Test build via Webpack
Let's make a test build. To do this, let's make a test file with an entry point:
alert('it works');
In the terminal, while in the root folder of your site, run the build:
npm run build
As a result, the dist folder should contain a main.js file containing the assembly. This is the default name Webpack gives to the bundle, since we did not specify our own name.
Perform a test build. Check that the built file appears.