3     #preview = null;  field in PreviewPlugin
7         this.#preview = document.createElement('div');
8         this.#preview.classList.add('plugin-preview');
9         this.#preview.style.position = 'absolute';
10         this.#preview.style.top = '0';
11         this.#preview.style.left = '0';
12         this.#preview.style.display = 'none';
13         document.body.append(this.#preview);
17         const selector = JSINFO.plugin.preview.selector;
39                 this.#preview.innerHTML = await data.text();
40                 this.#preview.style.display = 'block';
48         this.#preview.style.top = e.pageY + 10 + 'px';
49         this.#preview.style.left = e.pageX + 10 + 'px';
54         this.#preview.style.display = 'none';
63     const preview = new PreviewPlugin();  constant
64     preview.attach();