In Dart / IntelliJ Idea how to make it an error when you miss a return?

Question

In Dart / IntelliJ Idea how to make it an error (not a simple warning) when you miss a return?

If I forget to add a return, it's a simple warning, it's very easy to miss, and this makes me waste a lot of time.

warning: This function declares a return type of 'RichText', but doesn't end with a return statement.

Also, if the function has a return parameter, I don't see how it's not an error simply not returning anything (at least in Flutter).

Answer 1

Grab a copy of the default analysis_options.yaml from here . Put it in the top folder of your flutter project (next to pubspec.yaml ). Change line 31 to:

    missing_return: error

Beware of this issue .