The types of directives and pipes that are used in a component's template may be emitted into the partial declaration wrapped inside a closure, which is needed when the type is declared later in the module. This poses a problem for JIT compilation of partial declarations, as this closure is indistinguishable from a class reference itself. To mark the forward reference function as such, this commit changes the partial declaration codegen to emit a `forwardRef` invocation wrapped around the closure, which ensures that the closure is properly tagged as a forward reference. This allows the forward reference to be treated as such during JIT compilation. PR Close #40117
Angular linker - Babel plugin
This package contains a Babel plugin that can be used to find and link partially compiled declarations in library source code. See the linker package README for more information.
Unit Testing
The unit tests are built and run using Bazel:
yarn bazel test //packages/compiler-cli/linker/babel/test