In the integration test suite of ngcc, we load a set of files from `node_modules` into memory. This includes the `typescript` package and `@angular` scoped packages, which account for a large number of large files that needs to be loaded from disk. This commit moves this work to the top-level, such that it doesn't have to be repeated in all tests. PR Close #38840
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