b015d3e950
When a `ViewContainerRef` is injected, we dynamically create a comment node next to the host so that it can be used as an anchor point for inserting views. The comment node is inserted through the `appendChild` helper from `node_manipulation.ts` in most cases. The problem with using `appendChild` here is that it has some extra logic which doesn't return a parent `RNode` if an element is at the root of a component. I __think__ that this is a performance optimization which is used to avoid inserting an element in one place in the DOM and then moving it a bit later when it is projected. This can break down in some cases when creating a `ViewContainerRef` for a non-component node at the root of another component like the following: ``` <root> <div #viewContainerRef></div> </root> ``` In this case the `#viewContainerRef` node is at the root of a component so we intentionally don't insert it, but since its anchor element was created manually, it'll never be projected. This will prevent any views added through the `ViewContainerRef` from being inserted into the DOM. These changes resolve the issue by not going through `appendChild` at all when creating a comment node for `ViewContainerRef`. This should work identically since `appendChild` doesn't really do anything with the T structures anyway, it only uses them to reach the relevant DOM nodes. Fixes #39556. PR Close #39599
Bundle
js_expected_symbol_test
This folder contains tests which assert that most of the code is tree shaken away. This is asserted by keeping gold files of all symbols which are expected to be retained. When doing renaming it is often necessary to update the gold files, to do so use these commands:
yarn bazel run --config=ivy //packages/core/test/bundling/injection:symbol_test.accept
yarn bazel run --config=ivy //packages/core/test/bundling/cyclic_import:symbol_test.accept
yarn bazel run --config=ivy //packages/core/test/bundling/forms:symbol_test.accept
yarn bazel run --config=ivy //packages/core/test/bundling/hello_world:symbol_test.accept
yarn bazel run --config=ivy //packages/core/test/bundling/router:symbol_test.accept
yarn bazel run --config=ivy //packages/core/test/bundling/todo:symbol_test.accept
Running all symbol tests
To run all symbol tests with one command, you can use the following scripts:
yarn run symbol-extractor:check
yarn run symbol-extractor:update