/**
 * Maximum bytes a single source file may occupy when read for parsing (10 MB).
 * Mirrors the fitness engine's `FileAccessor` `FILE_TOO_LARGE` ceiling.
 */
export declare const MAX_SOURCE_FILE_BYTES = 10000000;
/**
 * Read a source file as UTF-8 with a per-file size guard. Throws if the file
 * exceeds `maxBytes` (default {@link MAX_SOURCE_FILE_BYTES}) — by `statSync`
 * size (checked before the read, so an oversized file is never loaded) or by
 * post-read length (closing the stat→read TOCTOU window). A missing/unreadable
 * file surfaces the underlying `statSync` error, exactly as the prior direct
 * `readFileSync` surfaced its own.
 *
 * @throws {Error} When the file exceeds `maxBytes` (by `statSync` size or
 *   post-read length), or when the underlying `statSync`/`readFileSync` fails
 *   (e.g. a missing or unreadable file). Adapter parse loops catch this per file
 *   and record a `ParseError`, so the throw is non-fatal.
 */
export declare function readSourceFileGuarded(path: string, maxBytes?: number): string;
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