diff --git a/playground/isolated-chat/package-lock.json b/playground/isolated-chat/package-lock.json
index a956057a..b89ba053 100644
--- a/playground/isolated-chat/package-lock.json
+++ b/playground/isolated-chat/package-lock.json
@@ -13249,9 +13249,9 @@
       }
     },
     "websocket-extensions": {
-      "version": "0.1.3",
-      "resolved": "https://registry.npmjs.org/websocket-extensions/-/websocket-extensions-0.1.3.tgz",
-      "integrity": "sha512-nqHUnMXmBzT0w570r2JpJxfiSD1IzoI+HGVdd3aZ0yNi3ngvQ4jv1dtHt5VGxfI2yj5yqImPhOK4vmIh2xMbGg=="
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/websocket-extensions/-/websocket-extensions-0.1.4.tgz",
+      "integrity": "sha512-OqedPIGOfsDlo31UNwYbCFMSaO9m9G/0faIHj5/dZFDMFqPTcx6UwqyOy3COEaEOg/9VsGIpdqn62W5KhoKSpg=="
     },
     "whatwg-encoding": {
       "version": "1.0.5",
diff --git a/playground/isolated-chat/yarn.lock b/playground/isolated-chat/yarn.lock
index 48b079b5..d7dce89a 100644
--- a/playground/isolated-chat/yarn.lock
+++ b/playground/isolated-chat/yarn.lock
@@ -945,6 +945,11 @@
     lodash "^4.17.13"
     to-fast-properties "^2.0.0"
 
+"@blakeembrey/deque@^1.0.3":
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/@blakeembrey/deque/-/deque-1.0.5.tgz#f4fa17fc5ee18317ec01a763d355782c7b395eaf"
+  integrity sha512-6xnwtvp9DY1EINIKdTfvfeAtCYw4OqBZJhtiqkT3ivjnEfa25VQ3TsKvaFfKm8MyGIEfE95qLe+bNEt3nB0Ylg==
+
 "@cnakazawa/watch@^1.0.3":
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/@cnakazawa/watch/-/watch-1.0.4.tgz#f864ae85004d0fcab6f50be9141c4da368d1656a"
@@ -2655,7 +2660,7 @@ chardet@^0.7.0:
   resolved "https://registry.yarnpkg.com/chardet/-/chardet-0.7.0.tgz#90094849f0937f2eedc2425d0d28a9e5f0cbad9e"
   integrity sha512-mT8iDcrh03qDGRRmoA2hmBJnxpllMR+0/0qlzjqZES6NdiWDcZkCNAk4rPFZ9Q85r27unkiNNg8ZOiwZXBHwcA==
 
-chokidar@^2.0.2, chokidar@^2.1.8:
+chokidar@^2.0.0, chokidar@^2.0.2, chokidar@^2.1.8:
   version "2.1.8"
   resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-2.1.8.tgz#804b3a7b6a99358c3c5c61e71d8728f041cff917"
   integrity sha512-ZmZUazfOzf0Nve7duiCKD23PFSCs4JPoYyccjUFF3aQkQadqBhfzhjkwBH2mNOG9cTBwhamM37EIsIkZw3nRgg==
@@ -3855,6 +3860,13 @@ escodegen@^1.11.0, escodegen@^1.9.1:
   optionalDependencies:
     source-map "~0.6.1"
 
+eslint-config-prettier@^4.1.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/eslint-config-prettier/-/eslint-config-prettier-4.3.0.tgz#c55c1fcac8ce4518aeb77906984e134d9eb5a4f0"
+  integrity sha512-sZwhSTHVVz78+kYD3t5pCWSYEdVSBR0PXnwjDRsUs8ytIrK8PLXw+6FKp8r3Z7rx4ZszdetWlXYKOHoUrrwPlA==
+  dependencies:
+    get-stdin "^6.0.0"
+
 eslint-config-react-app@^5.2.1:
   version "5.2.1"
   resolved "https://registry.yarnpkg.com/eslint-config-react-app/-/eslint-config-react-app-5.2.1.tgz#698bf7aeee27f0cea0139eaef261c7bf7dd623df"
@@ -3929,6 +3941,13 @@ eslint-plugin-jsx-a11y@6.2.3:
     has "^1.0.3"
     jsx-ast-utils "^2.2.1"
 
