export type LoadEnvOptions = {
    /**
   * The root path to load the env file
   * @default process.cwd()
   */ cwd?: string;
    /**
   * Used to specify the name of the .env.[mode] file
   * @default process.env.NODE_ENV
   */ mode?: string;
    /**
   * The prefix of public variables
   * @default ['PUBLIC_']
   */ prefixes?: string[];
    /**
   * Specify a target object to store environment variables.
   * If not provided, variables will be written to `process.env`.
   * @default process.env
   */ processEnv?: Record<string, string>;
};
export type LoadEnvResult = {
    /**
   * All environment variables in the .env file
   */ parsed: Record<string, string>;
    /**
   * The absolute paths to all env files
   */ filePaths: string[];
    /**
   * Environment variables that start with prefixes.
   *
   * @example
   * ```ts
   * {
   *   PUBLIC_FOO: 'bar',
   * }
   * ```
   **/ rawPublicVars: Record<string, string | undefined>;
    /**
   * Formatted environment variables that start with prefixes.
   * The keys contain the prefixes `process.env.*` and `import.meta.env.*`.
   * The values are processed by `JSON.stringify`.
   *
   * @example
   * ```ts
   * {
   *   'process.env.PUBLIC_FOO': '"bar"',
   *   'import.meta.env.PUBLIC_FOO': '"bar"',
   * }
   * ```
   **/ publicVars: Record<string, string>;
    /**
   * Clear the environment variables mounted on `process.env`
   */ cleanup: () => void;
};
export declare function loadEnv({ cwd, mode, prefixes, processEnv }?: LoadEnvOptions): LoadEnvResult;