/**
 * Routines for corking stdout and stderr
 */
import * as stream from 'stream';
/**
 * Register values to be replaced with a placeholder in all buffered output
 */
export declare function registerSecrets(...values: Array<string>): void;
/**
 * Replace every registered secret in the given text with a placeholder
 */
export declare function redactSecrets(text: string): string;
export declare class MemoryStream extends stream.Writable {
    private parts;
    _write(chunk: Buffer, _encoding: string, callback: (error?: Error | null) => void): void;
    /**
     * The buffered output, with all registered secrets redacted
     */
    buffer(): Buffer<ArrayBuffer>;
    clear(): void;
    flushTo(strm: NodeJS.WritableStream): Promise<void>;
    toString(): string;
}