export declare class BlackoutManager {
    private enabled;
    private redactionMarker;
    constructor(enabled?: boolean);
    processChunk(chunk: string, state: BlackoutState): {
        output: string;
        state: BlackoutState;
    };
    processText(text: string): string;
    createRedactionStream(): TransformStream<Uint8Array, Uint8Array>;
}
export interface BlackoutState {
    inRedactedSection: boolean;
    buffer: string;
}
export declare function applyBlackoutToStream(stream: ReadableStream, enabled: boolean): Promise<ReadableStream>;