§ hyperscript 0.0.4 Release

I'm pleased to announce the 0.0.4 release of hyperscript.

I would like to thank Deniz Akşimşek and Ben Pate for their assistance in getting this major release out the door by providing code, discussion and moral support. Thank you guys!

§ Changes

This release involved a massive refactor of the hyperscript runtime to fully support async transparency.
The runtime was moved back to being interpreted from being transpiled into javascript, which allows for this innovative language feature and that has set the stage for a number of interesting features in the future.

Most commands from the 0.0.3 release are still available, except for the ajax command, which has been replaced with the (much different) fetch command.

The ajax command may return as an add-on in a future release.

In addition to the big runtime change, a slew of new features were added:

§ Features

• event handlers now
  • can have event filters on them using a bracket syntax
  • can specify that an event happens elsewhere (that is, on an element not in the current element's hierarchy)
  • can specify if multiple concurrent instances of an event should be processed (defaults to no)
• There is a new def feature that allows you to define hyperscript functions
• There is a new worker feature that allows you to define WebWorkers in hyperscript (!!!)
• There is a new js feature that allows you to define javascript blocks within workers and hyperscript script tags
• Hyperscript now supports a pluggable grammar feature that allows you to define new hyperscript commands, features, and leaf & indirect expressions

§ Commands

• As mentioned above, the fetch replaces the ajax command
• The return and throw commands have been added to support hyperscript functions
• The repeat/for command has been added to support many different forms of iteration
• The js command has been added to allow for inline use of javascript within a hyperscript function or event handler
• The wait and repeat commands can now wait for events to occur, allowing for event driven control flow
• The 'hide' and 'show' commands can be used to hide and show elements using various strategies, and allow for plugging in additional strategies

§ Expressions

• support the no expression that returns true if the left hand side is null
• support is and is not as aliases for == and !=
• support the async expression to prevent the hyperscript runtime from syncing on a Promise returned by an expression

Enjoy!