You Might Not Need Binary AST™https://twitter.com/v8js/status/1117807107972243456 …
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Even if it's off-thread, it still can be a valuable optimisation, especially in apps where most content can depend on that JS being parsed&compiled first.
With resource preloading and script streaming, scripts are usually already parsed + compiled (off the main thread!) by the time the HTML parser sees the <script>, at which point we can start executing right away.
I’m not sure if Binary AST can offer any significant benefit. 
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