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At Mozilla, we want WebAssembly to be as fast as it can be.
This started with its design, which gives it great throughput. Then we improved load times with a streaming baseline compiler. With this, we compile code faster than it comes over the network.
So what’s next?
One of our big priorities is making it easy to combine JS and WebAssembly. But function calls between the two languages haven’t always been fast. In fact, they’ve had a reputation for being slow, as I talked about in my first series on WebAssembly.
That’s changing, as you can see.
This means that in the latest version of Firefox Beta, calls between JS and WebAssembly are faster than non-inlined JS to JS function calls. Hooray!