PureScript 是个小巧而强大的静态类型语言，可以编译成 JavaScript。purescript 主要是由 Haskell 和 PureScript 编写的。

v0.10.0-rc.1 更新内容如下：

主要变化：

The new functional dependencies feature fixes type inference in some cases involving multi-parameter type classes. However, due to a bug in the compiler, some of those expressions were previously type checking where they should not have. As a result, it is necessary to add functional dependencies to some classes in order to make previous code type-check in some cases. Known examples are:

• MonadEff and MonadAff

• MonadState, MonadReader, and the rest of the MTL-style classes in transformers

These libraries will be updated before the final release of 0.10.*, but you might experience some issues in the meantime.

新功能：

Data.Newtype Deriving

It is now possible to derive the Newtype class for any data declaration which is a newtype, using the existing deriving instance syntax:

newtype Test = Test String

derive instance newtypeTest :: Newtype Test _

Note that the second type argument should be specified as a wildcard, and will be inferred.

完整版更新内容请查看：https://github.com/purescript/purescript/releases

下载地址：

• linux64.sha

• linux64.tar.gz

• macos.sha

• macos.tar.gz

• Source code (zip)

• Source code (tar.gz)

新闻来源：PureScript v0.10.0 rc1 发布，静态类型语言