George Kalpakas 45c09416ed refactor(ngcc): move PathMappings to separate file to avoid circular dependency (#36626)
Now that `ngcc/src/ngcc_options` imports `FileWriter` type, there is a
circular dependency detected by the `ts-circular-deps:check` lint check:

```
ngcc/src/ngcc_options.ts
  → ngcc/src/writing/file_writer.ts
  → ngcc/src/packages/entry_point_bundle.ts
  → ngcc/src/ngcc_options.ts
```

This commit moves the `PathMappings` type (and related helpers) to a
separate file to avoid the circular dependency.

NOTE:
The circular dependency was only with taking types into account. There
was no circular dependency for the actual (JS) code.

PR Close #36626
2020-04-29 14:28:26 -07:00
..

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