Previously, it was possible for multiple instance of ngcc to be running at the same time, but this is not supported and can cause confusing and flakey errors at build time. Now, only one instance of ngcc can run at a time. If a second instance tries to execute it fails with an appropriate error message. See https://github.com/angular/angular/issues/32431#issuecomment-571825781 PR Close #34722
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