diff --git a/back/package.json b/back/package.json
index 09d6794a..a6ff7319 100644
--- a/back/package.json
+++ b/back/package.json
@@ -38,23 +38,17 @@
   "homepage": "https://github.com/thecodingmachine/workadventure#readme",
   "dependencies": {
     "axios": "^0.21.1",
-    "body-parser": "^1.19.0",
     "busboy": "^0.3.1",
     "circular-json": "^0.5.9",
     "debug": "^4.3.1",
     "generic-type-guard": "^3.2.0",
     "google-protobuf": "^3.13.0",
     "grpc": "^1.24.4",
-    "http-status-codes": "^1.4.0",
-    "iterall": "^1.3.0",
     "jsonwebtoken": "^8.5.1",
     "mkdirp": "^1.0.4",
-    "multer": "^1.4.2",
     "prom-client": "^12.0.0",
     "query-string": "^6.13.3",
     "systeminformation": "^4.31.1",
-    "ts-node-dev": "^1.0.0-pre.44",
-    "typescript": "^3.8.3",
     "uWebSockets.js": "uNetworking/uWebSockets.js#v18.5.0",
     "uuidv4": "^6.0.7"
   },
@@ -71,6 +65,8 @@
     "@typescript-eslint/eslint-plugin": "^2.26.0",
     "@typescript-eslint/parser": "^2.26.0",
     "eslint": "^6.8.0",
-    "jasmine": "^3.5.0"
+    "jasmine": "^3.5.0",
+    "ts-node-dev": "^1.0.0-pre.44",
+    "typescript": "^3.8.3"
   }
 }
diff --git a/back/yarn.lock b/back/yarn.lock
index 8af760c8..3ac4b0a8 100644
--- a/back/yarn.lock
+++ b/back/yarn.lock
@@ -257,11 +257,6 @@ anymatch@~3.1.1:
     normalize-path "^3.0.0"
     picomatch "^2.0.4"
 
-append-field@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/append-field/-/append-field-1.0.0.tgz#1e3440e915f0b1203d23748e78edd7b9b5b43e56"
-  integrity sha1-HjRA6RXwsSA9I3SOeO3XubW0PlY=
-
 aproba@^1.0.3:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/aproba/-/aproba-1.2.0.tgz#6802e6264efd18c790a1b0d517f0f2627bf2c94a"
@@ -370,22 +365,6 @@ bintrees@1.0.1:
   resolved "https://registry.yarnpkg.com/bintrees/-/bintrees-1.0.1.tgz#0e655c9b9c2435eaab68bf4027226d2b55a34524"
   integrity sha1-DmVcm5wkNeqraL9AJyJtK1WjRSQ=
 
-body-parser@^1.19.0:
-  version "1.19.0"
-  resolved "https://registry.yarnpkg.com/body-parser/-/body-parser-1.19.0.tgz#96b2709e57c9c4e09a6fd66a8fd979844f69f08a"
-  integrity sha512-dhEPs72UPbDnAQJ9ZKMNTP6ptJaionhP5cBb541nXPlW60Jepo9RV/a4fX4XWW9CuFNK22krhrj1+rgzifNCsw==
-  dependencies:
-    bytes "3.1.0"
-    content-type "~1.0.4"
-    debug "2.6.9"
-    depd "~1.1.2"
-    http-errors "1.7.2"
-    iconv-lite "0.4.24"
-    on-finished "~2.3.0"
-    qs "6.7.0"
-    raw-body "2.4.0"
-    type-is "~1.6.17"
-
 brace-expansion@^1.1.7:
   version "1.1.11"
   resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
@@ -427,14 +406,6 @@ buffer-from@^1.0.0:
   resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
   integrity sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==
 
-busboy@^0.2.11:
-  version "0.2.14"
-  resolved "https://registry.yarnpkg.com/busboy/-/busboy-0.2.14.tgz#6c2a622efcf47c57bbbe1e2a9c37ad36c7925453"
-  integrity sha1-bCpiLvz0fFe7vh4qnDetNseSVFM=
-  dependencies:
-    dicer "0.2.5"
-    readable-stream "1.1.x"
-
 busboy@^0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/busboy/-/busboy-0.3.1.tgz#170899274c5bf38aae27d5c62b71268cd585fd1b"
@@ -449,11 +420,6 @@ bytebuffer@~5:
   dependencies:
     long "~3"
 
-bytes@3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/bytes/-/bytes-3.1.0.tgz#f6cf7933a360e0588fa9fde85651cdc7f805d1f6"
-  integrity sha512-zauLjrfCG+xvoyaqLoV8bLVXXNGC4JqlxFCutSDWA6fJrTo2ZuvLYTqZ7aHBLZSMOopbzwv8f+wZcVzfVTI2Dg==
-
 cache-base@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/cache-base/-/cache-base-1.0.1.tgz#0a7f46416831c8b662ee36fe4e7c59d76f666ab2"
@@ -622,26 +588,11 @@ concat-map@0.0.1:
   resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
   integrity sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=
 
-concat-stream@^1.5.2:
-  version "1.6.2"
-  resolved "https://registry.yarnpkg.com/concat-stream/-/concat-stream-1.6.2.tgz#904bdf194cd3122fc675c77fc4ac3d4ff0fd1a34"
-  integrity sha512-27HBghJxjiZtIk3Ycvn/4kbJk/1uZuJFfuPEns6LaEvpvG1f0hTea8lilrouyo9mVc2GWdcEZ8OLoGmSADlrCw==
-  dependencies:
-    buffer-from "^1.0.0"
-    inherits "^2.0.3"
-    readable-stream "^2.2.2"
-    typedarray "^0.0.6"
-
 console-control-strings@^1.0.0, console-control-strings@~1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/console-control-strings/-/console-control-strings-1.1.0.tgz#3d7cf4464db6446ea644bf4b39507f9851008e8e"
   integrity sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=
 
