Performance of build extensions

Hi guys, I’m currently developing a extension of jupyterlab. Everything goes well except the building time it takes, especially the jupyter lab --watch always takes like 10 seconds after my package built.

Can we use some techs to boost the built time of jupyterlab? Like npm link or webpack-dev-server ?

@louis-she there is a related issue on the jupyterlab repo, if you want to follow along or comment there too:

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Thank for the issue :slight_smile: