add defineEnumerableProperties helper
add defineEnumerableProperties helper

Skillupco/babel,samwgoldman/babel,babel/babel,kellyselden/babel,kellyselden/babel,drieks/babel,STRML/babel,Skillupco/babel,iamchenxin/babel,kpdecker/babel,fabiomcosta/babel,maurobringolf/babel,iamchenxin/babel,hzoo/babel,hulkish/babel,Skillupco/babel,zjmiller/babel,hzoo/babel,zenparsing/babel,iamstarkov/babel,mrtrizer/babel,claudiopro/babel,krasimir/babel,jchip/babel,STRML/babel,ccschneidr/babel,tikotzky/babel,kaicataldo/babel,zenparsing/babel,dustyjewett/babel-plugin-transform-es2015-modules-commonjs-ember,kellyselden/babel,lxe/babel,maurobringolf/babel,Industrial/babel,babel/babel,vadzim/babel,mrtrizer/babel,ameyms/babel,kaicataldo/babel,DmitrySoshnikov/babel,vadzim/babel,iamchenxin/babel,jhen0409/babel,hzoo/babel,jridgewell/babel,lxe/babel,garyjN7/babel,babel/babel,zjmiller/babel,chicoxyzzy/babel,existentialism/babel,hulkish/babel,DmitrySoshnikov/babel,dekelcohen/babel,bcoe/babel,CrocoDillon/babel,kellyselden/babel,Industrial/babel,kedromelon/babel,antn/babel,krasimir/babel,zertosh/babel,jridgewell/babel,claudiopro/babel,KunGha/babel,PolymerLabs/babel,kassens/babel,claudiopro/babel,vhf/babel,tikotzky/babel,chicoxyzzy/babel,guybedford/babel,samwgoldman/babel,kedromelon/babel,kaicataldo/babel,fabiomcosta/babel,AgentME/babel,kassens/babel,existentialism/babel,existentialism/babel,maurobringolf/babel,hulkish/babel,Skillupco/babel,benjamn/babel,rmacklin/babel,hzoo/babel,samwgoldman/babel,kaicataldo/babel,kedromelon/babel,chicoxyzzy/babel,KunGha/babel,guybedford/babel,jchip/babel,garyjN7/babel,babel/babel,hulkish/babel,AgentME/babel,jhen0409/babel,ccschneidr/babel,drieks/babel,bcoe/babel,ameyms/babel,chicoxyzzy/babel,CrocoDillon/babel,drieks/babel,shuhei/babel,PolymerLabs/babel,shuhei/babel,benjamn/babel,rmacklin/babel,shuhei/babel,kpdecker/babel,iamstarkov/babel,jridgewell/babel,zertosh/babel,antn/babel,jridgewell/babel,dekelcohen/babel,vhf/babel,PolymerLabs/babel,guybedford/babel