@pipepack/enhanced-resolver/types/utils/promisify.d.ts

yet, reimplement enhanced-resolve with the idea 'simple is best'.

/**
 * @description - execute observable and extract the first
 * @author - huang.jian <hjj491229492@hotmail.com>
 */
import { Observable } from 'rxjs';
export declare function promisify<T>(source$: Observable<T>): Promise<T>;