type UachFullVersion = {
    brand?: string;
    version?: string;
};
type Uach = {
    architecture?: string;
    bitness?: string;
    fullVersionList?: UachFullVersion[];
    mobile?: boolean;
    model?: string;
    platform?: string;
    platformVersion?: string;
    wow64?: boolean;
};
type UserAgentDataLike = {
    getHighEntropyValues: (hints: readonly string[]) => Promise<Uach>;
};
type WindowLike = import("../types.ts").WindowLike;
type WindowUachCapable = WindowLike & {
    navigator: NonNullable<WindowLike["navigator"]> & {
        userAgentData: UserAgentDataLike;
    };
};
export declare function hasUachApi(w: WindowLike): w is WindowUachCapable;
export declare function getUachCached(w: WindowLike): Uach | null;
export declare function fetchUach(w: WindowLike): Promise<Uach> | null;
export declare function uachToParams(uach: Uach | null): Record<string, string> | null;
export declare const __internal: {
    HIGH_ENTROPY_KEYS: readonly ["platform", "platformVersion", "architecture", "model", "bitness", "fullVersionList", "wow64", "mobile"];
};
export {};