import "package:expect/expect.dart";

Object? fn(Map<Object, Object> map, Object key) {}
const map = {'key1': 2, 'key2': 3, 'key3': 4};
const var1 = fn({'key': 'val'}, 'key');
const var2 = fn({'key': 2}, 'key');
const var3 = fn({'key': 2}, 'invalid');
const var4 = fn(map, 'key1');
const var5 = fn(map, 'key2');
const var6 = fn(map, 'key3');
const var7 = fn2();
int? fn2() {}
void main() {}