History

George Kalpakas 66effde9f3 fix(ngcc): do not spawn unlocker processes on cluster workers (#36569 )

The current ngcc lock-file strategy spawns a new process in order to
capture a potential `SIGINT` and remove the lock-file. For more
information see #35861.

Previously, this unlocker process was spawned as soon as the `LockFile`
was instantiated in order to have it available as soon as possible
(given that spawning a process is an asynchronous operation). Since the
`LockFile` was instantiated and passed to the `Executor`, this meant
that an unlocker process was spawned for each cluster worker, when
running ngcc in parallel mode. These processes were not needed, since
the `LockFile` was not used in cluster workers, but we still had to pay
the overhead of each process' own memory and V8 instance.
(NOTE: This overhead was small compared to the memory consumed by ngcc's
normal operations, but still unnecessary.)

This commit avoids the extra processes by only spawning an unlocker
process when running on the cluster master process and not on worker
processes.

PR Close #36569

2020-04-15 09:25:27 -07:00

src

fix(ngcc): do not spawn unlocker processes on cluster workers (#36569 )

2020-04-15 09:25:27 -07:00

test

fix(ngcc): do not spawn unlocker processes on cluster workers (#36569 )

2020-04-15 09:25:27 -07:00

BUILD.bazel

fix(ngcc): use path-mappings from tsconfig in dependency resolution (#36180 )

2020-03-24 10:16:12 -07:00

index.ts

style(ngcc): reformat of ngcc after clang update (#36447 )

2020-04-06 09:26:57 -07:00

main-ivy-ngcc.ts

fix(ngcc): rename the executable from ivy-ngcc to ngcc (#33140 )

2019-10-14 16:29:14 +00:00

main-ngcc.ts

fix(ngcc): force ngcc to exit on error (#36622 )

2020-04-15 09:24:54 -07:00

README.md

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README.md

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