Drop IE11 Support (#476)

src/Explorer/Graph/GraphExplorerComponent/GremlinSimpleClient.ts

@@ -4,11 +4,8 @@
  * - inspired from gremlin-javascript for nodejs: https://github.com/jbmusso/gremlin-javascript
  * - tested on cosmosdb gremlin server
  * - only supports sessionless gremlin requests
- * - Relies on text-encoding polyfill (github.com/inexorabletash/text-encoding) for TextEncoder/TextDecoder on IE, Edge.
  */
 
-import { TextEncoder, TextDecoder } from "text-encoding";
-
 export interface GremlinSimpleClientParameters {
   endpoint: string; // The websocket endpoint
   user: string;

src/Libs/is-integer-polyfill.js

@@ -1,5 +0,0 @@
-Number.isInteger =
-  Number.isInteger ||
-  function(value) {
-    return typeof value === "number" && isFinite(value) && Math.floor(value) === value;
-  };

src/Main.tsx

@@ -1,18 +1,8 @@
 // CSS Dependencies
-import "abort-controller/polyfill";
-import "babel-polyfill";
 import "bootstrap/dist/css/bootstrap.css";
-import "es6-object-assign/auto";
-import "es6-symbol/implement";
-import "object.entries/auto";
 import { initializeIcons } from "office-ui-fabric-react/lib/Icons";
-import "promise-polyfill/src/polyfill";
-import "promise.prototype.finally/auto";
 import React, { useState } from "react";
 import ReactDOM from "react-dom";
-import "url-polyfill/url-polyfill.min";
-import "webcrypto-liner/build/webcrypto-liner.shim.min";
-import "whatwg-fetch";
 import "../externals/jquery-ui.min.css";
 import "../externals/jquery-ui.min.js";
 import "../externals/jquery-ui.structure.min.css";
@@ -64,7 +54,6 @@ import { useConfig } from "./hooks/useConfig";
 import { useKnockoutExplorer } from "./hooks/useKnockoutExplorer";
 import { useSidePanel } from "./hooks/useSidePanel";
 import { KOCommentEnd, KOCommentIfStart } from "./koComment";
-import "./Libs/is-integer-polyfill";
 import "./Libs/jquery";
 import "./Shared/appInsights";
 import { userContext } from "./UserContext";

src/Terminal/index.ts

@@ -1,5 +1,3 @@
-import "babel-polyfill";
-import "promise-polyfill/src/polyfill"; // polyfill Promise on IE
 import "@jupyterlab/terminal/style/index.css";
 import "./index.css";
 import { ServerConnection } from "@jupyterlab/services";

src/setupTests.ts

@@ -1,7 +1,8 @@
-import Adapter from "enzyme-adapter-react-16";
 import { configure } from "enzyme";
+import Adapter from "enzyme-adapter-react-16";
 import "jest-canvas-mock";
 import { initializeIcons } from "office-ui-fabric-react";
+import { TextDecoder, TextEncoder } from "util";
 configure({ adapter: new Adapter() });
 initializeIcons();
 
@@ -13,3 +14,5 @@ if (typeof window.URL.createObjectURL === "undefined") {
 (<any>window).$ = (<any>window).jQuery = require("jquery");
 (<any>global).$ = (<any>global).$.jQuery = require("jquery");
 require("jquery-ui-dist/jquery-ui");
+(<any>global).TextEncoder = TextEncoder;
+(<any>global).TextDecoder = TextDecoder;

src/workers/upload/index.ts

@@ -1,7 +1,6 @@
-import "babel-polyfill";
 import { DocumentClientParams, UploadDetailsRecord, UploadDetails } from "./definitions";
 import { client } from "../../Common/CosmosClient";
-import { configContext, updateConfigContext } from "../../ConfigContext";
+import { updateConfigContext } from "../../ConfigContext";
 import { updateUserContext } from "../../UserContext";
 import { getErrorMessage } from "../../Common/ErrorHandlingUtils";