return_without_value

The return value is missing after 'return'.

The analyzer produces this diagnostic when it finds a return statement without an expression in a function that declares a return type.

The following code produces this diagnostic because the function f is expected to return an int, but no value is being returned:

int f() {
  return;
}

Add an expression that computes the value to be returned:

int f() {
  return 0;
}

Unless stated otherwise, the documentation on this site reflects Dart 3.8.1. Page last updated on 2025-05-08. View source or report an issue.