Files outside src/ aren't compiled with Babel

Created by: debugpoint136

Problem: Using ES6 feature like template string or fat arrow function notation, in any helper JS functions to fetch data and pass it to React components, npm start works fine but npm run build fails

Error:-

static/js/main.edbb179d.js from UglifyJs
SyntaxError: Unexpected token: operator (>) [./api/consensus_view-api.js:65,0]

static/js/main.d10c594a.js from UglifyJs
SyntaxError: Unexpected character '`' [./api/consensus_view-api.js:25,0]

node - 6.10.0 npm - 3.10.10 OS - MacOS El Capitan react-scripts: 0.9.3