Unexpected token: operator (>) from UglifyJs
I have 2 Vue-Cli webpack projects (ClientApp and Lib). Lib is my components library (shared with other projects) Problem When I build my project ClientApp npm run build , I have the following error: ERROR in static/js/app.d08a24ce0e8d0438ce68.js from UglifyJs Unexpected token: operator (>) [C:/.../Lib/src/tools/escape-key.js:3,0][static/js/app.d08a24ce0e8d0438ce68.js:17468,38] Questions It seems like the error comes from an arrow function in the file escape-key.js . This is ES6 syntax and UglifyJS can't parse this. Shouldn't Babel go first, before Uglify? Note that is works well with *.vue