extra_positional_arguments

Too many positional arguments: {0} expected, but {1} found.

The analyzer produces this diagnostic when a method or function invocation has more positional arguments than the method or function allows.

The following code produces this diagnostic because f defines 2 parameters but is invoked with 3 arguments:

void f(int a, int b) {}
void g() {
  f(1, 2, 3);
}

Remove the arguments that don't correspond to parameters:

void f(int a, int b) {}
void g() {
  f(1, 2);
}

Unless stated otherwise, the documentation on this site reflects Dart 3.8.0. Page last updated on 2025-05-08. View source or report an issue.