You can automatically start the signup-form dev server when developing Ghost by running Ghost (in root folder) via `yarn dev --all`. This will only build the production build, without the demo site.
Running via `yarn dev --all --signup` or `yarn dev --signup` will also serve the demo site on `http://localhost:6173`.
### Running the development version only
Run `yarn dev` (in package folder) to start the development server to test/develop the form standalone.
- This will generate a demo site on http://localhost:6173
- This will build and watch the production build and host it on http://localhost:6174/signup-form.min.js (different port!)
### Using the UMD build during development
Vite by default only supports HRM with an ESM output. But when loading a script on a site as a ESM module (`<scripttype="module"src="...">`), you don't have access to `document.currentScript` inside the script, which is required to determine the location to inject the iframe. In development mode we use a workaround for this to make the ESM HMR work. But this workaroudn is not suitable for production.
To test the real production behaviour without this hack, you can use http://localhost:6173/preview.html. This HTML page will use `http://localhost:6174/signup-form.min.js` directly.
