Expand Node types definitions for append/replace/removeChild and insertBefore.
Expand Node types definitions for append/replace/removeChild and insertBefore.

Summary:
Ran into this while exploring adding flow to a project. Shouldn't break any existing code AFAIK.
Closes https://github.com/facebook/flow/pull/2517

Differential Revision: D3924403

Pulled By: mroch

fbshipit-source-id: 8b57b9d59e0fa11d4abfd20a125e596738019a5d

nmote/flow,jamesgpearce/flow,gabelevi/flow,gabro/flow,fletcherw/flow,samwgoldman/flow,ylu1317/flow,mroch/flow,ylu1317/flow,jamesgpearce/flow,popham/flow,jamesgpearce/flow,claudiopro/flow,ylu1317/flow,AprilArcus/flow,jamesgpearce/flow,AgentME/flow,jamesgpearce/flow,facebook/flow,TiddoLangerak/flow,AprilArcus/flow,claudiopro/flow,gabro/flow,jgrund/flow,claudiopro/flow,popham/flow,jgrund/flow,gabro/flow,gabelevi/flow,samwgoldman/flow,AgentME/flow,samwgoldman/flow,MichaelDeBoey/flow,nmote/flow,AprilArcus/flow,ForbesLindesay/flow,JonathanUsername/flow,mroch/flow,ForbesLindesay/flow,jgrund/flow,AprilArcus/flow,ForbesLindesay/flow,mroch/flow,popham/flow,chenglou/flow,JonathanUsername/flow,TiddoLangerak/flow,facebook/flow,gabro/flow,nmote/flow,jgrund/flow,JonathanUsername/flow,chenglou/flow,ylu1317/flow,jamesgpearce/flow,mroch/flow,ForbesLindesay/flow,TiddoLangerak/flow,mroch/flow,AgentME/flow,popham/flow,fletcherw/flow,popham/flow,AprilArcus/flow,nmote/flow,ylu1317/flow,claudiopro/flow,TiddoLangerak/flow,facebook/flow,JonathanUsername/flow,facebook/flow,fletcherw/flow,JonathanUsername/flow,AgentME/flow,gabelevi/flow,fletcherw/flow,AgentME/flow,JonathanUsername/flow,chenglou/flow,TiddoLangerak/flow,gabro/flow,samwgoldman/flow,jamesgpearce/flow,MichaelDeBoey/flow,facebook/flow,gabelevi/flow,popham/flow,jgrund/flow,gabelevi/flow,AprilArcus/flow,ForbesLindesay/flow,chenglou/flow,jgrund/flow,mroch/flow,chenglou/flow,gabro/flow,facebook/flow,gabelevi/flow,samwgoldman/flow,samwgoldman/flow,ForbesLindesay/flow,nmote/flow,MichaelDeBoey/flow,popham/flow,fletcherw/flow,MichaelDeBoey/flow,claudiopro/flow,samwgoldman/flow,fletcherw/flow,mroch/flow,nmote/flow,JonathanUsername/flow,MichaelDeBoey/flow,nmote/flow,facebook/flow,gabelevi/flow,chenglou/flow