How to get webpack js file correctly in django?

Question

I think my problem is more or less a simple question, but I'm not still accustomed to using webpack and so on, So your advice will be helpful to me. (I'm using Django on backend and React on frontend)

Hierarchy of folder

Cebula4
    -  back
         - settings.py
         - manage.py
    -  front
         - static
             - bundles
                  - MainPage.js (webpacked)

Settings.py

...

STATIC_URL = '/static/'
STATICFILES_DIRS=[
    os.path.join(BASE_DIR,'static'),
]

STATIC_ROOT=os.path.join(BASE_DIR,'staticfiles')

...

How can I get this webpack file(MainPage.js) in output folder like C:\Users\1Sun\Cebula4\front\static\bundles\MainPage.js by local web_url like http://127.0.0.1:8000/static/bundles...?