Bubble.io plugin with Preact.js

About:

This is a simple proof-of-concept to set up a viable development workflow to build a Bubble plugin element using Preact.js. The aim is to allow plugin developers to break out of the limited Bubble plugin SDK.

Write up:

Steps to reproduce:

1. Clone this repository, run yarn to install dependencies.

2. Create a Bubble plugin. You can also fork this plugin to skip the next Bubble plugin setup steps.

   1. Add this piece of code into the shared header of Bubble:

      <script>
      function loadJS(url, module = false) {
          let scriptEle = document.createElement("script");
          scriptEle.setAttribute("src", url);
          scriptEle.setAttribute("type", module ? "module" : "text/javascript" );
          document.head.appendChild(scriptEle);
      }
      
      function loadCSS(url) {
          let link = document.createElement("link");
          link.rel  = 'stylesheet';
          link.type = 'text/css';
          link.href = url;
          link.media = 'all';
          document.head.appendChild(link);
      }
      
      window.devServerURL = "_*_DEV_SERVER_URL_*_";
      if (!!window.devServerURL) {
          loadJS(window.devServerURL + "/index.umd.js");
          loadCSS(window.devServerURL + "/style.css");
      }
      </script>

   2. Add a new Bubble plugin element. Set the update function as below:

      function(instance, properties, context) {
          if (!instance.data.element) {
              instance.data.element = document.createElement("custom-counter");
              instance.canvas.append(instance.data.element);
          }
          instance.data.element.properties = properties;
      }

3. Add the plugin into a test app, and set the DEV_SERVER_URL plugin key to be http://localhost:3000.

4. Put the new Bubble element in your test app.

5. Run yarn dev on your machine.

6. Open test app.

Caveats

• No hot reload right now. When you update the Preact code, you need to reload the browser tab again.
• Speed optimization is still in question.