/**
 * Node.js environment access.
 */
export declare function getEnv(key: string): string | undefined;
export declare function getEnv(key: string, defaultValue: string): string;
export declare function getCwd(): string;
export declare function isProduction(): boolean;
export declare function isDevelopment(): boolean;
export declare function getEnvFlag(key: string): boolean;
export declare function isDebug(): boolean;
export declare function setEnv(key: string, value: string): void;
export declare function isEdgeRuntime(): boolean;
export declare function isServerless(): boolean;
export declare function supportsAnsi(): boolean;