prefer-non-nulls

v1.36.0

style

effort: 2m

has IDE fix

has auto-fix

pro+

Suggests using .nonNulls instead of .whereType for filtering out nullable values.

Example

❌ Bad:

void fn() {
  Iterable<String?> a = [];

  // LINT: Prefer '.nonNulls' instead of '.whereType' for filtering out nullable values.
  a.whereType<String>();
}

✅ Good:

void fn() {
  Iterable<String?> a = [];

  a.nonNulls;
}