Bug: npm start script does not reload on save

Summary

The npm start cli script does not watch for changes and reload the browser as expected.

Expected result

When npm start script is running in the terminal:

• Editing a source file (.njk, .md, .js, .scss, etc) triggers a browser reload

Actual result

When npm start script is running in the terminal:

• Editing a source file (.njk, .md, .js, .scss, etc) does not trigger a browser reload

Additional Information

Might have been introduced in my work in #1249 :(