ng-packagr barrel issue

When referencing a Typescript barrel then metadata will not be generated by ng-packagr.

When you run

# same as: ng-packagr -p package.json
yarn build

You can see that the generated dist/ngpackagr-barrel-issue.metadata.json misses all metadata info of the DummyModule:

{"__symbolic":"module","version":4,"exports":[{"from":"./src"}],"metadata":{},"origins":{},"importAs":"ngpackagr-barrel-issue"}

When you change the public_api.ts to reference the index.ts file specifically:

export * from './src/index';

You can see that the generated dist/ngpackagr-barrel-issue.metadata.json is generating the appropriate metadata:

{"__symbolic":"module","version":4,"exports":[{"from":"./src/sub"}],"metadata":{"DummyModule":{"__symbolic":"class","decorators":[{"__symbolic":"call","expression":{"__symbolic":"reference","module":"@angular/core","name":"NgModule","line":3,"character":1},"arguments":[{"imports":[{"__symbolic":"reference","module":"@angular/common","name":"CommonModule","line":4,"character":12}]}]}],"members":{}}},"origins":{"DummyModule":"./src/dummy.module"},"importAs":"ngpackagr-barrel-issue"}

But notice that this counts for all the Typescript barrels in your application, the ./src/sub module which is referenced in the ./src/index.ts file also needs to be changed to explicit /index rederences:

export * from './sub/index';
export * from './dummy.module';

So that all the metadata is generated in dist/ngpackagr-barrel-issue.metadata.json is correct:

{"__symbolic":"module","version":4,"metadata":{"SubModule":{"__symbolic":"class","decorators":[{"__symbolic":"call","expression":{"__symbolic":"reference","module":"@angular/core","name":"NgModule","line":3,"character":1},"arguments":[{"imports":[{"__symbolic":"reference","module":"@angular/common","name":"CommonModule","line":4,"character":12}]}]}],"members":{}},"DummyModule":{"__symbolic":"class","decorators":[{"__symbolic":"call","expression":{"__symbolic":"reference","module":"@angular/core","name":"NgModule","line":3,"character":1},"arguments":[{"imports":[{"__symbolic":"reference","module":"@angular/common","name":"CommonModule","line":4,"character":12}]}]}],"members":{}}},"origins":{"SubModule":"./src/sub/sub.module","DummyModule":"./src/dummy.module"},"importAs":"ngpackagr-barrel-issue"}