e79ce386fc
The compilation result of components may have inserted template functions into the constant pool, which would be inserted into the Babel AST upon program exit. Babel will then proceed with visiting this newly inserted subtree, but we have already cleaned up the linker instance when exiting the program. Any call expressions within the template functions would then fail to be processed, as a file linker would no longer be available. Since the inserted AST subtree is known not to contain yet more partial declarations, it is safe to skip visiting call expressions when no file linker is available. PR Close #39707
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