export declare const isBrowser: () => boolean;
export declare const isNode: () => boolean;
export declare const isReactNative: () => boolean;
/**
 * Detects Safari or iOS WebKit environments where cross-origin iframes
 * are blocked by Intelligent Tracking Prevention (ITP).
 * On iOS, ALL browsers use WebKit (Apple requirement), so all are affected.
 */
export declare const isSafariOrIOSWebView: () => boolean;
declare const _default: {
    isBrowser: () => boolean;
    isNode: () => boolean;
    isReactNative: () => boolean;
    isSafariOrIOSWebView: () => boolean;
};
export default _default;