prefer-correct-identifier-length

added in: 1.6.0

style

⚙️

The rule checks the length of variable names in classes, functions, extensions, mixins, and also checks the value of enum.

⚙️ Config

Set min-identifier-length (default is 3) to configure the minimum allowed identifier length.

Set max-identifier-length (default is 300) to configure the maximum allowed identifier length.

Set exceptions (default is none) to ignore specific identifier names.

dart_code_metrics:
  ...
  rules:
    ...
    - prefer-correct-identifier-length:
        exceptions: [ 'a' ]
        max-identifier-length: 30
        min-identifier-length: 4

Example

❌ Bad:

var x = 0; // length equals 1
var multiplatformConfigurationPoint = 0; // length equals 31

final declarations = <({int f, String s})>{}; // LINT

final value = switch (declarations) {
  Set s => s.single, // LINT
  _ => 0,
};

if (declarations case Set(length: final l)) {  // LINT
  print(l);
}

✅ Good:

var property = 0; // length equals 8
var multiplatformConfiguration = 0; // length equals 26

final declarations = <({int first, String second})>{};

final value = switch (declarations) {
  Set someSet => someSet.single,
  _ => 0,
};

if (declarations case Set(: final length)) {
  print(l);
}