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How to Optimize Your JavaScript Runtime
Wiser is a tool that Facebook developed for WebAssembly. It runs the top level of a WebAssembly program and then generates a new one with the end state from running these top level instructions. What this means for JavaScript is it ends up running your top level scope of your JavaScript application. And when we're compiling your program to WebAssembly, so the toplevel of your application has already executed and the runtime has already like initialized.