import { Transform } from 'stream';
import { NodeMaterialsManager, SignaturePolicy, ClientOptions } from '@aws-crypto/material-management-node';
declare const PortableTransformWithType: new (...args: any[]) => Transform;
export declare class ParseHeaderStream extends PortableTransformWithType {
    private materialsManager;
    private commitmentPolicy;
    private signaturePolicy;
    private maxEncryptedDataKeys;
    private _headerState;
    constructor(signaturePolicy: SignaturePolicy, { commitmentPolicy, maxEncryptedDataKeys }: ClientOptions, cmm: NodeMaterialsManager);
    _transform(chunk: any, encoding: string, callback: (err?: Error | null, data?: Uint8Array) => void): void;
    _flush(callback: (err?: Error) => void): void;
}
export {};
//# sourceMappingURL=parse_header_stream.d.ts.map