external node_modules conflict with local typings, duplicate identifier errors

[magnattic]

I am not sure if this is the fault of the external node module or something in seed, or just me using it wrong, but I keep running into duplicate identifier issues when trying to use libraries. Right now I cannot get angular2-highcharts to work with seed.

Steps to reproduce and a minimal demo of the problem

1. Clone the current angular2-seed.
2. Add to package.json under dependencies: "angular2-highcharts": "^0.0.6"

3. Add simple.chart.ts under src/home/components/:

   import { Component } from 'angular2/core';
      import { CHART_DIRECTIVES } from 'angular2-highcharts';
   
      @Component({
          selector: 'simple-chart-example',
          directives: [CHART_DIRECTIVES],
          template: `
              <chart [options]="options"></chart>
          `
      })
      export class SimpleChartExample {
          constructor() {
              this.options = {
                  title : { text : 'simple chart' },
                  series: [{
                      data: [29.9, 71.5, 106.4, 129.2],
                  }]
              };
          }
          options: Object;
      }

4. Run npm install and npm start.

Current behavior

During build.dev.js I get about 80 errors about jasmine and es6-shim typings looking like this:

C:/Projekte/angular2-seed2/node_modules/angular2-highcharts/typings/browser/ambient/es6-shim/index.d.ts(8,14): error TS2300: Duplicate identifier 'PropertyKey'.
C:/Projekte/angular2-seed2/node_modules/angular2-highcharts/typings/browser/ambient/es6-shim/index.d.ts(11,5): error TS2300: Duplicate identifier 'done'.
[...]
C:/Projekte/angular2-seed2/typings/browser/ambient/es6-shim/index.d.ts(8,14): error TS2300: Duplicate identifier 'PropertyKey'.
C:/Projekte/angular2-seed2/typings/browser/ambient/es6-shim/index.d.ts(11,5): error TS2300: Duplicate identifier 'done'.
[...]

The site starts, but the component will not work because it is not being properly compiled.

Expected/desired behavior

No errors and a working application. (obviously)

[mgechev]

Here are instructions how to solve the Duplicate identifier error http://blog.mgechev.com/2016/03/28/ambient-type-definitions-duplicate-identifier-typescript-fix/.

[magnattic]

Thanks for the link. Unfortunately I don't see how that fixes my problem, as the tsconfig in seed (which I use) is already excluding node_modules. But for some reason the definitions of /node_modules/angular2-highcharts/typings still show up as duplicate identifiers. I googled that topic a lot before asking here, is it possible that angular2-highcharts screws this up by adding <reference ..> in its dist files and the exclude is ignored because of the import of those files through import { CHART_DIRECTIVES } from 'angular2-highcharts' ?

I could obviously add an exclude for the es6-shim and jasmine typings in my own typings folder (or just not generate them in the first place), but then wouldn't the problem occur when the next node_module uses one of those typings?