Chakra (JavaScript engine)

Last updated
Chakra
Developer(s) Microsoft
Stable release
1.11.24 / December 8, 2020;4 years ago (2020-12-08) [1]
Repository
Written in C++
Operating system Windows, macOS, Linux
Platform IA-32, x86-64, ARM, ARM64
Type JavaScript engine
License MIT License
Website github.com/chakra-core/ChakraCore   OOjs UI icon edit-ltr-progressive.svg

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. Like 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]

Contents

Standards support

Chakra supports ECMAScript 5.1 with partial support for ECMAScript 2015. [4]

Open sourcing

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

  1. "Releases · microsoft/ChakraCore · GitHub". GitHub ChakraCore repository. Retrieved 2021-02-28.
  2. "Targeting Edge vs. Legacy Engines in JsRT APIs" . Retrieved 10 September 2015.
  3. "org/Release 1.12 plan.md at master · chakra-core/org". GitHub. Retrieved 2023-11-17.
  4. "Microsoft Edge Platform Status". Microsoft.com. Retrieved 10 September 2015.[ permanent dead link ]
  5. "Microsoft Edge's JavaScript engine to go open-source". Microsoft. 2015-12-05. Retrieved December 8, 2015.
  6. 1 2 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)
  7. ChakraCore on github.com
  8. Node.js enabled for ChakraCore on github.com