Hey everyone,

CoffeeScript 2.0.0-beta1 is released! Install it via:npm install coffeescript@next

Yes,coffeescript, notcoffee-script. I hope to release the 2.x versions oncoffee-script once we determine that it’s safe to do so. More on thathere.

Since thelast update and the 2.0.0-alpha1 release, as of 2017-04-14 the following has been merged into thejashkenas/coffeescript2 branch:

• Destructuring is now output using ES2015 syntax, thanks to@connec and@GeoffreyBooth.
• Literate CoffeeScript now parses Markdown much better, thanks to@GeoffreyBooth.
• get andset keywords now throw an error, preservingthe option of supporting them as keywords in the future; thanks to@GeoffreyBooth.
• The v2 docs discuss our design decisions regardinglet/const andget/set, as well as addresswhy CoffeeScript in an ES2015+ world, thanks to@mrmowgli and@GeoffreyBooth.
• Severallexingbugs and oneparsing bug were fixed by@helixbass and@GeoffreyBooth.

As of February, we had accomplished:

• Classes, including idiomatic output for both theclass andsuper keywords, thanks to@connec.
• Redesigned docs for v2, thanks to@GeoffreyBooth.
• Refactored Cake tasks adding watch modes to building the compiler, thanks to@GeoffreyBooth.

As of December, we had accomplished:

• Tagged template literals, thanks to@greghuc.
• Interpolated strings are now output as template literals (ES backtick syntax), thanks to@greghuc.
• Triple-backtick operator and escaped backticks in embedded JavaScript, thanks to@GeoffreyBooth.
• The browser tests work again, thanks to@GeoffreyBooth.

And as of November, we had accomplished:

• Async/await, thanks to@GabrielRatener.
• Arrow functions, function default parameters and function rest parameters, thanks to@GeoffreyBooth.
• Splats in arrays and function calls are output using ES2015 syntax, thanks to@connec.
• Computed properties are output using ES2015 syntax, thanks to@connec.
• Octal and binary literals are output as-is, thanks to@JimPanic.
• CoffeeScript is stricter about whitespace thanks to@eelco, andLiterate CoffeeScript now understands Markdown thanks to@billymoon.
• Support forES2015for…of isimplemented, thanks to@atg.
• Bugs were fixed by@alangpierce,@shreeve,@JimPanic,@GeoffreyBooth and others. Also thanks for feedback from@lydell and@jashkenas.

This wraps upall the features we had planned to be in scope for CoffeeScript 2! Hence this is the first beta release. The plan from here to 2.0.0 is to fix any bugs that people find, and release 2.0.0 out of beta as soon as we feel confident that it is stable.

That doesn’t mean development needs to stop! There’s still time for new features, both before and after 2.0.0 is released; though if your new feature is a breaking change, it should come before. Foremost among the upcoming features in progress isdestructuring object spreads.

Please try 2.0.0-beta1 in your projects! And let us know if you encounter any issues, after first reviewing thebreaking changes. If you think there’s a bug, pleaseopen an issue with “[CS2]“ in the title. Pleasedon’t comment bug reports on this thread. Thanks!