Type Alias NowId<T>

NowId: {
    [K in keyof T]: T[K] extends (...args: any[]) => any
        ? WithNowId<T[K]>
        : T[K]
}

For each property in type T:

If the property is a function, prepend a $id context parameter.
If it's not a function, leave it unchanged.

Type Parameters

T

Example

interface MathFns {
  add: (a: number, b: number) => number;
  version: string;
}

type MathWithId = NowId<MathFns>;
// {
//   add: (context: { $id: string, annotation?: string }, a: number, b: number) => number;
//   version: string;
// }