fix: fix IE11 crash + remove unused polyfills

fixes #448

src/components/RequestSamples/RequestSamples.tsx

@@ -14,8 +14,6 @@ export interface RequestSamplesProps {
 export class RequestSamples extends React.Component<RequestSamplesProps> {
   operation: OperationModel;
 
-  visited = new Set();
-
   render() {
     const { operation } = this.props;
     const requestBodyContent = operation.requestBody && operation.requestBody.content;

src/components/ResponseSamples/ResponseSamples.tsx

@@ -24,8 +24,6 @@ export interface ResponseSamplesProps {
 export class ResponseSamples extends React.Component<ResponseSamplesProps> {
   operation: OperationModel;
 
-  visited = new Set();
-
   render() {
     const { operation } = this.props;
     const responses = operation.responses.filter(response => {

src/components/StickySidebar/StickyResponsiveSidebar.tsx

@@ -10,7 +10,7 @@ import { AnimatedChevronButton } from './ChevronSvg';
 
 let Stickyfill;
 if (IS_BROWSER) {
-  Stickyfill = require('stickyfill').default;
+  Stickyfill = require('stickyfill');
 }
 
 export interface StickySidebarProps {

src/polyfills.ts

@@ -1,9 +1,8 @@
 import 'core-js/es6/promise';
-import 'core-js/fn/object/assign';
-import 'core-js/fn/string/starts-with';
-import 'core-js/fn/string/ends-with';
 import 'core-js/fn/array/find';
+import 'core-js/fn/object/assign';
+import 'core-js/fn/string/ends-with';
+import 'core-js/fn/string/starts-with';
 
 import 'core-js/es6/map';
-import 'core-js/es6/set';
 import 'core-js/es6/symbol';

src/services/ScrollService.ts

@@ -51,7 +51,8 @@ export class ScrollService {
     if (el === null) {
       return;
     }
-    return Math.trunc(el.getBoundingClientRect().top) <= this.options.scrollYOffset();
+    const top = el.getBoundingClientRect().top;
+    return (top > 0 ? Math.floor(top) : Math.ceil(top)) <= this.options.scrollYOffset();
   }
 
   subscribe(cb): () => void {

src/services/SearchWorker.worker.ts

@@ -1,5 +1,11 @@
 import * as lunr from 'lunr';
 
+try {
+  require('core-js/es6/promise'); // bundle into worker
+} catch (_) {
+  // nope
+}
+
 /* just for better typings */
 export default class Worker {
   add: typeof add = add;
@@ -72,8 +78,7 @@ export async function search<Meta = string>(
   }
 
   let searchResults = (await index).query(t => {
-    q
-      .trim()
+    q.trim()
       .toLowerCase()
       .split(/\s+/)
       .forEach(term => {