export declare class GCSConfig {
    static bucketName: string;
    static defaultUploadAPI: string;
    static defaultStorageAPI: string;
    static envUploadAPI: string | undefined;
    static envStorageAPI: string | undefined;
    static authScopes: string[];
    private static _uploadAPI?;
    private static _storageAPI?;
    static get emulatorHost(): string | undefined;
    static get isEmulator(): boolean;
    static get uploadAPI(): string;
    static get storageAPI(): string;
}