Revert "inital"

This reverts commit d1e8ecb.

Author: alexforsyth

packages/fetch-http-handler/karma.conf.js

@@ -2,12 +2,7 @@ process.env.CHROME_BIN = require("puppeteer").executablePath();
 module.exports = function (config) {
   config.set({
     frameworks: ["jasmine", "karma-typescript"],
-    files: [
-      "src/stream-collector.ts",
-      "src/stream-collector.browser.spec.ts",
-      "src/fetch-http-handler.ts",
-      "src/fetch-http-handler.browser.spec.ts"
-    ],
+    files: ["src/stream-collector.ts", "src/stream-collector.browser.spec.ts"],
     exclude: ["**/*.d.ts"],
     preprocessors: {
       "**/*.ts": "karma-typescript"

packages/fetch-http-handler/src/fetch-http-handler.browser.spec.ts

@@ -53,7 +53,8 @@ export class FetchHttpHandler implements HttpHandler {
     const requestOptions: RequestInit = {
       body: request.body,
       headers: new Headers(request.headers),
-      method: request.method
+      method: request.method,
+      mode: "cors"
     };
 
     // some browsers support abort signal