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Re:A New Bytecode Format for JavaScriptCore by floatboth on Friday June 21, 2019 @06:05PM (#20246650)
> js seems to already have a bytecode for their JIT runtime

This is kind of a nonsensical statement. JS itself doesn't have a bytecode, it's just a specification of the language you write scripts in.

Each implementation has its own intermediate representations, including bytecode formats.

WASM is a vendor-neutral standard that is designed as a compilation target and designed with safety in mind.

SpiderMonkey/JSC/V8 internal bytecode formats are just that, compiler internals.

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