import type { DurableSegment, SegmentDurability } from "./segment-uploader.js";
export declare const SEGMENT_DB_PREFIX = "proctoring-segments";
export declare function segmentDbName(sessionId: string, kind: "screen" | "webcam"): string;
export interface DurableSegmentStoreOptions {
    sessionId: string;
    kind: "screen" | "webcam";
}
/**
 * IndexedDB queue for independent recording objects. A record is deleted
 * only after the API acknowledges that its object exists in durable storage.
 */
export declare class DurableSegmentStore implements SegmentDurability {
    private readonly dbName;
    private db;
    constructor(options: DurableSegmentStoreOptions);
    name(): string;
    open(): Promise<void>;
    list(): Promise<DurableSegment[]>;
    listSequences(): Promise<number[]>;
    get(sequence: number): Promise<DurableSegment | null>;
    put(record: DurableSegment): Promise<void>;
    remove(sequence: number): Promise<void>;
    nextSequence(preferred: number): Promise<number>;
    close(): Promise<void>;
    private requireDb;
}
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