+eslint-plugin-prettier@^3.0.1:
+  version "3.1.4"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-prettier/-/eslint-plugin-prettier-3.1.4.tgz#168ab43154e2ea57db992a2cd097c828171f75c2"
+  integrity sha512-jZDa8z76klRqo+TdGDTFJSavwbnWK2ZpqGKNZ+VvweMW516pDUMmQ2koXvxEE4JhzNvTv+radye/bWGBmA6jmg==
+  dependencies:
+    prettier-linter-helpers "^1.0.0"
+
 eslint-plugin-react-hooks@^1.6.1:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/eslint-plugin-react-hooks/-/eslint-plugin-react-hooks-1.7.0.tgz#6210b6d5a37205f0b92858f895a4e827020a7d04"
@@ -4240,6 +4259,11 @@ fast-deep-equal@^3.1.1:
   resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-3.1.1.tgz#545145077c501491e33b15ec408c294376e94ae4"
   integrity sha512-8UEa58QDLauDNfpbrX55Q9jrGHThw2ZMdOky5Gl1CDtVeJDPVrG4Jxx1N8jw2gkWaff5UUuX1KJd+9zGe2B+ZA==
 
+fast-diff@^1.1.2:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/fast-diff/-/fast-diff-1.2.0.tgz#73ee11982d86caaf7959828d519cfe927fac5f03"
+  integrity sha512-xJuoT5+L99XlZ8twedaRf6Ax2TgQVxvgZOYoPKqZufmJib0tL2tegPBOZb1pVNgIhlqDlA0eO0c3wBvQcmzx4w==
+
 fast-glob@^2.0.2:
   version "2.2.7"
   resolved "https://registry.yarnpkg.com/fast-glob/-/fast-glob-2.2.7.tgz#6953857c3afa475fff92ee6015d52da70a4cd39d"
@@ -4603,6 +4627,11 @@ get-own-enumerable-property-symbols@^3.0.0:
   resolved "https://registry.yarnpkg.com/get-own-enumerable-property-symbols/-/get-own-enumerable-property-symbols-3.0.2.tgz#b5fde77f22cbe35f390b4e089922c50bce6ef664"
   integrity sha512-I0UBV/XOz1XkIJHEUDMZAbzCThU/H8DxmSfmdGcKPnVhu2VfFqr34jr9777IyaTYvxjedWhqVIilEDsCdP5G6g==
 
+get-stdin@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/get-stdin/-/get-stdin-6.0.0.tgz#9e09bf712b360ab9225e812048f71fde9c89657b"
+  integrity sha512-jp4tHawyV7+fkkSKyvjuLZswblUtz+SQKzSWnBbii16BuZksJlU1wuBYXY75r+duh/llF1ur6oNwi+2ZzjKZ7g==
+
 get-stream@^4.0.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-4.1.0.tgz#c1b255575f3dc21d59bfc79cd3d2b46b1c3a54b5"
@@ -7051,6 +7080,19 @@ once@^1.3.0, once@^1.3.1, once@^1.4.0:
   dependencies:
     wrappy "1"
 
