Revert "Bump socket.io from 2.3.0 to 2.4.0" (#163)

This reverts commit adc27425d4.

package.json

     "debug": "4.3.1",
     "express": "4.17.1",
     "prettier": "2.2.1",
-    "socket.io": "2.4.0",
+    "socket.io": "2.3.0",
     "typescript": "4.1.3"
   },
   "license": "MIT",

yarn.lock

   resolved "https://registry.yarnpkg.com/arraybuffer.slice/-/arraybuffer.slice-0.0.7.tgz#3bbc4275dd584cc1b10809b89d4e8b63a69e7675"
   integrity sha512-wGUIVQXuehL5TCqQun8OW81jGzAWycqzFF8lFp+GOM5BXLYj3bKNsYC4daB7n6XjCqxQA/qgTJ+8ANR3acjrog==
 
+async-limiter@~1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.1.tgz#dd379e94f0db8310b08291f9d64c3209766617fd"
+  integrity sha512-csOlWGAcRFJaI6m+F2WKdnMKr4HhdhFVBk0H/QbJFMCr+uO2kwohwXQPxw/9OCxp05r5ghVBFSyioixx3gfkNQ==
+
 backo2@1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/backo2/-/backo2-1.0.2.tgz#31ab1ac8b129363463e35b3ebb69f4dfcfba7947"
   resolved "https://registry.yarnpkg.com/base64id/-/base64id-2.0.0.tgz#2770ac6bc47d312af97a8bf9a634342e0cd25cb6"
   integrity sha512-lGe34o6EHj9y3Kts9R4ZYs/Gr+6N7MCaMlIFA3F1R2O5/m7K06AxfSeO5530PEERE6/WyEg3lsuyw4GHlPZHog==
 
+better-assert@~1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/better-assert/-/better-assert-1.0.2.tgz#40866b9e1b9e0b55b481894311e68faffaebc522"
+  integrity sha1-QIZrnhueC1W0gYlDEeaPr/rrxSI=
+  dependencies:
+    callsite "1.0.0"
+
 blob@0.0.5:
   version "0.0.5"
   resolved "https://registry.yarnpkg.com/blob/-/blob-0.0.5.tgz#d680eeef25f8cd91ad533f5b01eed48e64caf683"
   resolved "https://registry.yarnpkg.com/bytes/-/bytes-3.1.0.tgz#f6cf7933a360e0588fa9fde85651cdc7f805d1f6"
   integrity sha512-zauLjrfCG+xvoyaqLoV8bLVXXNGC4JqlxFCutSDWA6fJrTo2ZuvLYTqZ7aHBLZSMOopbzwv8f+wZcVzfVTI2Dg==
 
+callsite@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/callsite/-/callsite-1.0.0.tgz#280398e5d664bd74038b6f0905153e6e8af1bc20"
+  integrity sha1-KAOY5dZkvXQDi28JBRU+borxvCA=
+
 component-bind@1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/component-bind/-/component-bind-1.0.0.tgz#00c608ab7dcd93897c0009651b1d3a8e1e73bbd1"
   resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.2.1.tgz#137918d6d78283f7df7a6b7c5a63e140e69425e6"
   integrity sha1-E3kY1teCg/ffemt8WmPhQOaUJeY=
 
-component-emitter@~1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.3.0.tgz#16e4070fba8ae29b679f2215853ee181ab2eabc0"
-  integrity sha512-Rd3se6QB+sO1TwqZjscQrurpEPIfO0/yYnSin6Q/rD3mOutHvUrCAhJub3r90uNb+SESBuE0QYoB90YdfatsRg==
-
 component-inherit@0.0.3:
   version "0.0.3"
   resolved "https://registry.yarnpkg.com/component-inherit/-/component-inherit-0.0.3.tgz#645fc4adf58b72b649d5cae65135619db26ff143"
   resolved "https://registry.yarnpkg.com/cookie-signature/-/cookie-signature-1.0.6.tgz#e303a882b342cc3ee8ca513a79999734dab3ae2c"
   integrity sha1-4wOogrNCzD7oylE6eZmXNNqzriw=
 
+cookie@0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.3.1.tgz#e7e0a1f9ef43b4c8ba925c5c5a96e806d16873bb"
+  integrity sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s=
+
 cookie@0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.4.0.tgz#beb437e7022b3b6d49019d088665303ebe9c14ba"
   integrity sha512-+Hp8fLp57wnUSt0tY0tHEXh4voZRDnoIrZPqlo3DPiI4y9lwg/jqx+1Om94/W6ZaPDOUbnjOt/99w66zk+l1Xg==
 
-cookie@~0.4.1:
-  version "0.4.1"
-  resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.4.1.tgz#afd713fe26ebd21ba95ceb61f9a8116e50a537d1"
-  integrity sha512-ZwrFkGJxUR3EIoXtO+yVE69Eb7KlixbaeAWfBQB9vVsNn/o+Yw69gBWSSDK825hQNdN+wF8zELf3dFNl/kxkUA==
-
 debug@2.6.9:
   version "2.6.9"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
   resolved "https://registry.yarnpkg.com/encodeurl/-/encodeurl-1.0.2.tgz#ad3ff4c86ec2d029322f5a02c3a9a606c95b3f59"
   integrity sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k=
 
