import { Persistence, ReactNativeAsyncStorage } from "firebase/auth";
export declare const enum PersistenceType {
    SESSION = "SESSION",
    LOCAL = "LOCAL",
    NONE = "NONE"
}
export type PersistedBlob = Record<string, unknown>;
export interface Instantiator<T> {
    (blob: PersistedBlob): T;
}
export type PersistenceValue = PersistedBlob | string;
export declare const STORAGE_AVAILABLE_KEY = "__sak";
export interface StorageEventListener {
    (value: PersistenceValue | null): void;
}
export interface PersistenceInternal extends Persistence {
    type: PersistenceType;
    _isAvailable(): Promise<boolean>;
    _set(key: string, value: PersistenceValue): Promise<void>;
    _get<T extends PersistenceValue>(key: string): Promise<T | null>;
    _remove(key: string): Promise<void>;
    _addListener(key: string, listener: StorageEventListener): void;
    _removeListener(key: string, listener: StorageEventListener): void;
    _shouldAllowMigration?: boolean;
}
export declare function getReactNativePersistence(storage: ReactNativeAsyncStorage): Persistence;