Angular library build error with enableIvy=false

Type of Issue

[x ] Bug Report
[ ] Feature Request

Description

In my project , I set up “enableIvy”: false would be error. If I replacing “enableIvy”: false with “compilationMode”: “partial” , it can work normally, but I don’t know why

How To Reproduce

my test project: https://github.com/yinshuxun/test-ngpackager

git clone https://github.com/yinshuxun/test-ngpackager.git
yarn 
yarn build

Expected Behaviour

Version Information

$ node_modules/.bin/ng-packagr --version
ng-packagr:            12.2.0
@angular/compiler:     12.2.1
rollup:                2.56.2
typescript:            4.3.5

Please include all version numbers that might be relevant, e.g. third-party libraries

[JounQin]

That’s our internal package, so the whole source code can not be provided.

That’s OK you won’t help, let’s wait for other active maintainers.

Besides, we’ve already found a workaround by a custom tsconfig like following as Angular document.

{
  "angularCompilerOptions": {
    "enableIvy": true,
    "compilationMode": "partial",
    "strictMetadataEmit": false
  }
}

[SchnWalter]

@yinshuxun, that is not a reproduction, you are only re-exporting a closed source library.

And that one has quite a few dependencies, some of which are Angular libraries. You should add a 2nd minimal example library that can trigger the same issue when being re-exported, otherwise we can’t really help you with anything. We need to see the full code and you should work on providing a minimal reproduction, we can’t and won’t review tens of libraries for you.