refactor(core): separate LView-level and TView-level destroy hooks by pkozlowski-opensource · Pull Request #49158 · angular/angular

pkozlowski-opensource · 2023-02-22T11:15:00Z

No description provided.

packages/core/src/render3/interfaces/view.ts

packages/core/src/render3/node_manipulation.ts

packages/core/src/linker/destroy_ref.ts

Harpush · 2023-02-24T15:19:40Z

@pkozlowski-opensource Does this allow for destroy logic in inject based functions without hacks (inject(ChangeDetectorRef) as ViewRef)? If it is please make it public API.

gmfun · 2023-02-25T08:04:24Z

@pkozlowski-opensource Does this allow for destroy logic in inject based functions without hacks (inject(ChangeDetectorRef) as ViewRef)? If it is please make it public API.

inject(DestroyRef).onDestroy is available now as per the tests

packages/core/src/linker/destroy_ref.ts

atscott

reviewed-for: public-api, circular-deps

packages/core/src/linker/destroy_ref.ts

packages/core/src/render3/instructions/shared.ts

packages/core/src/render3/interfaces/view.ts

jelbourn · 2023-02-28T16:45:07Z

packages/core/src/render3/interfaces/view.ts

If would be convenient to mention here how the user defines these callsbacks. This would be useful for newcomers to this codebase.

packages/core/src/render3/node_manipulation.ts

packages/core/test/acceptance/destroy_ref_spec.ts

packages/core/src/di/r3_injector.ts

dylhunn

Looks very nice.
reviewed-for: public-api, fw-core

DestroyRef represents a concept of lifecycle scope where destroy callbacks can be registered. Such callbacks are automatically executed when a given scope ends it lifecycle. In practice the most common lifecycle scopes would be represented by: - a component or en embedded view; - instance of `EnvironnementInjector`.

alxhub

Reviewed-for: size-tracking

AndrewKushnir

FYI, just a minor (non-blocking) comment, which can be addressed in a followup PR (if needed). I will proceed with merging this PR.

AndrewKushnir · 2023-02-28T19:41:24Z

packages/core/src/linker/destroy_ref.ts

+ * directive is destroyed. Otherwise the callbacks run when a corresponding injector is destroyed.
+ */


Suggested change

* directive is destroyed. Otherwise the callbacks run when a corresponding injector is destroyed.

*/

* directive is destroyed. Otherwise the callbacks run when a corresponding injector is destroyed.

*

* @publicApi

*/

Do we want "Developer Preview" label here as well?

Actually, I'm not sure :-) I do think that we might want to have this API regardless of other dev-preview work where it is going to be used primarily.

But yep, this is good discussion to be had! I would appreciate if we could get it in (was trying to make it green for a while...) and decide on the API flag in a separate PR.

Thnx for checking @AndrewKushnir !

AndrewKushnir · 2023-02-28T19:52:12Z

This PR was merged into the repository by commit 0f5c800.

ajafff · 2023-03-17T08:13:43Z

goldens/public-api/core/index.md


+// @public
+export abstract class DestroyRef {
+    abstract onDestroy(callback: () => void): void;


how would I unregister the callback to avoid leaking memory in long-lived DestroyRefs?

We are going to add API for this in a follow-up PR

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pkozlowski-opensource added the area: core Issues related to the framework runtime label Feb 22, 2023

ngbot bot added this to the Backlog milestone Feb 22, 2023

pkozlowski-opensource added the action: review The PR is still awaiting reviews from at least one requested reviewer label Feb 22, 2023

pkozlowski-opensource marked this pull request as draft February 22, 2023 11:21

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Prototype of the RxJS interop layer for signals #49154

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feat(core): Mark components for check if they read a signal #49153

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		* directive is destroyed. Otherwise the callbacks run when a corresponding injector is destroyed.
		*/

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