npm i
npm run build
npm test
# output has wrong position in with-babel version
no-babel position:
{ source: 'webpack:///src/no-babel/foo/bar.js',
line: 2,
column: 14,
name: null }
with-babel position:
{ source: 'webpack:///src/with-babel/index.js',
line: 5,
column: 6,
name: 'doSmth' }