Type Alias Promisify<F>

Promisify: F extends (...args: infer A) => infer R
? (...args: A) => Promise<R>
: never

Promisify a function type.

Type Parameters

F
Function type to promisify

Remarks

Wraps a function's return type in a Promise, preserving argument types. Will result in never if input is not a function.

Example

type Fn = ( a: string, b: number ) => boolean;
type PromisifiedFn = Promisify< Fn >;
// ( a: string, b: number ) => Promise< boolean >