/**
 * @file Core primitives and fundamental constants. Holds sentinels,
 *   unknown/empty tokens, the internals symbol, and a few shared env-var name
 *   strings. Intentionally kept small - prefer moving constants to a more
 *   specific `src/constants/*` module when possible.
 */
export declare const kInternalsSymbol: unique symbol;
export declare const LOOP_SENTINEL = 1000000;
export declare const UNKNOWN_ERROR = "Unknown error";
export declare const UNKNOWN_VALUE = "<unknown>";
export declare const EMPTY_FILE = "/* empty */\n";
export declare const EMPTY_VALUE = "<value>";
export declare const UNDEFINED_TOKEN: undefined;
export declare const COLUMN_LIMIT = 80;
export declare const V = "v";
export declare const NODE_AUTH_TOKEN = "NODE_AUTH_TOKEN";
export declare const NODE_ENV = "NODE_ENV";
