diff --git a/demo/webpack.config.ts b/demo/webpack.config.ts
index 8a5b5359..be23e15b 100644
--- a/demo/webpack.config.ts
+++ b/demo/webpack.config.ts
@@ -2,18 +2,14 @@ import * as CopyWebpackPlugin from 'copy-webpack-plugin';
 import ForkTsCheckerWebpackPlugin = require('fork-ts-checker-webpack-plugin');
 import * as HtmlWebpackPlugin from 'html-webpack-plugin';
 import { compact } from 'lodash';
-import { resolve } from 'path';
 import * as webpack from 'webpack';
+import { root } from '../webpack.config';
 
 const VERSION = JSON.stringify(require('../package.json').version);
 const REVISION = JSON.stringify(
   require('child_process').execSync('git rev-parse --short HEAD').toString().trim(),
 );
 
-function root(filename) {
-  return resolve(__dirname + '/' + filename);
-}
-
 const tsLoader = (env) => ({
   loader: 'ts-loader',
   options: {
@@ -48,18 +44,18 @@ const babelHotLoader = {
 
 export default (env: { playground?: boolean; bench?: boolean } = {}, { mode }) => ({
   entry: [
-    root('../src/polyfills.ts'),
+    root('src/polyfills.ts'),
     root(
       env.playground
-        ? 'playground/hmr-playground.tsx'
+        ? 'demo/playground/hmr-playground.tsx'
         : env.bench
-        ? '../benchmark/index.tsx'
-        : 'index.tsx',
+        ? 'benchmark/index.tsx'
+        : 'demo/index.tsx',
     ),
   ],
   output: {
     filename: 'redoc-demo.bundle.js',
-    path: root('dist'),
+    path: root('demo/dist'),
     globalObject: 'this',
   },
 
diff --git a/demo/fs.mock.js b/fs.mock.js
similarity index 100%
rename from demo/fs.mock.js
rename to fs.mock.js
diff --git a/package-lock.json b/package-lock.json
index 47cdfbd8..8641b88d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,7 +8,7 @@
       "version": "2.0.0-rc.48",
       "license": "MIT",
       "dependencies": {
-        "@redocly/openapi-core": "^1.0.0-beta.29",
+        "@redocly/openapi-core": "^1.0.0-beta.31",
         "@redocly/react-dropdown-aria": "^2.0.11",
         "@types/node": "^13.11.1",
         "classnames": "^2.2.6",
@@ -162,7 +162,6 @@
       "version": "7.12.11",
       "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.12.11.tgz",
       "integrity": "sha512-Ggg6WPOJtSi8yYQvLVjG8F/TlpWDlKx0OpS4Kt+xMQPs5OaGYWy+v1A+1TvxI6sAMGZpKWWoAQ1DaeQbImlItA==",
-      "dev": true,
       "dependencies": {
         "@babel/types": "^7.12.11",
         "jsesc": "^2.5.1",
@@ -173,7 +172,6 @@
       "version": "7.12.10",
       "resolved": "https://registry.npmjs.org/@babel/helper-annotate-as-pure/-/helper-annotate-as-pure-7.12.10.tgz",
       "integrity": "sha512-XplmVbC1n+KY6jL8/fgLVXXUauDIB+lD5+GsQEh6F6GBF1dq1qy4DP4yXWzDKcoqXB3X58t61e85Fitoww4JVQ==",
-      "dev": true,
       "dependencies": {
         "@babel/types": "^7.12.10"
       }
@@ -182,7 +180,6 @@
       "version": "7.12.11",
       "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.12.11.tgz",
       "integrity": "sha512-AtQKjtYNolKNi6nNNVLQ27CP6D9oFR6bq/HPYSizlzbp7uC1M59XJe8L+0uXjbIaZaUJF99ruHqVGiKXU/7ybA==",
-      "dev": true,
       "dependencies": {
         "@babel/helper-get-function-arity": "^7.12.10",
         "@babel/template": "^7.12.7",
@@ -193,7 +190,6 @@
