) from hoangnguyen0403/agent-skills-standard: Apply modern TypeScript standards for type safety and maintainability. Use when working with types, interfaces, generics, enums, unions, or tsconfig settings..
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What the file says
# TypeScript Language Patterns
## **Priority: P0 (CRITICAL)**
## Implementation Guidelines
- **Type Annotations**: Explicit params/returns. Infer locals.
- **Interfaces vs Types**: interface for APIs (supports declaration merging). type for unions, intersection types, mapped/conditional types.
- **Strict Mode**: strict: true. Null Safety: ?. and ?? — Use narrowing instead. Avoid non-null assertion (!) operator.
- **Enums**: Literal unions or `as const`. **No runtime `enum`**.
- **Generics**: Reusable, type-safe code.
- **Type Guards**: `typeof`, `instanceof`, predicates.
- **Utility Types**: `Partial`, `Pick`, `Omit`, `Record`.
- **Immutability**: `readonly` arrays/objects. Const Assertions: `as const`, `satisfies`.
- **Template Literals**: `on${Capitalize<string>}`.
- **Discriminated Unions**: Literal kind property to narrow type safely. Switch on discriminant.
- **Advanced**: Mapped, Conditional, Indexed types.
- **Access**: Default `public`. Use `private`/`protected` or `#private`.
- **Branded Types**: `string & { __brand: 'Id' }`.
## Anti-Patterns
- **NEVER use `any`**: Use `unknown` or specific interface instead.
- **No `Function`**: Use signature `() => void`.
…Read the whole file at its exact version.
How to install
mdr add hoangnguyen0403/agent-skills-standard/typescript-language@git:20260821.b9b1ba0mdr add hoangnguyen0403/agent-skills-standard/typescript-language@sha256:5dbacb158389d8c8Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_zcqnpwwwomxtk7si)
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- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2881 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
hoangnguyen0403/agent-skills-standard · 571 stars · license MIT · pushed 2026-09-24 · branch develop
API
GET https://markdownregistry.com/api/v1/artifacts/art_zcqnpwwwomxtk7si GET https://markdownregistry.com/api/v1/resolve?ref=hoangnguyen0403/agent-skills-standard/typescript-language GET https://markdownregistry.com/api/v1/blob/5dbacb158389d8c88a1239324c10cf84cbb688f7ca88f3920671d25d71f91866
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