What is the different between two way to install webpack?

[Samulwong]

Dear guys, I tried to init quasar project with following command
quasar init default#webpack1 quasar2nd
but shows error as follow:

pm WARN quasar-framework@0.14.7 requires a peer of quasar-extras@0.x but none is installed. You must install peer dependencies yourself.
npm WARN karma-sinon-chai@1.3.3 requires a peer of sinon@^2.1.0 || ^3.0.0 || ^4.0.0 but none is installed. You must install peer dependencies yourself.

When I run the quasar dev it compiles without any error or warning.
But the browser just comes with white blank screen and in Chrome dev tool I found an error as below:

caught SyntaxError: Unexpected token export
at Object.<anonymous> (app.js:648)
at webpack_require (app.js:556)
at fn (app.js:87)
at eval (eval at <anonymous> (app.js:672), <anonymous>:7:15)
at Object.<anonymous> (app.js:672)
at webpack_require (app.js:556)
at fn (app.js:87)
at Object.<anonymous> (app.js:587)
at webpack_require (app.js:556)
at app.js:579

After that I tried to init with default template and npm webpack separately, it works well…

Why it comes error ?
What is the different between “init with webpack” and install separately?