Fix `make js`
Fix `make js`

Summary: Totally forgot to test this rule, so {D6266813} broke CI

Reviewed By: mroch

Differential Revision: D6271871

fbshipit-source-id: 5b808d489be046c587cd8aaa72961ede260db230

facebook/flow,facebook/flow,jamesgpearce/flow,jamesgpearce/flow,ylu1317/flow,samwgoldman/flow,nmote/flow,TiddoLangerak/flow,claudiopro/flow,gabelevi/flow,TiddoLangerak/flow,facebook/flow,AgentME/flow,nmote/flow,gabelevi/flow,samwgoldman/flow,claudiopro/flow,JonathanUsername/flow,JonathanUsername/flow,JonathanUsername/flow,mroch/flow,nmote/flow,popham/flow,samwgoldman/flow,JonathanUsername/flow,samwgoldman/flow,gabelevi/flow,claudiopro/flow,gabelevi/flow,popham/flow,JonathanUsername/flow,jamesgpearce/flow,samwgoldman/flow,nmote/flow,claudiopro/flow,ylu1317/flow,popham/flow,mroch/flow,jamesgpearce/flow,jamesgpearce/flow,facebook/flow,samwgoldman/flow,AgentME/flow,popham/flow,facebook/flow,ylu1317/flow,mroch/flow,mroch/flow,popham/flow,popham/flow,AgentME/flow,claudiopro/flow,gabelevi/flow,nmote/flow,mroch/flow,jamesgpearce/flow,mroch/flow,TiddoLangerak/flow,gabelevi/flow,gabelevi/flow,AgentME/flow,facebook/flow,TiddoLangerak/flow,nmote/flow,samwgoldman/flow,facebook/flow,ylu1317/flow,JonathanUsername/flow,JonathanUsername/flow,jamesgpearce/flow,AgentME/flow,ylu1317/flow,mroch/flow,popham/flow,TiddoLangerak/flow,nmote/flow