Error when import in angular project

When imported in an Angular project, it prevents Angular application from starting because of the deprecated dependency d3-collection which redefines some collection classes in the global score, like Map, Set. These old incomplete implementations cause problems.

in the core.js of Angular, it uses Map and Set of the new language specification
``` javascript
// like this:
this.source = source;
var records = this._records = new Map();
// like this:
var componentDefPendingResolution = new Set();
```