fix: explicitly set corejs version for @babel/preset-env#3696

Merged

haoqunjiang merged 2 commits intovuejs:devfrom

haoqunjiang:corejs-warning

Mar 26, 2019

Commits on Mar 23, 2019

fix: explicitly set corejs version for @babel/preset-env
haoqunjiang
committed

Commits on Mar 26, 2019

fix: requires @babel/preset-env >= 7.4.1
haoqunjiang
committed