export declare type ObservableKey = string | number | symbol;
export declare type Observable = {
    [key in ObservableKey]: any;
} & {
    $isObservable: boolean;
    $isSettled: boolean;
    $nextTick: (callback?: () => void) => Promise<void>;
    $notify: (propertyKey: PropertyKey) => void;
    $watch: (propertyKey: PropertyKey | PropertyKey[] | Function, callback?: Function) => void;
    $watchSync: (propertyKey: PropertyKey | PropertyKey[] | Function, callback?: Function) => void;
    $track: Function;
    $effect: Function;
};
export declare const tick: Promise<void>;
export declare const nextTick: (callback?: (() => void) | undefined) => Promise<void>;
export declare const observable: (object: any) => Observable;