Performance Showdown: Rust vs Javascript

After spending some weeks playing with Rust, I felt ready to test my skills and try some programming challenges in the Advent Of Code. My approach to tackle some of those challenges was to solve them on Javascript first (I use it in my day to day) to then port the code to Rust, while porting I just focus on getting the Rust code as elegant as possible. It was after finishing porting this puzzle in particular and feeling a sense of accomplishment that I decided to test how the Rust compiled code will perform against Javascript interpreter.
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Finding Performance Bottlenecks in JavaScript.

How to use the Chrome performance monitor to optimise JavaScript performance.
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