import { Ref } from '../ref.js';
import { PdfToken } from '../tokens/token.js';
import { PdfArray } from './pdf-array.js';
import { PdfDictionary } from './pdf-dictionary.js';
import { PdfHexadecimal } from './pdf-hexadecimal.js';
import { PdfNumber } from './pdf-number.js';
import { PdfObject } from './pdf-object.js';
import { PdfObjectReference } from './pdf-object-reference.js';
export type PdfTrailerEntries = {
    Size: PdfNumber;
    Root?: PdfObjectReference;
    Info?: PdfObjectReference;
    Prev?: PdfNumber;
    XRefStm?: PdfNumber;
    Encrypt?: PdfObjectReference;
    ID?: PdfArray<PdfHexadecimal>;
};
export type PdfTrailerDictionary = PdfDictionary<PdfTrailerEntries>;
export declare class PdfTrailer extends PdfObject {
    dict: PdfTrailerDictionary;
    offset: Ref<number>;
    constructor(entries: PdfTrailerEntries | PdfDictionary<PdfTrailerEntries>);
    toJSON(): {
        type: string;
        dict: {
            type: string;
            entries: Record<string, object>;
        };
    };
    protected tokenize(): PdfToken[];
    cloneImpl(): this;
    setModified(modified?: boolean): void;
    isModified(): boolean;
}