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How to convert Java bytecode to Webassembly using CheerpJ compiler

I'm not sure how can I compile my Java code to wasm using CheerpJ compiler.

In the documentation all I can find is how to compile it to Javascript file, but it should be able to compile it to wasm as well. Can anyone help me with the command.

Solution

  • CheerpJ lead developer here. CheerpJ does uses WebAssembly internally for parts of the Java runtime. It does not use WebAssembly as a compilation target for Java bytecode.

    The reason for this is that WebAssembly is just not a good target for Java, while JavaScript is. CheerpJ generates very efficient JavaScript by using type hints and making sure all objects have a well-known structure that never changes.