4.6.3

• Don't attempt to append a child to a parentNode if the child is the parentNode. Fixes Issue #126.

4.6.2

• Optimize serialization of Objects to CSS strings to be about 5x faster (benchmark: https://esbench.com/bench/570daee0db965b9a009659f7)

• Rethink solution to #120. TL;DR: fresh instances, cached DOM. Long version:

  Re-invoking the constructor on a class was not a great idea. Babel's transpiled constructors
  (and basically anything else) re-assign to the prototype, which is slow and a fairly bad idea.
  Also, and more importantly, it was assigning this.base to null, completely ignoring the
  main reason for caching components (caching their generated DOM using the component itself
  as a cache key). This commit changes the behavior to discard the cached component instance
  itself, re-using only the base by copying it to a fresh instance. Best of both worlds!

4.6.1

• Fix for #122: don't assume Function.prototype exists, as it does not for Arrow Functions (thanks @LinusU!)

4.6.0

• Fix regression since 4.5.0 where key tracking for components would fail in some cases, causing components not to be recycled. Relates to #98 and the second issue noted in #120.
• Switch to a global/named symbol Symbol.for('preactattr') for the prop cache key (still falling back to __preactattr_).
• Address the state re-use issue noted in Issue #120 by manually re-invoking component constructors when re-using components from the recycler.

4.5.1

• Updated ESLint, announced preactjs.com website.

4.5.0

Bug Fixes

• Fix context being null/undefined when unset. It should be an empty object.
• Fix issue where ref (and key) were not being removed from props prior to being passed into component render (Issue #98)

Optimizations

• Drop unnecessary cloning of props/context
• Ship a more optimized default build by applying uglify-js without name mangling and with beautification (removes comments and applies dead code elimination)

4.4.0

Bug Fixes

• When reclaiming externally created elements (such as via dangerouslySetInnerHTML), copy their attributes into the prop cache so they are properly diffed on subsequent render (Issue #97)
• Fix cached unmount behavior: lifecycle events should be invoked for nested components, but only the top-level component should be physically removed from the DOM. The rest remain cached within that component's DOM + VDOM tree (Issue #94)

4.3.2

• Fix exception thrown when removing/unsetting dangerouslySetInnerHTML

4.3.1

• Fixed issue where setting the value prop for a <select> element could have no effect on initial render

4.3.0

• Fix an issue where invoking refs may be skipped during unmount (ex: re-render swaps high-order components)
• Fix a few cases where refs were invoked with the wrong value (Issue #87, thanks @chrisdavies)