-engine.io-client@~3.5.0:
-  version "3.5.0"
-  resolved "https://registry.yarnpkg.com/engine.io-client/-/engine.io-client-3.5.0.tgz#fc1b4d9616288ce4f2daf06dcf612413dec941c7"
-  integrity sha512-12wPRfMrugVw/DNyJk34GQ5vIVArEcVMXWugQGGuw2XxUSztFNmJggZmv8IZlLyEdnpO1QB9LkcjeWewO2vxtA==
+engine.io-client@~3.4.0:
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/engine.io-client/-/engine.io-client-3.4.0.tgz#82a642b42862a9b3f7a188f41776b2deab643700"
+  integrity sha512-a4J5QO2k99CM2a0b12IznnyQndoEvtA4UAldhGzKqnHf42I3Qs2W5SPnDvatZRcMaNZs4IevVicBPayxYt6FwA==
   dependencies:
-    component-emitter "~1.3.0"
+    component-emitter "1.2.1"
     component-inherit "0.0.3"
-    debug "~3.1.0"
+    debug "~4.1.0"
     engine.io-parser "~2.2.0"
     has-cors "1.1.0"
     indexof "0.0.1"
-    parseqs "0.0.6"
-    parseuri "0.0.6"
-    ws "~7.4.2"
+    parseqs "0.0.5"
+    parseuri "0.0.5"
+    ws "~6.1.0"
     xmlhttprequest-ssl "~1.5.4"
     yeast "0.1.2"
 
     blob "0.0.5"
     has-binary2 "~1.0.2"
 
-engine.io@~3.5.0:
-  version "3.5.0"
-  resolved "https://registry.yarnpkg.com/engine.io/-/engine.io-3.5.0.tgz#9d6b985c8a39b1fe87cd91eb014de0552259821b"
-  integrity sha512-21HlvPUKaitDGE4GXNtQ7PLP0Sz4aWLddMPw2VTyFz1FVZqu/kZsJUO8WNpKuE/OCL7nkfRaOui2ZCJloGznGA==
+engine.io@~3.4.0:
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/engine.io/-/engine.io-3.4.0.tgz#3a962cc4535928c252759a00f98519cb46c53ff3"
+  integrity sha512-XCyYVWzcHnK5cMz7G4VTu2W7zJS7SM1QkcelghyIk/FmobWBtXE7fwhBusEKvCSqc3bMh8fNFMlUkCKTFRxH2w==
   dependencies:
     accepts "~1.3.4"
     base64id "2.0.0"
-    cookie "~0.4.1"
+    cookie "0.3.1"
     debug "~4.1.0"
     engine.io-parser "~2.2.0"
-    ws "~7.4.2"
+    ws "^7.1.2"
 
 escape-html@~1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/negotiator/-/negotiator-0.6.2.tgz#feacf7ccf525a77ae9634436a64883ffeca346fb"
   integrity sha512-hZXc7K2e+PgeI1eDBe/10Ard4ekbfrrqG8Ep+8Jmf4JID2bNg7NvCPOZN+kfF574pFQI7mum2AUqDidoKqcTOw==
 
+object-component@0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/object-component/-/object-component-0.0.3.tgz#f0c69aa50efc95b866c186f400a33769cb2f1291"
+  integrity sha1-8MaapQ78lbhmwYb0AKM3acsvEpE=
+
 on-finished@~2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/on-finished/-/on-finished-2.3.0.tgz#20f1336481b083cd75337992a16971aa2d906947"
   dependencies:
     ee-first "1.1.1"
 
-parseqs@0.0.6:
-  version "0.0.6"
-  resolved "https://registry.yarnpkg.com/parseqs/-/parseqs-0.0.6.tgz#8e4bb5a19d1cdc844a08ac974d34e273afa670d5"
-  integrity sha512-jeAGzMDbfSHHA091hr0r31eYfTig+29g3GKKE/PPbEQ65X0lmMwlEoqmhzu0iztID5uJpZsFlUPDP8ThPL7M8w==
+parseqs@0.0.5:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/parseqs/-/parseqs-0.0.5.tgz#d5208a3738e46766e291ba2ea173684921a8b89d"
+  integrity sha1-1SCKNzjkZ2bikbouoXNoSSGouJ0=
+  dependencies:
+    better-assert "~1.0.0"
 
-parseuri@0.0.6:
-  version "0.0.6"
-  resolved "https://registry.yarnpkg.com/parseuri/-/parseuri-0.0.6.tgz#e1496e829e3ac2ff47f39a4dd044b32823c4a25a"
-  integrity sha512-AUjen8sAkGgao7UyCX6Ahv0gIK2fABKmYjvP4xmy5JaKvcbTRueIqIPHLAfq30xJddqSE033IOMUSOMCcK3Sow==
+parseuri@0.0.5:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/parseuri/-/parseuri-0.0.5.tgz#80204a50d4dbb779bfdc6ebe2778d90e4bce320a"
+  integrity sha1-gCBKUNTbt3m/3G6+J3jZDkvOMgo=
+  dependencies:
+    better-assert "~1.0.0"
 
 parseurl@~1.3.3:
   version "1.3.3"
   resolved "https://registry.yarnpkg.com/socket.io-adapter/-/socket.io-adapter-1.1.2.tgz#ab3f0d6f66b8fc7fca3959ab5991f82221789be9"
   integrity sha512-WzZRUj1kUjrTIrUKpZLEzFZ1OLj5FwLlAFQs9kuZJzJi5DKdU7FsWc36SNmA8iDOtwBQyT8FkrriRM8vXLYz8g==
 
