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WebAssembly is a new type of code that can be run in modern web browsers — it is a low-level assembly-like language with a compact binary format that runs with near-native performance and provides languages such as C/C++ with a compilation target so that they can run on the web.
As far as I know, there are two ways to run Processing-java sketches in browser, one is processing.js, other is p5.js.
The performance of webassembly is much better than p5.js or processing.js, IMO. And there is no need to rewrite the code.
But now there is no official webassembly support for Java, maybe it is full of challenges.
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