Pete Bacon Darwin 1aae94a421 perf(ngcc): cache parsed tsconfig between runs
This commit will store a cached copy of the parsed tsconfig
that can be reused if the tsconfig path is the same.

This will improve the ngcc "noop" case, where there is no processing
to do, when the entry-points have already been processed.
Previously we were parsing this config every time we checked for
entry-points to process, which can take up to seconds in some
cases.

Cherry-picked from #37417 (6e7bd939f6901539305de0917350c5ebc328e775).

Resolves #36882
2020-06-08 10:54:30 +01:00
..

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