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

class Trace extends core::Object {
  field core::List<self::Frame> frames = <dynamic>[];
  synthetic constructor •() → void
    : super core::Object::•()
    ;
}
class Frame extends core::Object {
  field core::String location = "";
  synthetic constructor •() → void
    : super core::Object::•()
    ;
}
static method main() → dynamic {
  core::List<self::Trace> traces = <dynamic>[];
  dynamic longest = traces.map((dynamic trace) → dynamic {
    return trace.frames.map((dynamic frame) → dynamic => frame.location.length).fold(0, math::max);
  }).fold(0, math::max);
}