Boa (JavaScript engine)
| Boa | |
|---|---|
 | |
| Developer(s) | Boa Developers |
| Initial release | 10 June 2019 |
| Stable release | v0.19[1] / 9 July 2024
/ |
| Repository | https://github.com/boa-dev/boa |
| Written in | Rust[2] |
| Platform | x86-64, 32-bit ARM, AArch64 |
| Type | JavaScript and WebAssembly engine |
| License | MIT |
| Website | https://boajs.dev |
Boa is an open-source JavaScript engine written in Rust[2]. Boa was introduced at JSConf EU 2019 by Jason Williams [3].
Williams created Boa in 2017 to learn Rust, learn more about how JavaScript implementations work, since then the project has had over 100 contributors.[3][4] Overtime the engine gained more prominent features such as bytecode compilation[5], better improved for the specification[1]
Design
Boa is an open-source implementation of a JavaScript execution engine. The project is developed as a Rust library for embedding the JavaScript engine in Rust applications. Additionally, the authors of Boa provide a command-line interface (CLI) for users to interact with Boa as standalone JavaScript interpreter accessible from a command line.[6]
Boa follows the common interpreter design which approximately consists of a lexer, parser, compiler and bytecode interpreter[6]
Standards
Boa implements the ECMA-262 specification (ECMAScript). As of 6 September 2024 Boa has 88% conformance to Test262[7]
See also
- JerryScript, an ultra-lightweight JavaScript engine
- SpiderMonkey, a JavaScript engine used in Firefox
- List Of ECMAScript engines
References
- ^ a b "Boa release v0.19". boajs.dev. 9 July 2024.
- ^ a b "About Boa | Boa JS". boajs.dev. Boa Developers. Retrieved 15 October 2024.
- ^ a b Williams, Jason (20 June 2019). "Let's build a JavaScript Engine in Rust by Jason Williams - JSConf EU 2019". YouTube. JS Conf EU. Retrieved 15 October 2024.
- ^ "Contributors to boa-dev/boa". GitHub.
- ^ "Boa release v0.14". boajs.dev. 15 March 2022.
- ^ a b Munsters, Aäron. "BoaSpect" (PDF). Vrije Universiteit Brussel. Retrieved 15 October 2024.
- ^ "test262.fyi". test262.fyi. 6 September 2024. Archived from the original on 6 September 2024. Retrieved 6 September 2024.