import { nothing } from 'immer';
import { Producer } from 'immer';
import { Signal } from 'signal-polyfill';

declare interface Atom<Value> {
    /**
     * Staged value used during transactions.
     * @private
     */
    _s: Signal.State<Value>;

    /**
     * Committed value.
     * @private
     */
    _c: Signal.State<Value>;
}

export { nothing }

/**
 * Immutably update the value of an atom using imperative syntax.
 *
 * NOTE: This requires `immer` to be installed.
 */
export declare const patch: <Value>(atom: Atom<Value>, recipe: Producer<Value>) => void;

export { }