Type Alias ResultOnce<R>

ResultOnce: R extends Promise<unknown> ? Promise<Awaited<R>> : R

Type helper that awaits Promise types and passes through non-Promise types. This ensures that if a function returns a Promise, the once method also returns Promise, and if the function returns T (non-Promise), once returns T directly.

Uses the built-in Awaited utility type to properly handle nested Promises and thenable objects.

Type Parameters

R
The type to process

Example

type A = ResultOnce<Promise<number>>; // Promise<number>
type B = ResultOnce<string>;          // string
type C = ResultOnce<number>;          // number
type D = ResultOnce<Promise<Promise<number>>>; // Promise<number>

Type Alias ResultOnce<R>

Type Parameters

Example

Settings