avoid_types_on_closure_parameters

Stable
Fix available

Avoid annotating types for function expression parameters.

Details

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AVOID annotating types for function expression parameters.

Annotating types for function expression parameters is usually unnecessary because the parameter types can almost always be inferred from the context, thus making the practice redundant.

BAD:

dart
var names = people.map((Person person) => person.name);

GOOD:

dart
var names = people.map((person) => person.name);

Incompatible rules

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The avoid_types_on_closure_parameters rule is incompatible with the following rules:

Enable

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

analysis_options.yaml
yaml
linter:
  rules:
    - avoid_types_on_closure_parameters

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

analysis_options.yaml
yaml
linter:
  rules:
    avoid_types_on_closure_parameters: true