import { type SealedSecret } from './secret-box.js';
export declare const CONTINUATION_POSITION_CAP = 256;
export interface ContinuationKey {
    id: string;
    /** Raw AES-256 key, base64 encoded only inside adapter-private storage. */
    material: string;
    createdAt: number;
}
export interface ContinuationKeys {
    active: ContinuationKey;
    previous?: ContinuationKey;
}
export interface ContinuationPosition {
    sealed: SealedSecret;
    expiresAt: number;
}
/** Neither keys nor positions may be stored in module-readable scope SQL or a dump. */
export interface ContinuationStore {
    keys(): Promise<ContinuationKeys | null>;
    setKeys(keys: ContinuationKeys): Promise<void>;
    position(id: string, expiresAt: number): Promise<ContinuationPosition | null>;
    setPosition(id: string, position: ContinuationPosition): Promise<void>;
}
/** Everything that makes the position mean the same walk, with no raw input kept. */
export interface ContinuationBinding {
    scopeId: string;
    principal: string;
    operation: string;
    list: string;
    query: unknown;
}
/** Full visible pages are stateless; only a hidden budget stop needs a private locator. */
export declare function visibleContinuation(store: ContinuationStore, binding: ContinuationBinding, now?: () => number, legacyUsed?: () => void, writable?: boolean): {
    writable: boolean;
    seal(position: string, hidden?: boolean): Promise<string | null>;
    open(cursor: string): Promise<string>;
};
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