Here's an example of single-file Web Component. Markup (JSX syntax with embedded JS expressions), CSS and JS are in one file: https://github.com/wisercoder/uib

Here's an example of single-file Web Component. Markup (JSX syntax with embedded JS expressions), CSS and JS are in one file: https://github.com/wisercoder/uibuilder/blob/master/WebComponentsDemo/elements/ZxListEditor.tsx https://github.com/wisercoder/uibuilder/blob/master/WebCompo... All you need is this tiny 250-line lib: https://github.com/wisercoder/uibuilder https://github.com/wisercoder/uibuilder