-socket.io-client@2.4.0:
-  version "2.4.0"
-  resolved "https://registry.yarnpkg.com/socket.io-client/-/socket.io-client-2.4.0.tgz#aafb5d594a3c55a34355562fc8aea22ed9119a35"
-  integrity sha512-M6xhnKQHuuZd4Ba9vltCLT9oa+YvTsP8j9NcEiLElfIg8KeYPyhWOes6x4t+LTAC8enQbE/995AdTem2uNyKKQ==
+socket.io-client@2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/socket.io-client/-/socket.io-client-2.3.0.tgz#14d5ba2e00b9bcd145ae443ab96b3f86cbcc1bb4"
+  integrity sha512-cEQQf24gET3rfhxZ2jJ5xzAOo/xhZwK+mOqtGRg5IowZsMgwvHwnf/mCRapAAkadhM26y+iydgwsXGObBB5ZdA==
   dependencies:
     backo2 "1.0.2"
+    base64-arraybuffer "0.1.5"
     component-bind "1.0.0"
-    component-emitter "~1.3.0"
-    debug "~3.1.0"
-    engine.io-client "~3.5.0"
+    component-emitter "1.2.1"
+    debug "~4.1.0"
+    engine.io-client "~3.4.0"
     has-binary2 "~1.0.2"
+    has-cors "1.1.0"
     indexof "0.0.1"
-    parseqs "0.0.6"
-    parseuri "0.0.6"
+    object-component "0.0.3"
+    parseqs "0.0.5"
+    parseuri "0.0.5"
     socket.io-parser "~3.3.0"
     to-array "0.1.4"
 
     debug "~4.1.0"
     isarray "2.0.1"
 
-socket.io@2.4.0:
-  version "2.4.0"
-  resolved "https://registry.yarnpkg.com/socket.io/-/socket.io-2.4.0.tgz#01030a2727bd8eb2e85ea96d69f03692ee53d47e"
-  integrity sha512-9UPJ1UTvKayuQfVv2IQ3k7tCQC/fboDyIK62i99dAQIyHKaBsNdTpwHLgKJ6guRWxRtC9H+138UwpaGuQO9uWQ==
+socket.io@2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/socket.io/-/socket.io-2.3.0.tgz#cd762ed6a4faeca59bc1f3e243c0969311eb73fb"
+  integrity sha512-2A892lrj0GcgR/9Qk81EaY2gYhCBxurV0PfmmESO6p27QPrUK1J3zdns+5QPqvUYK2q657nSj0guoIil9+7eFg==
   dependencies:
     debug "~4.1.0"
-    engine.io "~3.5.0"
+    engine.io "~3.4.0"
     has-binary2 "~1.0.2"
     socket.io-adapter "~1.1.0"
-    socket.io-client "2.4.0"
+    socket.io-client "2.3.0"
     socket.io-parser "~3.4.0"
 
 "statuses@>= 1.5.0 < 2", statuses@~1.5.0:
   resolved "https://registry.yarnpkg.com/vary/-/vary-1.1.2.tgz#2299f02c6ded30d4a5961b0b9f74524a18f634fc"
   integrity sha1-IpnwLG3tMNSllhsLn3RSShj2NPw=
 
-ws@~7.4.2:
-  version "7.4.2"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-7.4.2.tgz#782100048e54eb36fe9843363ab1c68672b261dd"
-  integrity sha512-T4tewALS3+qsrpGI/8dqNMLIVdq/g/85U98HPMa6F0m6xTbvhXU6RCQLqPH3+SlomNV/LdY6RXEbBpMH6EOJnA==
+ws@^7.1.2:
+  version "7.2.3"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-7.2.3.tgz#a5411e1fb04d5ed0efee76d26d5c46d830c39b46"
+  integrity sha512-HTDl9G9hbkNDk98naoR/cHDws7+EyYMOdL1BmjsZXRUjf7d+MficC4B7HLUPlSiho0vg+CWKrGIt/VJBd1xunQ==
+
+ws@~6.1.0:
+  version "6.1.4"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-6.1.4.tgz#5b5c8800afab925e94ccb29d153c8d02c1776ef9"
+  integrity sha512-eqZfL+NE/YQc1/ZynhojeV8q+H050oR8AZ2uIev7RU10svA9ZnJUddHcOUZTJLinZ9yEfdA2kSATS2qZK5fhJA==
+  dependencies:
+    async-limiter "~1.0.0"
 
 xmlhttprequest-ssl@~1.5.4:
   version "1.5.5"