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prefer-correct-identifier-length

added in: 1.6.0
⚙️
Pro+

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 empty) 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(length);
}