Using native fetch on supported browsers

src/index.ts

@@ -1,5 +1,6 @@
 import { Observable, Lock } from "@hibas123/utils";
-import fetch from "cross-fetch"
+//this references global on node and window in browser
+const fetch = this.fetch ? this.fetch : require("cross-fetch").default;
 
 export interface IFileVersion {
    version: string;