avoid-unnecessary-factory

v1.38.0

style

effort: 3m

pro+

Suggests converting a factory constructor to a regular constructor.

Example

❌ Bad:

class Point {
  final double x;
  final double y;

  Point._(this.x, this.y);

  // LINT: This factory constructor can be a regular constructor.
  //  Consider converting it to a regular constructor.
  factory Point(double x, double y) {
    return Point._(x, y);
  }

  // LINT: This factory constructor can be a regular constructor.
  //  Consider converting it to a regular constructor.
  factory Point.atOrigin() => Point._(0, 0);
}

✅ Good:

class Point {
  final double x;
  final double y;

  Point(this.x, this.y);

  Point.atOrigin(): x = 0, y = 0;
}

Related Rules

• avoid-unnecessary-constructor
• avoid-duplicate-factories