       "version": "7.12.10",
       "resolved": "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.12.10.tgz",
       "integrity": "sha512-mm0n5BPjR06wh9mPQaDdXWDoll/j5UpCAPl1x8fS71GHm7HA6Ua2V4ylG1Ju8lvcTOietbPNNPaSilKj+pj+Ag==",
-      "dev": true,
       "dependencies": {
         "@babel/types": "^7.12.10"
       }
@@ -211,7 +207,6 @@
       "version": "7.12.5",
       "resolved": "https://registry.npmjs.org/@babel/helper-module-imports/-/helper-module-imports-7.12.5.tgz",
       "integrity": "sha512-SR713Ogqg6++uexFRORf/+nPXMmWIn80TALu0uaFb+iQIUoR7bOC7zBWyzBs5b3tBBJXuyD0cRu1F15GyzjOWA==",
-      "dev": true,
       "dependencies": {
         "@babel/types": "^7.12.5"
       }
@@ -273,7 +268,6 @@
       "version": "7.12.11",
       "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.12.11.tgz",
       "integrity": "sha512-LsIVN8j48gHgwzfocYUSkO/hjYAOJqlpJEc7tGXcIm4cubjVUf8LGW6eWRyxEu7gA25q02p0rQUWoCI33HNS5g==",
-      "dev": true,
       "dependencies": {
         "@babel/types": "^7.12.11"
       }
@@ -308,7 +302,6 @@
       "version": "7.12.11",
       "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.12.11.tgz",
       "integrity": "sha512-N3UxG+uuF4CMYoNj8AhnbAcJF0PiuJ9KHuy1lQmkYsxTer/MAH9UBNHsBoAX/4s6NvlDD047No8mYVGGzLL4hg==",
-      "dev": true,
       "bin": {
         "parser": "bin/babel-parser.js"
       },
@@ -520,7 +513,6 @@
       "version": "7.12.7",
       "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.12.7.tgz",
       "integrity": "sha512-GkDzmHS6GV7ZeXfJZ0tLRBhZcMcY0/Lnb+eEbXDBfCAcZCjrZKe6p3J4we/D24O9Y8enxWAg1cWwof59yLh2ow==",
-      "dev": true,
       "dependencies": {
         "@babel/code-frame": "^7.10.4",
         "@babel/parser": "^7.12.7",
@@ -531,7 +523,6 @@
       "version": "7.12.12",
       "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.12.12.tgz",
       "integrity": "sha512-s88i0X0lPy45RrLM8b9mz8RPH5FqO9G9p7ti59cToE44xFm1Q+Pjh5Gq4SXBbtb88X7Uy7pexeqRIQDDMNkL0w==",
-      "dev": true,
       "dependencies": {
         "@babel/code-frame": "^7.12.11",
         "@babel/generator": "^7.12.11",
@@ -548,7 +539,6 @@
       "version": "7.12.12",
       "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.12.12.tgz",
       "integrity": "sha512-lnIX7piTxOH22xE7fDXDbSHg9MM1/6ORnafpJmov5rs0kX5g4BZxeXNJLXsMRiO0U5Rb8/FvMS6xlTnTHvxonQ==",
-      "dev": true,
       "dependencies": {
         "@babel/helper-validator-identifier": "^7.12.11",
         "lodash": "^4.17.19",
@@ -718,7 +708,6 @@
       "version": "0.8.8",
       "resolved": "https://registry.npmjs.org/@emotion/is-prop-valid/-/is-prop-valid-0.8.8.tgz",
       "integrity": "sha512-u5WtneEAr5IDG2Wv65yhunPSMLIpuKsbuOktRojfrEiEvRyC85LgPMZI63cr7NUqT8ZIGdSVg8ZKGxIug4lXcA==",
-      "dev": true,
       "dependencies": {
         "@emotion/memoize": "0.7.4"
       }
@@ -726,20 +715,17 @@
     "node_modules/@emotion/memoize": {
       "version": "0.7.4",
       "resolved": "https://registry.npmjs.org/@emotion/memoize/-/memoize-0.7.4.tgz",
-      "integrity": "sha512-Ja/Vfqe3HpuzRsG1oBtWTHk2PGZ7GR+2Vz5iYGelAw8dx32K0y7PjVuxK6z1nMpZOqAFsRUPCkK1YjJ56qJlgw==",
-      "dev": true
