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by SassyBird 716 days ago
It’s Qt: https://github.com/rstudio/rstudio/blob/main/src/cpp/desktop...

It seems with some JavaScript generated from Java via Gwt. Regardless, I prefer it over VSCode UI.
1 comments
jmcphers 716 days ago
RStudio was based on QtWebKit, then migrated to QtWebEngine, then finally migrated to Electron (which is what it uses today). You'll find some vestigial Qt code in the repository but it isn't used for the shipping releases any more.
link