import { LightWeightObjectChangeTracker } from '@schoolbelle/common/object-change-tracker';
export declare class AngularFirebaseDatabaseStub {
    private tracker;
    constructor(tracker?: LightWeightObjectChangeTracker);
    object(pathOrRef: string | firebase.database.Reference): AngularFireObjectStub;
    database: FirebaseDatabaseStub;
}
export declare class AngularFireObjectStub {
    private tracker;
    constructor(tracker?: LightWeightObjectChangeTracker, path?: string);
    valueChanges(): import("rxjs/internal/Observable").Observable<any>;
}
export declare class FirebaseDatabaseStub {
    private tracker;
    constructor(tracker?: LightWeightObjectChangeTracker);
    ref(path: string): firebase.database.Reference;
}
export declare class FirebaseRefStub {
    private _path;
    private delay;
    private tracker;
    constructor(tracker?: LightWeightObjectChangeTracker | LightWeightObjectChangeTracker, _path?: string, delay?: number);
    readonly path: string;
    child(path: any): FirebaseRefStub;
    set(data: any): Promise<{}>;
    get(): Promise<{}>;
    remove(): Promise<{}>;
    transaction(fn: Function): Promise<{}>;
    once(): Promise<{}>;
}
export declare class FirebaseSnapshotStub {
    private tracker;
    constructor(tracker?: LightWeightObjectChangeTracker);
    val(): any;
}