+      "integrity": "sha512-Ja/Vfqe3HpuzRsG1oBtWTHk2PGZ7GR+2Vz5iYGelAw8dx32K0y7PjVuxK6z1nMpZOqAFsRUPCkK1YjJ56qJlgw=="
     },
     "node_modules/@emotion/stylis": {
       "version": "0.8.5",
       "resolved": "https://registry.npmjs.org/@emotion/stylis/-/stylis-0.8.5.tgz",
-      "integrity": "sha512-h6KtPihKFn3T9fuIrwvXXUOwlx3rfUvfZIcP5a6rh8Y7zjE3O06hT5Ss4S/YI1AYhuZ1kjaE/5EaOOI2NqSylQ==",
-      "dev": true
+      "integrity": "sha512-h6KtPihKFn3T9fuIrwvXXUOwlx3rfUvfZIcP5a6rh8Y7zjE3O06hT5Ss4S/YI1AYhuZ1kjaE/5EaOOI2NqSylQ=="
     },
     "node_modules/@emotion/unitless": {
       "version": "0.7.5",
       "resolved": "https://registry.npmjs.org/@emotion/unitless/-/unitless-0.7.5.tgz",
-      "integrity": "sha512-OWORNpfjMsSSUBVrRBVGECkhWcULOAJz9ZW8uK9qgxD+87M7jHRcvh/A96XXNhXTLmKcoYSQtBEX7lHMO7YRwg==",
-      "dev": true
+      "integrity": "sha512-OWORNpfjMsSSUBVrRBVGECkhWcULOAJz9ZW8uK9qgxD+87M7jHRcvh/A96XXNhXTLmKcoYSQtBEX7lHMO7YRwg=="
     },
     "node_modules/@eslint/eslintrc": {
       "version": "0.3.0",
@@ -1555,9 +1541,9 @@
       }
     },
     "node_modules/@redocly/openapi-core": {
-      "version": "1.0.0-beta.29",
-      "resolved": "https://registry.npmjs.org/@redocly/openapi-core/-/openapi-core-1.0.0-beta.29.tgz",
-      "integrity": "sha512-K+MX/Xjh7S4YglW3q1WAH+058oML5fKESMl5PpsEIlA8UsmEtxQ+tynGiVMKFS7kCZqGE5d7b/EWv2ZTPr84jw==",
+      "version": "1.0.0-beta.31",
+      "resolved": "https://registry.npmjs.org/@redocly/openapi-core/-/openapi-core-1.0.0-beta.31.tgz",
+      "integrity": "sha512-lEEFzkAfVid2JxGu8XI26NkJ12Z0uMfynPTK5CN2bxWyoTZlqYY/x5nFRiHZ/jcGkDWqkJUmJtizv8aQ9nETUA==",
       "dependencies": {
         "@redocly/ajv": "^6.12.3",
         "@types/node": "^14.11.8",
@@ -2524,7 +2510,6 @@
       "version": "6.12.6",
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.6.tgz",
       "integrity": "sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==",
-      "dev": true,
       "dependencies": {
         "fast-deep-equal": "^3.1.1",
         "fast-json-stable-stringify": "^2.0.0",
@@ -3163,7 +3148,6 @@
       "version": "1.12.0",
       "resolved": "https://registry.npmjs.org/babel-plugin-styled-components/-/babel-plugin-styled-components-1.12.0.tgz",
       "integrity": "sha512-FEiD7l5ZABdJPpLssKXjBUJMYqzbcNzBowfXDCdJhOpbhWiewapUaY+LZGT8R4Jg2TwOjGjG4RKeyrO5p9sBkA==",
-      "dev": true,
       "dependencies": {
         "@babel/helper-annotate-as-pure": "^7.0.0",
         "@babel/helper-module-imports": "^7.0.0",
@@ -3177,8 +3161,7 @@
     "node_modules/babel-plugin-syntax-jsx": {
       "version": "6.18.0",
       "resolved": "https://registry.npmjs.org/babel-plugin-syntax-jsx/-/babel-plugin-syntax-jsx-6.18.0.tgz",
-      "integrity": "sha1-CvMqmm4Tyno/1QaeYtew9Y0NiUY=",
-      "dev": true
+      "integrity": "sha1-CvMqmm4Tyno/1QaeYtew9Y0NiUY="
     },
     "node_modules/babel-preset-current-node-syntax": {
       "version": "1.0.1",
@@ -3864,8 +3847,7 @@
     "node_modules/camelize": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/camelize/-/camelize-1.0.0.tgz",
-      "integrity": "sha1-FkpUg+Yw+kMh5a8HAg5TGDGyYJs=",
-      "dev": true
+      "integrity": "sha1-FkpUg+Yw+kMh5a8HAg5TGDGyYJs="
     },
     "node_modules/capture-exit": {
