import type { AnyCell, MapCell, SheetProxy, ValueCell } from "@okcontract/cells";
export declare class SyncCell<T> {
    readonly cell: ValueCell<T>;
    readonly first: MapCell<boolean, true>;
    private readonly _channel;
    private readonly _instanceId;
    private readonly _idSet;
    private readonly _key;
    constructor(proxy: SheetProxy, id: string, key: string, initialValue: T, name?: string);
    /**
     * Updates the internal cell value and broadcasts the change to other instances.
     */
    set(v: T | Promise<T> | AnyCell<T> | Promise<AnyCell<T>>): void | Promise<void>;
    setFirst(v: T | Promise<T> | AnyCell<T> | Promise<AnyCell<T>>): Promise<void>;
    /**
     * Subscribe to another cell.
     * - We don't propagate errors.
     */
    subscribeTo(cell: AnyCell<T>): Promise<void>;
    /**
     * Retrieves the current value of the cell.
     */
    get(): Promise<T>;
}