export declare const isJsDom: boolean | "";
export declare const isNode: boolean;
export declare const isBrowser: boolean;
export declare const isDeno: false | {
    deno: string;
    v8: string;
    typescript: string;
};
export declare const isInWorker: false | "classic" | "module";
/** node、browser、deno 皆为主线程，worker_ 开头皆为 worker 内部 */
export declare const env: string;