[next] Revert to use ecma 5 in uglifyOptions#4234

Merged

Timer merged 3 commits intofacebook:nextfrom danielberndt:patch-1

Apr 2, 2018

+9-1

Commits on Mar 31, 2018

Revert to use ecma 5 in uglifyOptions
danielberndt
authored

Commits on Apr 1, 2018

remove explicit ecma version from uglifyOptions settings
danielberndt
authored

Commits on Apr 2, 2018

be explicit of where we use ecma: 8 and ecma: 5
danielberndt
authored