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angular/packages/compiler-cli/ngcc
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JoostK 9470f56ad3 fix(compiler-cli): handle directives that refer to a namespaced class in a type parameter bound (#43511) 
The template type-checker has to emit type constructors for the
directives that are used in a template, where a type constructor's
declaration has to mirror the type parameter constraints as they were
originally declared. Therefore, the compiler analyzes whether a type
parameter constraint can be recreated, e.g. by generating imports for
any type references. Some type references cannot be recreated, in which
case the compiler has to fall back to a strategy where the type
constructor is created inline in the original source file (which comes
with a performance penalty).

There used to be an issue for type references to namespaced declarations.
The compiler is unable to emit such references such that an inline
type constructor should be used as fallback, but this did not happen.
This caused the attempt to emit the type reference to fail, as the
namespaced declaration cannot be located by the reference emitters.

This commit fixes the issue by using a stricter check to determine if a
type parameter requires an inline type constructor. The TypeScript
reflection host's `isStaticallyExported` logic was expanded to work for
any declaration instead of just classes, as e.g. type declarations can
also be referenced in a type parameter constraint.

Closes #43383

PR Close #43511
2021-09-20 19:56:31 +00:00
..
src fix(compiler-cli): handle directives that refer to a namespaced class in a type parameter bound (#43511) 2021-09-20 19:56:31 +00:00
test test(ngcc): use @angular npm packages in integration test (#43234) 2021-08-26 09:45:43 -07:00
BUILD.bazel perf(compiler-cli): detect semantic changes and their effect on an incremental rebuild (#40947) 2021-03-08 08:41:19 -08:00
index.ts refactor(ngcc): move logging code into ngtsc (#37114) 2020-06-22 13:38:47 -07:00
main-ivy-ngcc.ts build: update license headers to reference Google LLC (#37205) 2020-05-26 14:26:58 -04:00
main-ngcc.ts build: update license headers to reference Google LLC (#37205) 2020-05-26 14:26:58 -04:00
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