Chakra (JavaScript engine)
Chakra was a free and open-source JavaScript engine developed by Microsoft for its Microsoft Edge Legacy web browser. It is a fork of the same-named JScript engine used in Internet Explorer. As with the EdgeHTML browser engine, the declared intention was that it would reflect the "Living Web".[2] The core components of Chakra were open-sourced as ChakraCore. In 2021, Microsoft terminated support for the engine, citing its transition to a Chromium-based engine for Edge. Support has been transferred to the community, where it remains inactive.[3]
Standards support
[edit ]Chakra supports ECMAScript 5.1 with partial support for ECMAScript 2015.[4]
Open sourcing
[edit ]Following an initial announcement on December 5, 2015,[5] [6] Microsoft open sourced the Chakra engine as ChakraCore, including all the key components of the JavaScript engine powering Microsoft Edge [Legacy] on their GitHub page under the MIT License on January 13, 2016.[6] [7] ChakraCore is essentially the same as the Chakra engine that powers the Microsoft Edge Legacy browser, but with platform-agnostic bindings, i.e., without the specific interfaces utilized within the Universal Windows App platform.
Microsoft has also created a project on GitHub that allows Node.js to use ChakraCore as its JavaScript engine instead of V8.[8]
References
[edit ]- ^ "Releases · microsoft/ChakraCore · GitHub". GitHub ChakraCore repository. Retrieved 2021年02月28日.
- ^ "Targeting Edge vs. Legacy Engines in JsRT APIs" . Retrieved 10 September 2015.
- ^ "org/Release 1.12 plan.md at master · chakra-core/org". GitHub. Retrieved 2023年11月17日.
- ^ "Microsoft Edge Platform Status". Microsoft.com. Retrieved 10 September 2015.[permanent dead link ]
- ^ "Microsoft Edge's JavaScript engine to go open-source". Microsoft. 2015年12月05日. Retrieved December 8, 2015.
- ^ a b Microsoft open sources Edge web browser's JavaScript engine, plans port to Linux on zdnet.com by Steven J. Vaughan-Nichols (on January 13, 2016)
- ^ ChakraCore on github.com
- ^ Node.js enabled for ChakraCore on github.com
External links
[edit ]- ChakraCore on GitHub