Function DashWrapper

dash/dash-renderer/src/wrapper/DashWrapper.tsx:69–533

({
    componentPath,
    _dashprivate_error,
    _passedComponent, // pass component to the DashWrapper in the event that it is a newRender and there are no layouthashes
    _newRender, // this is to force the component to newly render regardless of props (redraw and component as props) is passed from the parent
    ...extras
}: DashWrapperProps)

};

function DashWrapper({
    componentPath,
    _dashprivate_error,
    _passedComponent, // pass component to the DashWrapper in the event that it is a newRender and there are no layouthashes
    _newRender, // this is to force the component to newly render regardless of props (redraw and component as props) is passed from the parent
    ...extras
}: DashWrapperProps) {
    const dispatch = useDispatch();
    const memoizedKeys: MutableRefObject<MemoizedKeysType> = useRef({});
    const newRender = useRef(false);
    const freshRenders = useRef(0);
    const renderedPath = useRef<DashLayoutPath>(componentPath);
    let renderComponent: any = null;
    let renderComponentProps: any = null;
    let renderH: any = null;

    // Get the config for the component as props
    const config: DashConfig = useSelector(selectConfig);

    // Select component and it's props, along with render hash, changed props and the reason for render
    const [component, componentProps, h, changedProps, renderType] =
        useSelector(selectDashProps(componentPath), selectDashPropsEqualityFn);

    renderComponent = component;
    renderComponentProps = componentProps;
    renderH = h;

    useMemo(() => {
        if (_newRender) {
            newRender.current = true;
            renderH = 0;
            freshRenders.current += 1;
            if (renderH in memoizedKeys.current) {
                delete memoizedKeys.current[renderH];
            }
        } else {
            newRender.current = false;
        }
        renderedPath.current = componentPath;
    }, [_newRender]);

    const setProps = (newProps: UpdatePropsPayload) => {
        const {id} = renderComponentProps;
        const {_dash_error, ...restProps} = newProps;

        // eslint-disable-next-line @typescript-eslint/ban-ts-comment
        // @ts-ignore
        dispatch((dispatch, getState) => {
            const currentState = getState();
            const {graphs} = currentState;
            const oldLayout = getComponentLayout(
                renderedPath.current,
                currentState
            );
            if (!oldLayout) return;
            const {props: oldProps} = oldLayout;
            if (!oldProps) return;
            const changedProps = pickBy(