avoid-unnecessary-local-variable

v1.31.0

warning

effort: 2m

teams+

Warns when a local variable is only used as an initializer of another local variable.

Such variables introduce unnecessary complexity and does not affect the meaning of the code.

Example

❌ Bad:

void fn() {
  var a = 1; // LINT: Avoid unnecessary local variables. Try using the value directly.
  var b = a;
  print(b);

  var c = 2;
  var d = c; // LINT: Avoid unnecessary local variables. Try using the value directly.
  print(c);
}

✅ Good:

void fn() {
  var b = 1;
  print(b);

  var c = 2;
  print(c);
}

Related Rules

• prefer-moving-to-variable
• move-variable-closer-to-its-usage
• use-existing-variable