/**
 * @param {Record<string, string>} headers
 * @returns {ClientHints}
 */
export function parseClientHints(headers: Record<string, string>): ClientHints;
/**
 * @param {ClientHints} ch
 * @param {Record<string, any>} browser
 * @returns {Record<string, any>}
 */
export function applyBrowserHints(ch: ClientHints, browser: Record<string, any>): Record<string, any>;
/**
 * @param {ClientHints} ch
 * @param {Record<string, any>} device
 * @returns {Record<string, any>}
 */
export function applyDeviceHints(ch: ClientHints, device: Record<string, any>): Record<string, any>;
/**
 * @param {ClientHints} ch
 * @param {Record<string, any>} os
 * @returns {Record<string, any>}
 */
export function applyOsHints(ch: ClientHints, os: Record<string, any>): Record<string, any>;
/**
 * @param {ClientHints} ch
 * @param {Record<string, any>} cpu
 * @returns {Record<string, any>}
 */
export function applyCpuHints(ch: ClientHints, cpu: Record<string, any>): Record<string, any>;
/**
 * @returns {string}
 */
export function buildAcceptCHValue(): string;
export type ClientHints = {
    brands?: {
        brand: string;
        version: string;
    }[] | undefined;
    fullVersionList?: {
        brand: string;
        version: string;
    }[] | undefined;
    mobile?: boolean | undefined;
    model?: string | undefined;
    platform?: string | undefined;
    platformVersion?: string | undefined;
    architecture?: string | undefined;
    formFactors?: string[] | undefined;
    bitness?: string | undefined;
};