Eject

Eject lets you export built-in extensions (like Journal, Monaco Editor) to user-space so you can edit and customize them.

How It Works

Built-in extensions run directly in the app for best performance. When you eject one:

Its TypeScript source code is extracted
Compiled to JavaScript
Saved as a regular user extension with the ejected/ prefix

Example: Customizing Journal

Let’s say you want to customize the built-in Journal extension:

Go to Settings → Extensions
Find Journal and click Eject
Now you’ll see ejected/journal/index in the extensions list
Click to preview it — it works just like the original Journal
Edit the code to customize (change styles, add features, etc.)
Pin it — Add your ejected Journal to the left sidebar tabs as a quick entry point
Your customized Journal now appears in the sidebar alongside the default one

Multi-File Extensions

Some extensions (like Journal) have multiple files. Each file becomes a separate extension:

ejected/journal/index — main component
ejected/journal/use-journals — dependency
ejected/journal/utils — utilities

Important Notes

	Built-in	Ejected
Editable	❌ No	✅ Yes
Performance	Native	Slight sandbox overhead
Updates	Auto	Manual (re-eject to update)
Runs in	Main app	iframe sandbox

Use Cases

Customize — Change styles, add features to Journal
Learn — Study how Monaco Editor works
Fork — Build your own version of Media Preview

Troubleshooting

“Already Ejected” error — Delete the existing ejected extension first.

Which version is used? — Both extensions are available. For some extension types (like File Handlers), you may see both options. Disable the built-in one if you only want your customized version.

View source code — You can browse the source code of all built-in extensions at github.com/mayneyao/eidos/tree/dev/extensions