unhandledrejection event fires after Zone handles Bluebird rejection #31701
Description
Zone.js patched version from #1114 / #1119 (https://github.com/JiaLiPassion/zone.js/tree/bluebird-then-release)
Bluebird 3.5.0
Chrome 67
I'm not sure if this is a usage problem or a bug, but I suspect the latter.
The unhandledrejection event is triggered for Bluebird Promise rejections, even if a Zone's onHandleError callback has handled the error. This doesn't happen with ZoneAwarePromise.
Repro: https://jsfiddle.net/8cyj7rnL/16/
Comment out the Bluebird patch on line 10 to see the difference.
<html>
<head>
<script src="https://unpkg.com/bluebird"></script>
<script src="https://rawgit.com/JiaLiPassion/zone.js/bluebird-then-release/dist/zone.js"></script>
<script src="https://rawgit.com/JiaLiPassion/zone.js/bluebird-then-release/dist/zone-bluebird.js"></script>
<script>
var Bluebird = window.P;
Zone[Zone["__symbol__"]("bluebird")](Bluebird);
window.addEventListener("unhandledrejection", (e) => {
console.log("unhandled rejection (only called with Bluebird patch)", e.detail.reason.message);
});
Zone.current.fork({
name: "test zone",
onHandleError(a, b, c, err) {
console.log("Zone handled err", err.message);
}
}).run(() => {
return Promise.reject(new Error("error in promise rejection"));
})
</script>
</head>
</html>