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avoid-never-passed-parameters

v1.31.0
warning
effort: 2m
teams+

Warns when a private function or method has an optional parameter that never gets a value.

Never passed parameters are usually a sign of incomplete implementation or a refactoring leftover. Consider either passing a value to such parameters or removing them from the declaration.

note

This rule handles only private declarations. For public functions and methods use the check-parameters command.

Example​

❌ Bad:

class Some {
  void work() {
    _fn();
  }

  // LINT: This parameter never gets a value. Try removing it.
  void _fn([String? nullable]) {
    if (nullable == null) {
      // handle nullable case
    } else {
      // handle regular case
    }
  }
}

✅ Good:

class Some {
  void work() {
    _fn();
  }

  void _fn() {
    // handle regular case
  }
}
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