import type { SecretStore } from "./types.js";
export declare function key(providerId: string): string;
export declare class MigratingSecretStore implements SecretStore {
    private readonly store;
    private readonly legacyStore;
    private pendingMutation;
    constructor(store: SecretStore, legacyStore?: SecretStore | null);
    get(options?: {
        readOnly?: boolean;
    }): Promise<string | null>;
    set(value: string): Promise<void>;
    delete(): Promise<void>;
    private mutate;
}