To persist some of its state, `ngcc` needs to update `package.json` files (both in memory and on disk). This refactoring abstracts these operations behind the `PackageJsonUpdater` interface, making it easier to orchestrate them from different contexts (e.g. when running tasks in parallel on multiple processes). Inspired by/Based on @alxhub's prototype: alxhub/angular@cb631bdb1 PR Close #32427
Angular Compatibility Compiler (ngcc)
This compiler will convert node_modules compiled with ngc, into node_modules which
appear to have been compiled with ngtsc.
This conversion will allow such "legacy" packages to be used by the Ivy rendering engine.
Building
The project is built using Bazel:
yarn bazel build //packages/compiler-cli/ngcc
Unit Testing
The unit tests are built and run using Bazel:
yarn bazel test //packages/compiler-cli/ngcc/test
Integration Testing
There are tests that check the behavior of the overall executable:
yarn bazel test //packages/compiler-cli/ngcc/test:integration