These changes are essentially the same as those introduced in
angular#45273, but they include backward compatibility
for applications that explicitly rely on the order in which microtasks are drained.
This is critically important for our code and other third-party code, which is
beyond our control, to work properly. If a microtask is scheduled within an event
listener to be executed "later", it should indeed be executed later and not synchronously,
as this would break the expected flow of code execution.
The simple code that reproduces the behavior that exists now:
```ts
Zone.current.fork({name: 'child'}).run(() => {
const div = document.createElement('div');
div.style.height = '200px';
div.style.width = '200px';
div.style.backgroundColor = 'red';
document.body.appendChild(div);
function listener() {
Promise.resolve().then(() => {
div.style.height = '400px';
});
}
div.addEventListener('fakeEvent', listener);
div.dispatchEvent(new Event('fakeEvent'));
console.log(div.getBoundingClientRect().height); // 400
});
```
The code above logs 400 as the height, but it should actually log 200 because the
height is updated in a microtask within the event listener.
When using Angular with microfrontend applications, especially when other apps might be
using React, zone.js can disrupt the classical order of operations. For example, when using a
`react-component/trigger`, it schedules a microtask within an event listener using
`Promise.resolve().then(...)` to determine whether the event needs to be re-dispatched.
The event is re-dispatched when the layout has changed, which is why a microtask is used.
With this change, we introduce a global configuration flag,
`__zone_symbol__enable_native_microtask_draining`, to allow consumers to enable
microtask draining within a browser microtask.
This flag is necessary to prevent any breaking changes resulting from this modification.
The previous attempt to address this issue caused a significant number of failures in g3.
Therefore, we are hiding that fix behind the configuration flag.
Closes angular#44446
Closes angular#55590
Closes angular#51328
(cherry picked from commit fc6a7eea68)
named as the values of the `TaskType` type.
The Closure Compiler used at Google has a property renaming optimization
that can change the property names when minifying code. Having the
correct type helps the TSJS team that develops a tool to identfy
property renaming issues directly in TypeScript.
Signed-off-by: Costin Sin <sin.costinrobert@gmail.com>
PR Close#51739
The `Timeout` object in Node.js has a `refresh` method, used to restart `setTimeout`/`setInterval` timers. Before this commit, `Timeout.refresh` was not handled, leading to memory leaks when using `fetch` in Node.js. This issue arose because `undici` (the Node.js fetch implementation) uses a refreshed `setTimeout` for cleanup operations.
For reference, see: 1dff4fd9b1/lib/util/timers.js (L45)Fixes: #56586
PR Close#56852
Since we aren't using clang anymore, we can remove the comments and the workarounds that were in place to prevent it from doing the wrong thing.
PR Close#55750
This commit adds `declare` to each interface in the `zone-impl` to
prevent renaming of any interface properties by compiler optimizations.
This would otherwise cause issues if multiple applications depend on ZoneJS and
compile the interface properties to different names.
PR Close#54966
While reading this is not a top-level side effect, it does _depend_ on a top-level side effect. Specifically, `node-env-setup.ts` set this value. Now that its side effect is moved into a function, we can't read it as the top-level of `zone-impl.ts` and need to wait until `__symbol__` is actually called outside of top-level scope.
PR Close#53443
This removes a name collision on `Zone` with the interface. Otherwise putting the `interface Zone {}` and `class Zone {}` in the same scope when the IIFE is removed will cause a conflict.
PR Close#53443
This drops global declarations from this file (as they will be limited to `zone.ts`. It also deletes the `/** @internal */` annotation on `AmbientZone` which is no longer necessary since it isn't in the `declare global` and deletes the global Zone declaration which is also unnecessary.
PR Close#53443
This is just a straight copy, no code is altered. The new `zone-impl.ts` file will contain the actual definitions exported directly without any global declarations or top-level side effects. The existing `zone.ts` will remain as an entry point with those globals and side-effects.
PR Close#53443
