HHVM 4.136 is released! HHVM 4.131–4.135 remain supported, as do the 4.102 and 4.128 LTS releases.

Highlights

Add IDE quickfix for missing interface methods.

The readonly feature is no longer considered unstable.

• The readonly modifier is now also visible to the reflection API via the isReadonly() or returnsReadonly() functions.

The [WriteHandle::truncate] method is added to HSL to truncate files.

Various APIs in HSL are now considered pure or controlled and no longer require the defaults capabilities.

The noreturn type now can be upcasted to dynamic.

Breaking Changes

Methods with a private final modifier are not supported any more. Use private instead.

The partial typing mode is removed. This includes both support for <?hh // partial in .php files, and for .hackpartial files.

Raise an error when a trait is <<__ConsistentConstruct>> but does not declare an explicit constructor.