Is this a competitor to React Native? RN seems to be the ideal: truly native components but a JS programming model.
There are actually several. NativeScript supports Angular, vanillajs, and recently VueJS. There is also a bridge to use VueJS inside of reactnative itself. There are many other libraries that claim to be "native" but are actually only "native look and feel" (meaning HTML+CSS+Cordova/Phonegap, not native components).