       "version": "2.0.0",
@@ -5117,7 +5099,6 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/css-color-keywords/-/css-color-keywords-1.0.0.tgz",
       "integrity": "sha1-/qJhbcZ2spYmhrOvjb2+GAskTgU=",
-      "dev": true,
       "engines": {
         "node": ">=4"
       }
@@ -5182,7 +5163,6 @@
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/css-to-react-native/-/css-to-react-native-3.0.0.tgz",
       "integrity": "sha512-Ro1yETZA813eoyUp2GDBhG2j+YggidUmzO1/v9eYBKR2EHVEniE2MI/NqpTQ954BMpTPZFsGNPm46qFB9dpaPQ==",
-      "dev": true,
       "dependencies": {
         "camelize": "^1.0.0",
         "css-color-keywords": "^1.0.0",
@@ -5397,7 +5377,6 @@
       "version": "4.3.1",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.1.tgz",
       "integrity": "sha512-doEwdvm4PCeK4K3RQN2ZC2BYUBaxwLARCqZmMjtF8a51J2Rb0xpVloFRnCODwqjpwnAoao4pelN8l3RJdv3gRQ==",
-      "dev": true,
       "dependencies": {
         "ms": "2.1.2"
       },
@@ -8973,7 +8952,6 @@
       "version": "11.12.0",
       "resolved": "https://registry.npmjs.org/globals/-/globals-11.12.0.tgz",
       "integrity": "sha512-WOBp/EEGUiIsJSp7wcv/y6MO+lV9UoncWqxuFfm8eBwzWNgyfBd6Gz+IeKQ9jCmyhoH99g15M3T+QaVHFjizVA==",
-      "dev": true,
       "engines": {
         "node": ">=4"
       }
@@ -9329,7 +9307,6 @@
       "version": "3.3.2",
       "resolved": "https://registry.npmjs.org/hoist-non-react-statics/-/hoist-non-react-statics-3.3.2.tgz",
       "integrity": "sha512-/gGivxi8JPKWNm/W0jSmzcMPpfpPLc3dY/6GxhX2hQ9iGj3aDfklV4ET7NjKpSinLpJ5vafa9iiGIEZg10SfBw==",
-      "dev": true,
       "dependencies": {
         "react-is": "^16.7.0"
       }
@@ -12388,7 +12365,6 @@
       "version": "2.5.2",
       "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-2.5.2.tgz",
       "integrity": "sha512-OYu7XEzjkCQ3C5Ps3QIZsQfNpqoJyZZA99wd9aWd05NCtC5pWOkShK2mkL6HXQR6/Cy2lbNdPlZBpuQHXE63gA==",
-      "dev": true,
       "bin": {
         "jsesc": "bin/jsesc"
       },
@@ -12938,8 +12914,7 @@
     "node_modules/lodash": {
       "version": "4.17.20",
       "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
-      "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA==",
-      "dev": true
+      "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA=="
     },
     "node_modules/lodash._reinterpolate": {
       "version": "3.0.0",
@@ -13716,7 +13691,6 @@
       "version": "6.0.4",
       "resolved": "https://registry.npmjs.org/mobx/-/mobx-6.0.4.tgz",
       "integrity": "sha512-wT2QJT9tW19VSHo9x7RPKU3z/I2Ps6wUS8Kb1OO+kzmg7UY3n4AkcaYG6jq95Lp1R9ohjC/NGYuT2PtuvBjhFg==",
-      "dev": true,
       "funding": {
         "type": "opencollective",
         "url": "https://opencollective.com/mobx"
@@ -13832,8 +13806,7 @@
     "node_modules/ms": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
-      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
-      "dev": true
+      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
     },
     "node_modules/multicast-dns": {
       "version": "6.2.3",
@@ -15417,8 +15390,7 @@
     "node_modules/postcss-value-parser": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/postcss-value-parser/-/postcss-value-parser-4.1.0.tgz",
