import type { CipherSuite } from './types.js';
export declare class OpenStream {
    readonly chunkSize: number;
    readonly framed: boolean;
    private readonly cipher;
    private readonly keys;
    private readonly maxWireChunk;
    private counter;
    private state;
    constructor(cipher: CipherSuite, key: Uint8Array, preamble: Uint8Array);
    pull(chunk: Uint8Array, opts?: {
        aad?: Uint8Array;
    }): Uint8Array;
    finalize(chunk: Uint8Array, opts?: {
        aad?: Uint8Array;
    }): Uint8Array;
    dispose(): void;
    seek(index: number): void;
    private _stripFrame;
    toTransformStream(): TransformStream<Uint8Array, Uint8Array>;
}