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prefer-dot-shorthands

added in: 4.2.0 style

Recommends using Dart's dot shorthand syntax when an explicit context type makes the type name redundant.

The rule checks enum values, static fields and getters, static methods, and named constructors in arguments and typed variable initializers. It also supports constant contexts and provides a quick fix.

note

Dot shorthands require a Dart language version of 3.10 or later. The rule is silent for files with an earlier language version.

Examples​

Bad:​

enum LogLevel { info }

class Point {
  const Point(this.x);
  const Point.origin() : x = 0;

  final int x;

  static const zero = Point.origin();
  static Point from(int x) => Point(x);
}

void acceptPoint(Point point) {}

void main() {
  LogLevel level = LogLevel.info; // LINT: enum value
  Point origin = Point.origin(); // LINT: named constructor
  acceptPoint(Point.zero); // LINT: static field
  acceptPoint(Point.from(1)); // LINT: static method
  const Point constant = Point.origin(); // LINT: constant context
}

Good:​

void main() {
  LogLevel level = .info;
  Point origin = .origin();
  acceptPoint(.zero);
  acceptPoint(.from(1));
  const Point constant = .origin();
}

The rule reports only cases with an explicit context type, such as a typed variable initializer or a matching parameter type. It skips inferred variables, explicit const constructor calls, and calls with explicit type arguments.

Additional resources: