Dynamics CRM access from TypeScript

I don't think you can avoid obtaining the root through the window.Xrm object, but wrapping that access means doing it only once.

With the appropriate ts templates installed - namely:

Install-Package xrm.TypeScript.DefinitelyTyped

Something this straightforward should work

class CrmAccess {
  constructor(private context: Xrm.XrmStatic) { }
  read() {
    //stay within the typed environment
    //return this.context.Page....;
  }
}

Then initalise it just once as follows

var crmAccess = new CrmAccess(window.Xrm);
crmAccess.read();

In typescript (/questions/tagged/typescript), I write (<any>window.parent).Xrm. so that using window.parent.Xrm compiles without an error. Here's an example:

let titleValue = (<any>window.parent).Xrm.Page.data.entity.attributes
  .get("name").getValue()