Previously, ngcc's `Renderer` would add some constants in the processed files which were emitted as ES2015 code (e.g. `const` declarations). This would result in invalid ES5 generated code that would break when run on browsers that do not support the emitted format. This commit fixes it by adding a `printStatement()` method to `RenderingFormatter`, which can convert statements to JavaScript code in a suitable format for the corresponding `RenderingFormatter`. Additionally, the `translateExpression()` and `translateStatement()` ngtsc helper methods are augmented to accept an extra hint to know whether the code needs to be translated to ES5 format or not. Fixes #32665 PR Close #33514
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