@pipepack/enhanced-resolver/types/observable/json.d.ts

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

import { Observable } from 'rxjs';
import type { FileSystem } from '../interface/fs';
/**
 * use natural reject as failure of getting package.json
 */
export declare function json<T>(fs: FileSystem, absDescriptionFile: string): Observable<T>;