Function pickGroups

pickGroups<T extends ApiContract, K extends string | number | symbol>(
contract: T,
...groups: K[],
): Readonly<Pick<T, K>>
Returns a new contract containing only the specified groups.

The TypeScript return type is Pick<T, K> — the compiler sees exactly the selected groups and no others. This provides full type safety on the narrowed contract when passed to createClient() or used as a server handler map.
Type Parameters
- T extends ApiContract
  The shape of the source contract.
- K extends string | number | symbol
  The union of group keys to keep.
Parameters
- contract: T
  The contract to select from.
- ...groups: K[]
  The group keys to include.
Returns Readonly<Pick<T, K>>
A new frozen contract with only the listed groups.
Example
```
const fullApi = defineApi({ todos: {...}, auth: {...}, admin: {...}, debug: {...} });

// Pick only the groups the frontend needs
const clientApi = pickGroups(fullApi, 'todos', 'auth');
// TypeScript: { todos: ..., auth: ... }
```
- Defined in libs/server/src/contract.ts:262