avoid_annotating_with_dynamic

Avoid annotating with dynamic when not required.

AVOID annotating with dynamic when not required.

As dynamic is the assumed return value of a function or method, it is usually not necessary to annotate it.

BAD:

dynamic lookUpOrDefault(String name, Map map, dynamic defaultValue) {
  var value = map[name];
  if (value != null) return value;
  return defaultValue;
}

GOOD:

lookUpOrDefault(String name, Map map, defaultValue) {
  var value = map[name];
  if (value != null) return value;
  return defaultValue;
}

To enable the avoid_annotating_with_dynamic rule, add avoid_annotating_with_dynamic under linter > rules in your analysis_options.yaml file:

linter:
  rules:
    - avoid_annotating_with_dynamic

If you're instead using the YAML map syntax to configure linter rules, add avoid_annotating_with_dynamic: true under linter > rules:

linter:
  rules:
    avoid_annotating_with_dynamic: true

Unless stated otherwise, the documentation on this site reflects Dart 3.7.0. Page last updated on 2025-01-27. View source or report an issue.