Prettier
Prettier is a tool to format .js, .ts, .css, .less, .scss, .vue, and .json code. With WebStorm, you can format selected code fragments as well as entire files or directories using the Reformat with Prettier action. WebStorm adds this action as soon as you install Prettier as a dependency in your project or globally on your computer.
To install Prettier
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In the embedded Terminal (Alt+F12), type one of the following commands:
npm install --save-dev --save-exact prettiernpm install --global prettier
Learn more about installation modes from the Prettier official website.
To configure Prettier in WebStorm
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In the Settings/Preferences dialog (Ctrl+Alt+S), go to Languages and Frameworks | JavaScript | Prettier.
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On the Prettier page, that opens, specify the path to the prettier package and choose the Node.js interpreter to use. This can be a local Node.js interpreter or a Node.js on Windows Subsystem for Linux.
To reformat code with Prettier
Select the code fragment to reformat in the editor or select a file or a folder in the Project tool window and press Ctrl+Shift+Alt+P or select Reformat with Prettier from the context menu.
Alternatively, press Ctrl+Shift+A and select Reformat with Prettier from the Find Action list.
WebStorm can apply the key code style rules from the Prettier's configuration to the WebStorm Code Style settings so that generated code (for example, after refactoring or quick-fix) and the code that is already processed with Prettier are formatted consistently.
To apply Prettier code style rules
In the project where Prettier is enabled, open package.json and click Yes in the pane at the top of the tab.
To re-apply the Prettier code style (after you've clicked No in the pane or modified the code style), press Ctrl+Shift+A and select Apply Prettier Code Style Rules from the Find Action list.