import { PipeTransform } from "@angular/core";
import { BaseUserService } from "../services/user.service";
import * as i0 from "@angular/core";
export declare class UsernameFromIdPipe implements PipeTransform {
    private userService;
    static cache: {};
    constructor(userService: BaseUserService);
    transform(userId: string): Promise<string>;
    static ɵfac: i0.ɵɵFactoryDeclaration<UsernameFromIdPipe, never>;
    static ɵpipe: i0.ɵɵPipeDeclaration<UsernameFromIdPipe, "usernameFromId", false>;
}