-      "integrity": "sha512-97DXOFbQJhk71ne5/Mt6cOu6yxsSfM0QGQyl0L25Gca4yGWEGJaig7l7gbCX623VqTBNGLRLaVUCnNkcedlRSQ==",
-      "dev": true
+      "integrity": "sha512-97DXOFbQJhk71ne5/Mt6cOu6yxsSfM0QGQyl0L25Gca4yGWEGJaig7l7gbCX623VqTBNGLRLaVUCnNkcedlRSQ=="
     },
     "node_modules/postcss/node_modules/source-map": {
       "version": "0.6.1",
@@ -15939,7 +15911,6 @@
       "version": "16.14.0",
       "resolved": "https://registry.npmjs.org/react/-/react-16.14.0.tgz",
       "integrity": "sha512-0X2CImDkJGApiAlcf0ODKIneSwBPhqJawOa5wCtKbu7ZECrmS26NvtSILynQ66cgkT/RJ4LidJOc3bUESwmU8g==",
-      "dev": true,
       "dependencies": {
         "loose-envify": "^1.1.0",
         "object-assign": "^4.1.1",
@@ -15953,7 +15924,6 @@
       "version": "16.14.0",
       "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-16.14.0.tgz",
       "integrity": "sha512-1gCeQXDLoIqMgqD3IO2Ah9bnf0w9kzhwN5q4FGnHZ67hBm9yePzB5JJAIQCc8x3pFnNlwFq4RidZggNAAkzWWw==",
-      "dev": true,
       "dependencies": {
         "loose-envify": "^1.1.0",
         "object-assign": "^4.1.1",
@@ -17078,7 +17048,6 @@
       "version": "0.19.1",
       "resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.19.1.tgz",
       "integrity": "sha512-n/zwRWRYSUj0/3g/otKDRPMh6qv2SYMWNq85IEa8iZyAv8od9zDYpGSnpBEjNgcMNq6Scbu5KfIPxNF72R/2EA==",
-      "dev": true,
       "dependencies": {
         "loose-envify": "^1.1.0",
         "object-assign": "^4.1.1"
@@ -17330,8 +17299,7 @@
     "node_modules/shallowequal": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/shallowequal/-/shallowequal-1.1.0.tgz",
-      "integrity": "sha512-y0m1JoUZSlPAjXVtPPW70aZWfIL/dSP7AFkRnniLCrK/8MDKog3TySTBmckD+RObVxH0v4Tox67+F14PdED2oQ==",
-      "dev": true
+      "integrity": "sha512-y0m1JoUZSlPAjXVtPPW70aZWfIL/dSP7AFkRnniLCrK/8MDKog3TySTBmckD+RObVxH0v4Tox67+F14PdED2oQ=="
     },
     "node_modules/shebang-command": {
       "version": "2.0.0",
@@ -17750,7 +17718,6 @@
       "version": "0.5.7",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
       "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
-      "dev": true,
       "engines": {
         "node": ">=0.10.0"
       }
@@ -18443,7 +18410,6 @@
       "version": "5.2.1",
       "resolved": "https://registry.npmjs.org/styled-components/-/styled-components-5.2.1.tgz",
       "integrity": "sha512-sBdgLWrCFTKtmZm/9x7jkIabjFNVzCUeKfoQsM6R3saImkUnjx0QYdLwJHBjY9ifEcmjDamJDVfknWm1yxZPxQ==",
-      "dev": true,
       "dependencies": {
         "@babel/helper-module-imports": "^7.0.0",
         "@babel/traverse": "^7.4.5",
@@ -19196,7 +19162,6 @@
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-2.0.0.tgz",
       "integrity": "sha1-3F5pjL0HkmW8c+A3doGk5Og/YW4=",
-      "dev": true,
       "engines": {
         "node": ">=4"
       }
@@ -22006,7 +21971,6 @@
       "version": "7.12.11",
       "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.12.11.tgz",
       "integrity": "sha512-Ggg6WPOJtSi8yYQvLVjG8F/TlpWDlKx0OpS4Kt+xMQPs5OaGYWy+v1A+1TvxI6sAMGZpKWWoAQ1DaeQbImlItA==",
-      "dev": true,
       "requires": {
         "@babel/types": "^7.12.11",
         "jsesc": "^2.5.1",
@@ -22017,7 +21981,6 @@
