Use State Implementation in Javascript

use_state.js

const React = (function () {
    let _state;
    return {
        useState: function (initialValue) {
            if (typeof _state === 'undefined') _state = initialValue;
            function setState(newVal) {
                _state = newVal;
            }
            return [_state, setState];
        },
        render: function (Component) {
            const C = Component();
            C.render();
            return C;
        }
    };
})();

const Component = function () {
    const [count, setCount] = React.useState(0);
    return {
        render: function () {
            console.log(count);
        },
        click: function () {
            setCount(count + 1);
        }
    };
}

var App = React.render(Component); // 0
App.click();
var App = React.render(Component); // 1