export declare const TERMS_URL = "https://gryt.chat/terms";
export declare const GUIDELINES_URL = "https://gryt.chat/community-guidelines";
export declare const TERMS_VERSION = "2026-09-03";
export declare const TERMS_STORAGE_KEY = "gryt.termsAgreement";
export interface TermsAgreement {
    version: string;
    agreedAt: string;
}
export interface TermsStorage {
    read: () => string | null | Promise<string | null>;
    write: (value: string) => void | Promise<void>;
}
/** What storage held, or null when nothing in it is an agreement. */
export declare function parseAgreement(raw: string | null | undefined): TermsAgreement | null;
/** Agreeing to newer terms covers older ones, so a downgrade doesn't ask twice. */
export declare function coversTerms(agreement: TermsAgreement | null, version?: string): boolean;
export declare function agreementAt(now: Date, version?: string): TermsAgreement;
export interface TermsGate {
    /** Runs `post` once this device has agreed: now, or after the person presses Agree. */
    postAfterAgreeing: (post: () => void) => void;
    agree: () => void;
    decline: () => void;
    /** Reads storage ahead of the first post, so that one doesn't wait for it. */
    load: () => void;
    asking: () => boolean;
    subscribe: (listener: () => void) => () => void;
}
export declare function createTermsGate(storage: TermsStorage, version?: string, now?: () => Date): TermsGate;