export declare class IPDFOperatorSingleton {
    operator: PDFOperator;
    asterisk?: IPDFOperatorSingleton;
}
declare class PDFOperator {
    static createSingletonOp: (op: string) => IPDFOperatorSingleton;
    toString: () => string;
    bytesSize: () => number;
    copyBytesInto: (buffer: Uint8Array) => Uint8Array;
}
export default PDFOperator;