The company initially laid out its plans to open-source
the technology last month in a talk at JSConf US
. Microsoft released the code under the MIT License at the ChakraCore GitHub repository
In a blog post
as the Microsoft Edge's Chakra engine, to embed in projects
, innovate on top of
and contribute back to
Microsoft also published a roadmap
for ChakraCore on its GitHub repository. With this release, developers can build ChakraCore on Windows 7 SP1 or above with Visual Studio 2013 or 2015 with C++ support installed. In the future, Microsoft will bring the technology to other platforms, starting with Linux, and will keep the roadmap updated with details and status updates as the project progresses.
Moving toward this cross-platform goal for Chakra, Microsoft separated out Chakra's just-in-time (JIT) compiler to provide a build configuration that builds just the interpreter and runtime.
"This smaller build target is what we will initially enable cross platform porting," Seth said. "We also invite developers to help us in the pursuit either by letting us know which other platforms they'd like to see ChakraCore supported on, or even by helping port it to the platform of their choice."
In addition to the talk at JSConf US last month, Microsoft also spelled out its ChakraCore strategy in a December blog post
written by Adalberto Foresti and Gaurav Seth, both managers on the Microsoft Edge browser team.
Moreover, the post explains that ChakraCore shares the same set of capabilities that are supported by Chakra in Microsoft Edge, with two key differences. First, it does not expose Chakra's private bindings to the browser or the Universal Windows Platform, both of which constrain it to a very specific use case. Second, instead of exposing the COM-based diagnostic APIs that are currently available in Chakra, ChakraCore will support a new set of modern diagnostic APIs, which will be platform-agnostic and could be standardized or made interoperable across different implementations in the long run. And as the company progresses on these new diagnostics APIs, Microsoft will make them available in Chakra as well.