Link to JupyterLab resources

docs/source/extending/frontend_extensions.rst

@@ -8,4 +8,12 @@ This describes the basic steps to write a TypeScript extension for the Jupyter
 notebook front-end. This allows you to customize the behaviour of the various
 pages like the dashboard, the notebook, or the text editor.
 
-TODO: link to the JupyterLab documentation
+Starting with Notebook v7, front-end extensions for the notebook can be developed
+as prebuilt JupyterLab extensions.
+
+This means Notebook v7 is able to reuse many of the existing extensions from the JupyterLab ecosystem as is.
+
+If you would like to develop a prebuilt extension for Notebook v7, check out:
+
+- `JupyterLab Extension Tutorial <https://jupyterlab.readthedocs.io/en/latest/extension/extension_tutorial.html>`_: A tutorial to learn how to make a simple JupyterLab extension.
+- The `JupyterLab Extension Examples Repository <https://github.com/jupyterlab/extension-examples>`_: A short tutorial series to learn how to develop extensions for JupyterLab by example.