/**
 * Self-describing ball-file envelope helpers (engine-local copy).
 *
 * A ball file on disk (`.ball.json`) is the proto3-JSON representation of a
 * `google.protobuf.Any` wrapping exactly one top-level message — a `Program`
 * or `Module`. The contained type is carried by the Any type URL, which in
 * proto3 JSON is the `@type` field:
 * `{"@type": "type.googleapis.com/ball.v1.Program", <message fields…>}`.
 *
 * The engine operates on the raw proto3-JSON tree (not a decoded protobuf-es
 * Message), so unwrapping here just validates `@type` and strips it, returning
 * the message body unchanged. This is the canonical
 * `@ball-lang/shared`/`dart/shared/lib/ball_file.dart` behavior; it lives here
 * too because `@ball-lang/engine` has no dependency on `@ball-lang/shared`.
 */
/**
 * If `json` is a self-describing Any envelope (`@type` present), validate the
 * type URL and return the message body with `@type` stripped. If it is a plain
 * object without `@type` (an already-unwrapped Program/Module passed by a
 * caller), return it unchanged.
 *
 * Throws if `@type` is present but unrecognized.
 */
export declare function unwrapBallFile(json: any): any;
//# sourceMappingURL=ball_file.d.ts.map