library;
import self as self;
import "dart:core" as core;

class Square extends core::Object /*hasConstConstructor*/  {
  final field (core::String) →? void logFunction;
  final field core::double length;
  const constructor •(core::double length, [has-declared-initializer (core::String) →? void logFunction = null]) → self::Square
    : self::Square::length = length, self::Square::logFunction = logFunction, super core::Object::•()
    ;
  method _log(core::String toLog) → void
    ;
  get area() → core::double
    ;
}
static field core::String log;
static method logger(core::String s) → void
  ;
static method main() → dynamic
  ;
static method expect(dynamic expected, dynamic actual) → dynamic
  ;