e23fd1f382
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
This package contains a FileLinker and supporting code to be able to "link" partial declarations of components, directives, etc in libraries to produce the full definitions.
The partial declaration format allows library packages to be published to npm without exposing the underlying Ivy instructions.
The tooling here allows application build tools (e.g. CLI) to produce fully compiled components, directives, etc at the point when the application is bundled.
These linked files can be cached outside node_modules so it does not suffer from problems of mutating packages in node_modules.
Generally this tooling will be wrapped in a transpiler specific plugin, such as the provided Babel plugin.
Unit Testing
The unit tests are built and run using Bazel:
yarn bazel test //packages/compiler-cli/linker/test