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       "version": "0.5.7",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
-      "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
-      "dev": true
+      "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w="
     },
     "source-map-loader": {
       "version": "1.1.3",
@@ -36581,7 +36519,6 @@
       "version": "5.2.1",
       "resolved": "https://registry.npmjs.org/styled-components/-/styled-components-5.2.1.tgz",
       "integrity": "sha512-sBdgLWrCFTKtmZm/9x7jkIabjFNVzCUeKfoQsM6R3saImkUnjx0QYdLwJHBjY9ifEcmjDamJDVfknWm1yxZPxQ==",
-      "dev": true,
       "requires": {
         "@babel/helper-module-imports": "^7.0.0",
         "@babel/traverse": "^7.4.5",
@@ -37181,8 +37118,7 @@
     "to-fast-properties": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-2.0.0.tgz",
-      "integrity": "sha1-3F5pjL0HkmW8c+A3doGk5Og/YW4=",
-      "dev": true
+      "integrity": "sha1-3F5pjL0HkmW8c+A3doGk5Og/YW4="
     },
     "to-object-path": {
       "version": "0.3.0",
@@ -39278,7 +39214,8 @@
       "version": "7.4.2",
       "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.2.tgz",
       "integrity": "sha512-T4tewALS3+qsrpGI/8dqNMLIVdq/g/85U98HPMa6F0m6xTbvhXU6RCQLqPH3+SlomNV/LdY6RXEbBpMH6EOJnA==",
-      "dev": true
+      "dev": true,
+      "requires": {}
     },
     "xml-name-validator": {
       "version": "3.0.0",
diff --git a/package.json b/package.json
index d0f38135..d1c82c89 100644
--- a/package.json
+++ b/package.json
@@ -134,7 +134,7 @@
     "styled-components": "^4.1.1 || ^5.1.1"
   },
   "dependencies": {
-    "@redocly/openapi-core": "^1.0.0-beta.29",
+    "@redocly/openapi-core": "^1.0.0-beta.31",
     "@redocly/react-dropdown-aria": "^2.0.11",
     "@types/node": "^13.11.1",
     "classnames": "^2.2.6",
diff --git a/webpack.config.ts b/webpack.config.ts
index d885afc7..5b84a25c 100644
--- a/webpack.config.ts
+++ b/webpack.config.ts
@@ -1,8 +1,8 @@
 /* tslint:disable:no-implicit-dependencies */
 import ForkTsCheckerWebpackPlugin = require('fork-ts-checker-webpack-plugin');
 import * as webpack from 'webpack';
-
 import * as path from 'path';
+import { resolve } from 'path';
 
 const nodeExternals = require('webpack-node-externals')({
   // bundle in modules that need transpiling + non-js (e.g. css)
@@ -32,6 +32,11 @@ const BANNER = `ReDoc - OpenAPI/Swagger-generated API Reference Documentation
   Version: ${VERSION}
   Repo: https://github.com/Redocly/redoc`;
 
+
+export function root(filename) {
+  return resolve(__dirname + '/' + filename);
+}
+
 export default (env: { standalone?: boolean } = {}, { mode }) => ({
   entry: env.standalone ? ['./src/polyfills.ts', './src/standalone.tsx'] : './src/index.ts',
   output: {
@@ -41,19 +46,14 @@ export default (env: { standalone?: boolean } = {}, { mode }) => ({
     libraryTarget: 'umd',
     globalObject: 'this',
   },
-
   devtool: 'source-map',
-
   resolve: {
     extensions: ['.ts', '.tsx', '.js', '.json'],
+    alias: {
+      fs: root('fs.mock.js'),
+    }
   },
-
-  node: {
-    fs: 'empty',
-  },
-
   performance: false,
-
   optimization: {
     minimize: !!env.standalone,
   },