/**
 * Atomically modifies the `FiberRef` with the specified function and returns
 * the old value.
 */
export declare const getAndUpdate: <A>(
  f: (a: A) => A
) => (fiberRef: import("./fiberRef").FiberRef<A>) => import("../Effect").UIO<A>
//# sourceMappingURL=getAndUpdate.d.ts.map
