.NET Framework 3.0 was initially released November 21st, 2006. React.js was initially released May 29th, 2013.
There were 2381 days between differentiating between various binding types in WPF (which include one way, both OneWay and OneWayToSource) and React's release. There were 2378 days between React's release and today.
So it took React longer to copy one way bindings from WPF than it took this project to "copy" React.
Too bad you didn't make this comment on Thursday.