Rollup Issue - Resolves fail when using Rollup, multiple extra classes are included in the build about angular

[christopherthielen]

Thanks for the detailed description and instructions. I've run into this issue before, and didn't come to an acceptable solution.

ngc relies on Typescript when compiling modules and components. If you step into the ngc code, you will see it ask typescript to process the entry points. Immediately after, the file paths have been resolved to ui-router-core/lib/*. It seems that typescript itself doesn't follow the tsnext/module fields when using moduleResolution: node, although I don't believe they claim to.

I added a mapping to your tsconfig-aot.js which links ui-router-core to the esm code. The code ngc generates now points into ui-router-core/lib-esm/*, but rollup is still adding two copies to the bundle.

  "compilerOptions": {
    "baseUrl": "",
    "target": "es5",
    "module": "es2015",
    "moduleResolution": "node",
    "sourceMap": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "lib": ["es2015", "dom"],
    "noImplicitAny": true,
    "suppressImplicitAnyIndexErrors": true,
    "typeRoots": [
      "./node_modules/@types",
      "./node_modules"
    ],
    "types": [
      "node"
    ],
    "paths": {
      "ui-router-core": ["node_modules/ui-router-core/lib-esm"]
    }
  },

Perhaps this information will help get you past your current block. I can't dig into this further today, but let me know what you come up with.

[cloudmark]

@christopherthielen just checked, it seems that the path does not have any affect on the imports. e.g. in src/client/app/home/home.component.ngfactory.ts the import is still import * as import31 from 'ui-router-core/lib/router';. Are the paths working for you?

[cloudmark]

Looking at the module resolution logs (as we have discussed on Gitter) its looks that the build copies stuff to dist/tmp/. I modified the paths to path resolution to

 "paths": {
      "ui-router-core": ["../../node_modules/ui-router-core/lib-esm"],
      "ui-router-ng2": ["../../node_modules/ui-router-ng2/lib"]
    } 

and it works. If anyone is using the angular-seed https://github.com/mgechev/angular-seed you need to add the above to src/client/tsconfig.json