library /*isNonNullableByDefault*/;
import self as self;
import "dart:core" as core;

typedef A<contravariant T extends core::num> = (T) → dynamic;
static field core::Map<(core::num) → dynamic, (core::num) → dynamic> a = <(core::num) → dynamic, (core::num) → dynamic>{};
static method main() → dynamic {}