unnecessary_new

Unnecessary new keyword.

AVOID new keyword to create instances.

BAD:

class A { A(); }
m(){
  final a = new A();
}

GOOD:

class A { A(); }
m(){
  final a = A();
}

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

linter:
  rules:
    - unnecessary_new

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

linter:
  rules:
    unnecessary_new: true

Unless stated otherwise, the documentation on this site reflects Dart 3.6.0. Page last updated on 2025-01-27. View source or report an issue.