Elgato_dark/angular
1
0
Fork 0
mirror of https://github.com/angular/angular synced 2026-05-24 09:28:37 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions
angular/packages/compiler-cli/ngcc
History
Alex Rickabaugh a006edefd1 refactor(compiler-cli): introduce onlyPublishPublicTypingsForNgModules (#45894) 
When generating .d.ts metadata for NgModules, by default we emit type
references to their declarations, imports, and exports. However, this
information is not necessarily useful to consumers. References to private
directives (those that aren't exported by the NgModule) for example aren't
at all useful as they can only affect other components declared in the
NgModule. References to imports are of limited usefulness - they might be
helpful for an IDE to understand the DI structure of an application, but
aren't at all used by a downstream compiler.

Generating this metadata is not without cost. When an incremental build
system uses changes in inputs to determine when a rebuild is necessary, any
changes in .d.ts files might cause downstream targets to rebuild. If those
.d.ts changes are in the "private" side of the NgModule (imports or non-
exported directives/pipes), then these rebuilds are wholly unnecessary.

This commit introduces the `onlyPublishPublicTypingsForNgModules` flag for
the compiler. When this flag is set, the compiler will filter the emitted
references in NgModule .d.ts output and only reference those directives/
pipes that are exported from the NgModule (its public API surface). Omitting
the flag preserves the existing behavior of emitting all references, both
public and private.

This is especially useful for build systems such as Bazel.

PR Close #45894
2022-06-02 13:39:14 -07:00
..
src refactor(compiler-cli): introduce onlyPublishPublicTypingsForNgModules (#45894) 2022-06-02 13:39:14 -07:00
test fix(ngcc): cope with packages following APF v14+ (#45833) 2022-05-06 09:51:14 -07:00
BUILD.bazel fix(language-service): Add resource files as roots to their associated projects (#45601) 2022-05-10 09:36:26 -07:00
index.ts refactor(compiler-cli): do not use __filename or __dirname global for ESM compatibility (#43431) 2021-10-01 18:28:45 +00:00
main-ngcc.ts build: enable useUnknownInCatchVariables (#44679) 2022-02-01 18:17:29 +00:00
README.md refactor(ivy): move ngcc into a higher level folder (#29092) 2019-03-20 14:45:54 -04:00

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