export interface CredentialStore {
    store(key: string, value: string): void;
    read(key: string): string | null;
    delete(key: string): void;
}
export declare function defaultCredentialStore(): CredentialStore;
export declare const KEY_CLIENT_ID = "client-id";
export declare const KEY_CLIENT_SECRET = "client-secret";
export declare const KEY_REFRESH_TOKEN = "refresh-token";
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