What youre referring to is that the early FB IOS app essentially wrapped a webview in order to display its stream, but the webview performance at the time was atrocious and they quickly abandoned it for natively build components.
More recently(2013), post Instagram acquisition, Facebook developed a virtual dom framework named react and its currently used in several places of their web app.
Similarly with Angular which was introduced ~5 years ago, they decided that for the new rewrite it makes sense to use a virtual-dom like technology at the render level. The change is evolutionary.
FWIW Polymer is an effort by a completely different team and at this point is independent of Angular.
What youre referring to is that the early FB IOS app essentially wrapped a webview in order to display its stream, but the webview performance at the time was atrocious and they quickly abandoned it for natively build components. More recently(2013), post Instagram acquisition, Facebook developed a virtual dom framework named react and its currently used in several places of their web app.
Similarly with Angular which was introduced ~5 years ago, they decided that for the new rewrite it makes sense to use a virtual-dom like technology at the render level. The change is evolutionary.
FWIW Polymer is an effort by a completely different team and at this point is independent of Angular.