Top sdk issues

VM: covariant check slower than is-check

area-vm

valueOf(key) for Maps like elementAt(index) for Iterables

area-language type-enhancement

Type inference fails to infer generic type arguments of closure default argument values

area-front-end

Confusing messages with await_only_futures, unnecessary_parenthesis and futures with ternary operator

P2 analyzer-linter area-analyzer type-bug

Pub is not able to handle out-of-date snapshots

P1 area-vm

dart2js: type 'UnknownJavaScriptObject' is not a subtype of type 'Change0<DocumentSnapshot0>'

web-dart2js

int.parse has limited precision, contradicting docs

area-library library-core type-documentation

Type inference of function return value

area-language

Difference in JS interop callback behaviour between DDC and dart2js

P2 area-web customer-flutter customer-google3 web-js-interop

Different inference with = null, = [null], = {1: null}

area-language