+onchange@^5.2.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/onchange/-/onchange-5.2.0.tgz#85c1b502ce8538ddb64eb0557fdb1afa33396f51"
+  integrity sha512-kBNMF4KU1m0GkZCANckQZs3N41esf950T/gv7JIjNS6qWS8R34+iCKk/wmVRPEdaYCA+yi2aK2vNXS0RaB/V2A==
+  dependencies:
+    "@blakeembrey/deque" "^1.0.3"
+    arrify "^1.0.1"
+    chokidar "^2.0.0"
+    cross-spawn "^6.0.0"
+    minimist "^1.2.0"
+    supports-color "^5.5.0"
+    tree-kill "^1.2.0"
+
 onetime@^5.1.0:
   version "5.1.0"
   resolved "https://registry.yarnpkg.com/onetime/-/onetime-5.1.0.tgz#fff0f3c91617fe62bb50189636e99ac8a6df7be5"
@@ -8167,6 +8209,18 @@ prepend-http@^1.0.0:
   resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-1.0.4.tgz#d4f4562b0ce3696e41ac52d0e002e57a635dc6dc"
   integrity sha1-1PRWKwzjaW5BrFLQ4ALlemNdxtw=
 
+prettier-linter-helpers@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/prettier-linter-helpers/-/prettier-linter-helpers-1.0.0.tgz#d23d41fe1375646de2d0104d3454a3008802cf7b"
+  integrity sha512-GbK2cP9nraSSUF9N2XwUwqfzlAFlMNYYl+ShE/V+H8a9uNl/oUqB1w2EL54Jh0OlyRSd8RfWYJ3coVS4TROP2w==
+  dependencies:
+    fast-diff "^1.1.2"
+
+prettier@^1.16.4:
+  version "1.19.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.19.1.tgz#f7d7f5ff8a9cd872a7be4ca142095956a60797cb"
+  integrity sha512-s7PoyDv/II1ObgQunCbB9PdLmUcBZcnWOcxDh7O0N/UwDEsHyqkW+Qh28jW+mVuCdx7gLB0BotYI1Y6uI9iyew==
+
 pretty-bytes@^5.1.0:
   version "5.3.0"
   resolved "https://registry.yarnpkg.com/pretty-bytes/-/pretty-bytes-5.3.0.tgz#f2849e27db79fb4d6cfe24764fc4134f165989f2"
@@ -8240,7 +8294,7 @@ prompts@^2.0.1:
     kleur "^3.0.3"
     sisteransi "^1.0.4"
 
-prop-types@^15.6.2, prop-types@^15.7.2:
+prop-types@^15.6.0, prop-types@^15.6.2, prop-types@^15.7.2:
   version "15.7.2"
   resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.7.2.tgz#52c41e75b8c87e72b9d9360e0206b99dcbffa6c5"
   integrity sha512-8QQikdH7//R2vurIJSutZ1smHYTcLpRWEOlHnzcWHmBYrOGUysKwSsrC89BCiFj3CbrfJ/nXFdJepOVrY1GCHQ==
@@ -8364,6 +8418,11 @@ raf@^3.4.1:
   dependencies:
     performance-now "^2.1.0"
 
+random-id@0.0.2:
+  version "0.0.2"
+  resolved "https://registry.yarnpkg.com/random-id/-/random-id-0.0.2.tgz#291b7d76d39c914196ca4b19d83509e67cdf1590"
+  integrity sha1-KRt9dtOckUGWyksZ2DUJ5nzfFZA=
+
 randombytes@^2.0.0, randombytes@^2.0.1, randombytes@^2.0.5:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/randombytes/-/randombytes-2.1.0.tgz#df6f84372f0270dc65cdf6291349ab7a473d4f2a"
@@ -8436,7 +8495,7 @@ react-dev-utils@^10.2.1:
     strip-ansi "6.0.0"
     text-table "0.2.0"
 
-react-dom@^16.13.1:
+react-dom@^16.13.1, react-dom@^16.4.1:
   version "16.13.1"
   resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.13.1.tgz#c1bd37331a0486c078ee54c4740720993b2e0e7f"
   integrity sha512-81PIMmVLnCNLO/fFOQxdQkvEq/+Hfpv24XNJfpyZhTRfO0QcmQIF/PgCa1zCOj2w1hrn12MFLyaJ/G0+Mxtfag==
@@ -8516,7 +8575,22 @@ react-scripts@3.4.1:
   optionalDependencies:
     fsevents "2.1.2"
 
