import { PdfAppearanceStream } from './pdf-appearance-stream.js';
import { PdfFormFieldFlags } from '../fields/pdf-form-field-flags.js';
/**
 * Appearance stream for button fields (checkboxes, radio buttons).
 */
export declare class PdfButtonAppearanceStream extends PdfAppearanceStream {
    constructor(ctx: {
        width: number;
        height: number;
        contentStream: string;
    });
    static buildYesContent(width: number, height: number, flags: number | PdfFormFieldFlags): PdfButtonAppearanceStream;
}