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JupyterLab Extensions by Examples

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### Problem There is an excellent example on how to add a button to the notebook toolbar, which boils down to https://github.com/jupyterlab/extension-examples/blob/9c35013ce5da125f1b5865b3f7cbb301970d5970/toolbar-button/src/index.ts#L67 Now, I would like to do the same...

enhancement

It might be constructive to explain the distinction in the effects of `pip install -e .` and `jupyter labextension develop . --overwrite`. ``` # install the extension in editable mode...

### Problem The releaser files are not documented in the hello world examples. ### Proposed Solution Document them ### Additional context N/A

enhancement

Is there a minimum viable example anywhere, ideally in Javascript, of how to: - iterate each cell in a notebook; - inspect the cell type; - inspect the cell metadata,...

enhancement

Hi everybody, I'm looking for an example on how to add an element between menu bar of the notebook and first cell of the notebook. Currently, the extension has an...

### Problem In some cases, extension authors want to replace some of the default JupyterLab components with their own. There are already some details about this in the docs: https://jupyterlab.readthedocs.io/en/stable/extension/extension_dev.html#disabledextensions...

enhancement

Something that comes back often is the question of testing. So there could be an example about this that would cover several points such as: - setting up `jest` -...

Follow-up to https://github.com/jupyterlab/extension-examples/pull/119 Starting from JupyterLab 3.0 extensions can now be installed via `pip`, which is the way described in these examples. New files have been added to each example,...

Fixes #120 This approach uses the suggestion of applying the upgrade script

...the documentation seemed to indicated that they were moving away from that practice: "CSS classnames are defined inline in the code. We used to put them as all caps file-level...