-react@^16.13.1:
+react-simple-chatbot@^0.6.1:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/react-simple-chatbot/-/react-simple-chatbot-0.6.1.tgz#30d08083e0b0283b78b84312df674e2cd6ac6703"
+  integrity sha512-q9y5GXwBvD+YvLgDVyDuZHYMkrcgIirm1FVV9RkR7XojPmbiX1lCzT6ib8U1M5zh42kTUBRnszXzkAGm9e0K8w==
+  dependencies:
+    eslint-config-prettier "^4.1.0"
+    eslint-plugin-prettier "^3.0.1"
+    flatted "^2.0.0"
+    onchange "^5.2.0"
+    prettier "^1.16.4"
+    prop-types "^15.6.0"
+    random-id "0.0.2"
+    react "^16.4.1"
+    react-dom "^16.4.1"
+
+react@^16.13.1, react@^16.4.1:
   version "16.13.1"
   resolved "https://registry.yarnpkg.com/react/-/react-16.13.1.tgz#2e818822f1a9743122c063d6410d85c1e3afe48e"
   integrity sha512-YMZQQq32xHLX0bz5Mnibv1/LHb3Sqzngu7xstSM+vrkE5Kzr9xE0yMByK5kMoTK30YVJE61WfbxIFFvfeDKT1w==
@@ -9679,7 +9753,7 @@ supports-color@^2.0.0:
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-2.0.0.tgz#535d045ce6b6363fa40117084629995e9df324c7"
   integrity sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=
 
-supports-color@^5.3.0:
+supports-color@^5.3.0, supports-color@^5.5.0:
   version "5.5.0"
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.5.0.tgz#e2e69a44ac8772f78a1ec0b35b689df6530efc8f"
   integrity sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==
@@ -9907,6 +9981,11 @@ tr46@^1.0.1:
   dependencies:
     punycode "^2.1.0"
 
+tree-kill@^1.2.0:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/tree-kill/-/tree-kill-1.2.2.tgz#4ca09a9092c88b73a7cdc5e8a01b507b0790a0cc"
+  integrity sha512-L0Orpi8qGpRG//Nd+H90vFB+3iHnue1zSSGmNOOCh1GLJ7rUKVwV2HvijphGQS2UmhUZewS9VgvxYIdgr+fG1A==
+
 ts-pnp@1.1.6, ts-pnp@^1.1.6:
   version "1.1.6"
   resolved "https://registry.yarnpkg.com/ts-pnp/-/ts-pnp-1.1.6.tgz#389a24396d425a0d3162e96d2b4638900fdc289a"
@@ -10361,9 +10440,9 @@ websocket-driver@>=0.5.1:
     websocket-extensions ">=0.1.1"
 
 websocket-extensions@>=0.1.1:
-  version "0.1.3"
-  resolved "https://registry.yarnpkg.com/websocket-extensions/-/websocket-extensions-0.1.3.tgz#5d2ff22977003ec687a4b87073dfbbac146ccf29"
-  integrity sha512-nqHUnMXmBzT0w570r2JpJxfiSD1IzoI+HGVdd3aZ0yNi3ngvQ4jv1dtHt5VGxfI2yj5yqImPhOK4vmIh2xMbGg==
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/websocket-extensions/-/websocket-extensions-0.1.4.tgz#7f8473bc839dfd87608adb95d7eb075211578a42"
+  integrity sha512-OqedPIGOfsDlo31UNwYbCFMSaO9m9G/0faIHj5/dZFDMFqPTcx6UwqyOy3COEaEOg/9VsGIpdqn62W5KhoKSpg==
 
 whatwg-encoding@^1.0.1, whatwg-encoding@^1.0.3, whatwg-encoding@^1.0.5:
   version "1.0.5"