Usually, It's doing both of those things at the same time.
I work the majority of the time with React, Gatsby, GraphQL, Emotion, Styled Components, Nodejs just to name a few. I work primarily on the front end but would love to be able to build full-stack applications.
I have made a VS Code theme which is published on the VS Code Marketplace. My theme, raspberryCandy is a Neon/Pastel theme runs heavy on a neon electric aqua and a pastel pink/purple. Click the screenshot to check it out.