Announcing Scala.js 1.0.1

Mar 10, 2020.

We are pleased to announce the release of Scala.js 1.0.1!

This is mostly a bugfix release, including a fix for a regression affecting extensions of the JDK (#3950).

Read on for more details.

Getting started

If you are new to Scala.js, head over to the tutorial.

If you need help with anything related to Scala.js, you may find our community on Gitter and on Stack Overflow.

Bug reports can be filed on GitHub.

Release notes

If upgrading from Scala.js 0.6.x, make sure to read the release notes of Scala.js 1.0.0` first, as it contains a host of important information, including breaking changes.

As a patch release, 1.0.1 is backward and forward binary compatible with 1.0.0. Libraries compiled with 1.0.0 can be used with 1.0.1 without change, and conversely. As a reminder, libraries compiled with 0.6.x cannot be used with Scala.js 1.x; they must be republished with 1.x first.


Upgrade to GCC v20200101

The Google Closure Compiler used internally by Scala.js for fullOptJS has been upgraded to v20200101.

Bug fixes

Among others, the following bugs have been fixed in 1.0.1:

  • #3950 Static forwarders are not generated for static nested objects
  • #3984 (-0.0).getClass() returns classOf[Integer] instead of classOf[Float]
  • #3983 With strict floats, someDouble.getClass() erroneously returns Float

You can find the full list on GitHub.