import { EventEmitter, OnInit } from '@angular/core';
import { AngularFireStorage, AngularFireUploadTask } from "@angular/fire/storage";
import { Observable } from "rxjs";
import { AngularFirestore } from "@angular/fire/firestore";
import { UploadTaskSnapshot } from "@angular/fire/storage/interfaces";
export declare type ImgResult = {
    width: number;
    height: number;
    src: string | ArrayBuffer | null;
};
export declare class UploadTaskComponent implements OnInit {
    private storage;
    private db;
    file: File;
    directory: string;
    allowedFileTypes: string;
    allowedImageRation: number[];
    maxSize: number;
    minSize: number;
    completed: EventEmitter<void>;
    task: AngularFireUploadTask;
    snapshot: Observable<UploadTaskSnapshot>;
    imgResult: ImgResult;
    path: string;
    constructor(storage: AngularFireStorage, db: AngularFirestore);
    ngOnInit(): Promise<void>;
    startUpload(): Promise<void>;
    isActive(snapshot: any): boolean;
    isImage(): boolean;
    imageResult(): Promise<ImgResult>;
}