import { IObservableLikeValue } from '../../Core/Observable';
export interface IObservableExpression {
    /**
     * Using an observableExpression you can sign up for an action instead of
     * all actions which is the default.
     */
    action?: string;
    /**
     * filter function that determines whether or not an action should affect
     * the state of the Observer.
     *
     * @param value The observable value that is being supplied for the action.
     * @param action The action that has taken place.
     *
     * @returns true if the Observer should setState, false if the change should
     * be ignored.
     */
    filter?: (value: any, action: string) => boolean;
    /**
     * The observableValue is the value being observed. When actions are fired,
     * the filter is called and the results determine whether the component
     * changes state.
     */
    observableValue: IObservableLikeValue<any>;
}
export interface IObserverProps {
    /**
     * All props that should be passed down to the child element.
     * These properties are IObservableLikeValues, meaning that if they are observable,
     * we will attempt to subscribe to their changes.
     */
    [propName: string]: IObservableLikeValue<any> | IObservableExpression;
}