import { PdfOperatorList } from './PdfOperatorList';
import { PdfOperatorSelectionFn } from './PdfOperatorSelection';
export declare type PdfOperatorFilter = (operator: PdfOperator) => boolean;
export declare class PdfOperator {
    private list;
    fn: string;
    args: any[];
    constructor(list: PdfOperatorList, fn: string, args?: any[]);
    get index(): number;
    get prev(): PdfOperator;
    get next(): PdfOperator;
    before(filter: PdfOperatorFilter | string): PdfOperator;
    after(filter: PdfOperatorFilter | string): PdfOperator;
    select(fn: PdfOperatorSelectionFn): object;
    serialize(): string;
}