export interface PreAuthSession {
    sessionId: string;
    clientId: string;
    redirectUri: string;
    state: string;
    codeChallenge: string;
    codeChallengeMethod: string;
    /** Serialized CryptoKeyPair for later credential retrieval */
    keyPairJwk: JsonWebKey;
    passphrase: string;
    expiresAt: number;
}
export interface IOAuthSessionCache {
    save(session: PreAuthSession): void;
    getAndDelete(sessionId: string): PreAuthSession | null;
}
export declare class InMemoryAuthCache implements IOAuthSessionCache {
    private cache;
    save(session: PreAuthSession): void;
    getAndDelete(sessionId: string): PreAuthSession | null;
}
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