avoid-unassigned-local-variable

v1.36.0

warning

effort: 4m

pro+

Warns when a local variable is used but has not yet received a value.

Example

❌ Bad:

int? _value() {
  int? val;

  // LINT: This local variable is used but has not yet received a value.
  //  Try assigning a value or using 'null' directly.
  print(val);

  return val;
}

int? _another() {
  int? val;

  // LINT: This local variable is used but has not yet received a value.
  //  Try assigning a value or using 'null' directly.
  return val;
}

✅ Good:

int? correct() {
  int? val;

  val = 1;

  return val;
}

int? correct() {
  final val = 1;

  return val;
}

Related Rules

• avoid-unused-local-variable
• avoid-unnecessary-local-variable