Maintaining consistent code formatting across a team becomes challenging without automated tools, leading to messy diffs and style debates in code reviews. With over 12 years of React development experience since 2014 and as the creator of CoreUI, I’ve configured Prettier for countless production projects. Prettier is an opinionated code formatter that automatically formats JavaScript, JSX, CSS, and other files on save or commit. The setup involves installing Prettier, creating a configuration file, and optionally integrating it with ESLint to avoid rule conflicts.