Atom users can simply install the prettier-atom package and use
Ctrl+Alt+F to format a file (or format on save if enabled).
Alternatively, you can use one the packages below, which behave similarly to prettier-atom but have a focus on minimalism.
Emacs users should see this repository for on-demand formatting.
Visual Studio Code
prettier-vscode can be installed using the extension sidebar. Search for
Prettier - Code formatter. It can also be installed using
ext install prettier-vscode in the command palette. Check its repository for configuration and shortcuts.
If you'd like to toggle the formatter on and off, install
Sublime Text support is available through Package Control and the JsPrettier plug-in.
JetBrains WebStorm, PHPStorm, PyCharm...
See the WebStorm setup guide.