Normalize presets before merging config with others. (#9034)
Normalize presets before merging config with others. (#9034)


hzoo/babel,jridgewell/babel,Skillupco/babel,jridgewell/babel,babel/babel,kaicataldo/babel,hzoo/babel,babel/babel,kaicataldo/babel,Skillupco/babel,babel/babel,kaicataldo/babel,Skillupco/babel,babel/babel,kaicataldo/babel,Skillupco/babel,jridgewell/babel,jridgewell/babel,hzoo/babel,hzoo/babel