The `new array.constructor()` pattern is occasionally used in JS
(presumably, to get the array subtype if one is available). GopherJS in
particular does this. This fixes DDC's generic `JSArray<T>` to support
this pattern, for all values of T. This also makes JSArray work like
all other "native" types in DDC, where the "constructor" property
is the JS constructor for that native type.
Change-Id: I5270bd648d3d60cf07b8548fcd8c9b9d1a3018d4
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/99940
Auto-Submit: Jenny Messerly <jmesserly@google.com>
Reviewed-by: Nicholas Shahan <nshahan@google.com>
Commit-Queue: Jenny Messerly <jmesserly@google.com>
This type is used for JS instanceof checks. dart.dynamic doesn't work for that. In general, this fall back looks dodgy (with or without this change), but this unblocks an internal user.
Change-Id: Id7401bbbef1aeddd93f40932b84f1928b4238edb
Reviewed-on: https://dart-review.googlesource.com/28121
Reviewed-by: Leaf Petersen <leafp@google.com>
Reviewed-by: Jacob Richman <jacobr@google.com>
Jenny Messerly