Make EditorJS work in Svelte(kit) SSR

If you're here, you've probably been having issues using EditorJs in Sveltekit (like me). Since SSR isn't supported in EditorJs (see discussion), you might encounter errors like this:

[vite] Error when evaluating SSR module /src/routes/+page.svelte: failed to import "@editorjs/editorjs"
|- ReferenceError: Element is not defined

Here's how I solved it:

1. Load Editor Asynchronously: Ensure the editor loads only on the client side using onMount to avoid SSR complications.

2. Element Initialization: Bind elements properly and handle initialization using onMount to ensure the element is available after component setup.

3. Be Sure To Import EditorJs Correctly (since it's a default export):

   • Default Import:

    const { default: EditorJs } = ...
   

• Destructuring Import:
  

   const Editor = ...
  const EditorJs = Editor.default
  

Here's the full solution:

Happy Hacking!

PS: If you're using Svelte 4, remember to change the Svelte-5-specific syntax. I'd advise you to switch as soon as possible tho.