The `ɵɵngDeclareComponent` calls are designed to be translated to fully AOT compiled code during a build transform, but in cases this is not done it is still possible to compile the declaration object in the browser using the JIT compiler. This commit adds a runtime implementation of `ɵɵngDeclareComponent` which invokes the JIT compiler using the declaration object, such that a compiled component definition is made available to the Ivy runtime. PR Close #40127
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