When we talk about rich libraries we mean actual libraries for generating PDFs, reading barcodes, report generation, talking with all kinds of enterprise databases, GPU programming, parallel distributed algorithms, embedded development...
Not yet another packaging tool or fait-divers like pad left.
And the majority of them written in pure Java, not C++ wrapped in a JavaScript API.
How do you generate a PDF on such a cool JavaScript front end application?
Hint, you don't. Just hope that the browser does a good job with print to PDF, or run a server side pile of shell scripts, using LaTeX and Postscript, instead of a plain simple library.
And this is just one example from many, where JavaScript/Web sucks on the front-end.
Not yet another packaging tool or fait-divers like pad left.
And the majority of them written in pure Java, not C++ wrapped in a JavaScript API.