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Boa (JavaScript engine)
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<p>Boa is an <a href="/facts/Open-source/7X9rCdz4">open-source</a> <a href="/facts/JavaScript_engine/6YEG2JFH">JavaScript</a> engine written in Rust. Boa was introduced at JSConf EU 2019 by Jason Williams. </p><p>Williams created Boa in 2017 after working on <a href="/facts/Servo_(software)/GjbKA0Ny">Servo</a> and being inspired by the "written from scratch" CSS engine. He was eager to work on a JavaScript engine using Rust to learn more about how JavaScript implementations work, since then the project has had over 100 contributors. Overtime the engine gained more prominent features such as <a href="/facts/Bytecode/EPkMFR7M">bytecode</a> compilation, better conformance to the specification and ergonomic API design. </p>