Function node

host/dom/src/main/state.js:26–31

(h)

    };

    const node = (h) => {
        if (h < 0 || h >= nodes.length || nodes[h] === null) {
            throw new Error('invalid DOM node handle: ' + h);
        }
        return nodes[h];
    };

    const allocList = (list) => {
        if (!list || list.length === 0) return '';