Code Style. Dart

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The page is available only when the Dart plugin is installed and enabled on the Settings/Preferences | Plugins page as described in Managing plugins.

In IntelliJ IDEA, Dart code is formatted using the dartfmt tool that has become an industry standard and is a part of the Dart SDK, see also the dart_style package documentation. The only configurable option is line length. By default, lines are 80 characters long. You can specify a custom value in the Line length field.

Learn more from Frequently Asked Questions about Dart Formatter.