import { PdfObjectReference } from '../index.js';
import { PdfToken } from '../tokens/token.js';
import { PdfWhitespaceToken } from '../tokens/whitespace-token.js';
import { PdfIndirectObject } from './pdf-indirect-object.js';
import { PdfObject } from './pdf-object.js';
export declare class PdfArray<T extends PdfObject = PdfObject> extends PdfObject implements Iterable<T> {
    items: T[];
    innerTokens: PdfWhitespaceToken[];
    constructor(items?: T[]);
    static refs(items: PdfIndirectObject[]): PdfArray<PdfObjectReference>;
    get length(): number;
    push(item: T): void;
    toJSON(): {
        type: string;
        items: object[];
    };
    get isTrailingDelimited(): boolean;
    protected tokenize(): PdfToken[];
    cloneImpl(): this;
    setModified(modified?: boolean): void;
    isModified(): boolean;
    setImmutable(immutable?: boolean): void;
    refs(): PdfArray<PdfObjectReference>;
    [Symbol.iterator](): Iterator<T>;
}