avoid-unnecessary-late-fields

v1.31.0

warning

effort: 2m

has auto-fix

teams+

Warns when a late final field declaration is assigned in all constructors.

The late keyword has no effect in such cases and can be simply removed.

Example

❌ Bad:

class SomeClass {
  // LINT: This 'late' keyword is unnecessary since the field is assigned in all constructors.
  //  Try removing the keyword.
  late final String clientId;

  SomeClass({required this.clientId});
}

class SomeOtherClass {
  // LINT: This 'late' keyword is unnecessary since the field is assigned in all constructors.
  //  Try removing the keyword.
  late final int anotherField;

  SomeOtherClass() : anotherField = 1;
}

✅ Good:

class SomeClass {
  final String clientId;

  SomeClass({required this.clientId});
}

class SomeOtherClass {
  late final int anotherField;

  SomeOtherClass();
}

Related Rules

• avoid-unnecessary-local-late
• avoid-unassigned-late-fields
• avoid-late-keyword