Method then

src/types.d.ts:182–182

(onFulfilled?: (value: R) => U | Thenable<U>, onRejected?: (error: any) => U | Thenable<U>)

interface Promise<R> extends Thenable<R> {
    then<U>(onFulfilled?: (value: R) => U | Thenable<U>, onRejected?: (error: any) => U | Thenable<U>): Promise<U>;
    then<U>(onFulfilled?: (value: R) => U | Thenable<U>, onRejected?: (error: any) => void): Promise<U>;
	catch<U>(onRejected?: (error: any) => U | Thenable<U>): Promise<U>;
}