Type Alias AssertPromise<T>

AssertPromise: T

Assert that a type is a Promise.

Type Parameters

T extends Promise<any>
Type that must be a Promise

Remarks

Ensures the type extends the built-in Promise class.

Example

type A = AssertPromise< Promise< number > >;  // ✓
type B = AssertPromise< number >;             // ✗ TS error