import { PdfOperatorList } from './PdfOperatorList.js';
import { PdfOperatorSelectionFn } from './PdfOperatorSelection.js';
export 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 | null;
    after(filter: PdfOperatorFilter | string): PdfOperator | null;
    select(fn: PdfOperatorSelectionFn): object;
    serialize(): string;
}
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