declare global {
    namespace NodeJS {
        interface ProcessEnv {
            NODE_ENV: "development" | "test" | "production";
        }
    }
}
export declare const validEnvs: readonly ["development", "test", "production"];
export type NodeEnv = (typeof validEnvs)[number];
export declare const isValidEnv: (env: string) => env is NodeEnv;
export declare function getNodeEnv<E extends string = NodeEnv>(currentEnv?: E): NodeEnv;
/**
 * Detects whether the current Node process is running under the
 * `react-server` resolution condition — set with `--conditions react-server`
 * on the command line, or via `NODE_OPTIONS` containing the same flag.
 *
 * Servers rendering React Server Components run under this condition so
 * that `react` and `react-server-dom-esm` resolve to their server-side
 * exports.
 */
export declare function isReactServerCondition(): boolean;
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