For JupyterLab 2.x, have look there. You can watch the source directory and run JupyterLab at the same time in different terminals to watch for changes in the extension's source and automatically ...
jupyterlab-hdf5 is no longer actively maintained, and will not work with JupyterLab 4 or later. jupyterlab-h5web is the recommended replacement. Open and explore HDF5 files in JupyterLab. Can handle ...