opendash/dist/hooks/useAppState.js

open.DASH data visualization framework

import * as React from "react";
import { useOpenDashApp, useForceRender } from "..";
export function useAppState(selector) {
    var app = useOpenDashApp();
    var forceRender = useForceRender();
    var selectorRef = React.useRef(null);
    var valueRef = React.useRef(null);
    selectorRef.current = selector;
    React.useEffect(function () {
        return app.state.subscribe(function () {
            var currentValue = app.state.select(selectorRef.current);
            if (valueRef.current !== currentValue) {
                forceRender();
            }
        });
    }, []);
    valueRef.current = app.state.select(selector);
    return valueRef.current;
}
//# sourceMappingURL=useAppState.js.map