name	typescript
description	TypeScript guidelines. Use when editing or reviewing `*/.ts` and `*/.tsx` files.
license	MIT
user-invocable	false
metadata	{"author":"quisi.do"}

TypeScript guidelines

Follow functional programming principles where possible.
Prefer immutable data (const, readonly).
Support exactOptionalPropertyTypes by explicitly including | undefined in optional property definitions, e.g. readonly foo?: string | undefined.
Use interfaces for data structures and type definitions.
When a function only takes one parameter and that parameter is an untyped object, name that parameter's interface Options.
```
interface Options { /* ... */ }
export default function myFn({ /* ... */ }: Options): void {}
```

Do not prefix interfaces with I (e.g., use User instead of IUser) unless the name is already taken. For example, if a React component is already named User, then fallback to IUser for the interface.

name	typescript
description	TypeScript guidelines. Use when editing or reviewing `*/.ts` and `*/.tsx` files.
license	MIT
user-invocable	false
metadata	{"author":"quisi.do"}

Follow functional programming principles where possible.
Prefer immutable data (const, readonly).
Support exactOptionalPropertyTypes by explicitly including | undefined in optional property definitions, e.g. readonly foo?: string | undefined.
Use interfaces for data structures and type definitions.
When a function only takes one parameter and that parameter is an untyped object, name that parameter's interface Options.
```
interface Options { /* ... */ }
export default function myFn({ /* ... */ }: Options): void {}
```

Do not prefix interfaces with I (e.g., use User instead of IUser) unless the name is already taken. For example, if a React component is already named User, then fallback to IUser for the interface.

typescript