New feature: CSS Typed Object Model (CSS Typed OM)

[branneman]

Specification: https://drafts.css-houdini.org/css-typed-om/
Polyfill: https://github.com/jonathantneal/css-typed-om

Browser Support:

• Chrome 66: Partial support

I found out about this feature through the Google Developers article Working with the new CSS Typed Object Model.

[woutervanvliet]

This has now landed in Chrome 66, would be nice to see it on caniuse.com

Until then, we have: https://ishoudinireadyyet.com/ (https://github.com/surma/ishoudinireadyyet.com)

[Schweinepriester]

Safari TP 145 https://webkit.org/blog/12629/release-notes-for-safari-technology-preview-145/:

Added CSSOM support (r292045)

=>

Implemented units for CSS Typed OM (r292150)

[Schweinepriester]

https://webkit.org/blog/13686/release-notes-for-safari-technology-preview-161/:

CSS Typed OM

• Enabled CSS Typed OM (258269@main)
• Allowed setting custom identifiers via the CSS Typed OM API (257859@main)
• Made transition-duration property not allow negative values (258295@main)
• Made sure the z-index property is able to be set to -3.14 (258265@main)
• Made sure column-count value gets clamped to [1, inf] (258218@main)
• Made sure orphans and widows value gets clamped to [1, inf] (258243@main)
• Made StylePropertyMap return CSS values exactly as they were set (257815@main)
• Made StylePropertyMap.set() wrap a value in a calc() if the value is outside the allowed range (257485@main)
• Made StylePropertyMap.set() throw when trying to set a number for a property which doesn't allow it (258242@main)