import { type Credential } from './credential.js';
export type AppOptions = {
    credential: Credential;
    projectId?: string;
};
export type InitializeAppOptions = {
    credential?: Credential;
    serviceAccountJson?: string;
    projectId?: string;
};
export type App = {
    name: string;
    options: AppOptions;
};
export declare function initializeApp(options?: InitializeAppOptions, name?: string): App;
export declare function getApps(): App[];
export declare function getApp(name?: string): App;
export declare function deleteApp(app: App): Promise<void>;
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