-content-type@~1.0.4:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/content-type/-/content-type-1.0.4.tgz#e138cc75e040c727b1966fe5e5f8c9aee256fe3b"
-  integrity sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA==
-
 copy-descriptor@^0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/copy-descriptor/-/copy-descriptor-0.1.1.tgz#676f6eb3c39997c2ee1ac3a924fd6124748f578d"
@@ -678,7 +629,7 @@ dateformat@~1.0.4-1.2.3:
     get-stdin "^4.0.1"
     meow "^3.3.0"
 
-debug@2.6.9, debug@^2.2.0, debug@^2.3.3:
+debug@^2.2.0, debug@^2.3.3:
   version "2.6.9"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
   integrity sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==
@@ -753,24 +704,11 @@ delegates@^1.0.0:
   resolved "https://registry.yarnpkg.com/delegates/-/delegates-1.0.0.tgz#84c6e159b81904fdca59a0ef44cd870d31250f9a"
   integrity sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=
 
-depd@~1.1.2:
-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/depd/-/depd-1.1.2.tgz#9bcd52e14c097763e749b274c4346ed2e560b5a9"
-  integrity sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak=
-
 detect-libc@^1.0.2:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/detect-libc/-/detect-libc-1.0.3.tgz#fa137c4bd698edf55cd5cd02ac559f91a4c4ba9b"
   integrity sha1-+hN8S9aY7fVc1c0CrFWfkaTEups=
 
-dicer@0.2.5:
-  version "0.2.5"
-  resolved "https://registry.yarnpkg.com/dicer/-/dicer-0.2.5.tgz#5996c086bb33218c812c090bddc09cd12facb70f"
-  integrity sha1-WZbAhrszIYyBLAkL3cCc0S+stw8=
-  dependencies:
-    readable-stream "1.1.x"
-    streamsearch "0.1.2"
-
 dicer@0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/dicer/-/dicer-0.3.0.tgz#eacd98b3bfbf92e8ab5c2fdb71aaac44bb06b872"
@@ -804,11 +742,6 @@ ecdsa-sig-formatter@1.0.11:
   dependencies:
     safe-buffer "^5.0.1"
 
-ee-first@1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
-  integrity sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0=
-
 emoji-regex@^7.0.1:
   version "7.0.3"
   resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-7.0.3.tgz#933a04052860c85e83c122479c4748a8e4c72156"
@@ -1255,28 +1188,12 @@ hosted-git-info@^2.1.4:
   resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.8.9.tgz#dffc0bf9a21c02209090f2aa69429e1414daf3f9"
   integrity sha512-mxIDAb9Lsm6DoOJ7xH+5+X4y1LU/4Hi50L9C5sIswK3JzULS4bwk1FvjdBgvYR4bzT4tuUQiC15FE2f5HbLvYw==
 
-http-errors@1.7.2:
-  version "1.7.2"
-  resolved "https://registry.yarnpkg.com/http-errors/-/http-errors-1.7.2.tgz#4f5029cf13239f31036e5b2e55292bcfbcc85c8f"
-  integrity sha512-uUQBt3H/cSIVfch6i1EuPNy/YsRSOUBXTVfZ+yR7Zjez3qjBz6i9+i4zjNaoqcoFVI4lQJ5plg63TvGfRSDCRg==
-  dependencies:
-    depd "~1.1.2"
-    inherits "2.0.3"
-    setprototypeof "1.1.1"
-    statuses ">= 1.5.0 < 2"
-    toidentifier "1.0.0"
-
 http-status-codes@*:
   version "2.1.4"
   resolved "https://registry.yarnpkg.com/http-status-codes/-/http-status-codes-2.1.4.tgz#453d99b4bd9424254c4f6a9a3a03715923052798"
   integrity sha512-MZVIsLKGVOVE1KEnldppe6Ij+vmemMuApDfjhVSLzyYP+td0bREEYyAoIw9yFePoBXManCuBqmiNP5FqJS5Xkg==
 
-http-status-codes@^1.4.0:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/http-status-codes/-/http-status-codes-1.4.0.tgz#6e4c15d16ff3a9e2df03b89f3a55e1aae05fb477"
-  integrity sha512-JrT3ua+WgH8zBD3HEJYbeEgnuQaAnUeRRko/YojPAJjGmIfGD3KPU/asLdsLwKjfxOmQe5nXMQ0pt/7MyapVbQ==
-
-iconv-lite@0.4.24, iconv-lite@^0.4.24, iconv-lite@^0.4.4:
+iconv-lite@^0.4.24, iconv-lite@^0.4.4:
   version "0.4.24"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.24.tgz#2022b4b25fbddc21d2f524974a474aafe733908b"
   integrity sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==
@@ -1323,16 +1240,11 @@ inflight@^1.0.4:
     once "^1.3.0"
     wrappy "1"
 
-inherits@2, inherits@^2.0.3, inherits@~2.0.1, inherits@~2.0.3:
+inherits@2, inherits@~2.0.3:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
   integrity sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==
 
-inherits@2.0.3:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
-  integrity sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=
-
 ini@~1.3.0:
   version "1.3.7"
   resolved "https://registry.yarnpkg.com/ini/-/ini-1.3.7.tgz#a09363e1911972ea16d7a8851005d84cf09a9a84"
@@ -1507,11 +1419,6 @@ is-windows@^1.0.2:
   resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.2.tgz#d1850eb9791ecd18e6182ce12a30f396634bb19d"
   integrity sha512-eXK1UInq2bPmjyX6e3VHIzMLobc4J94i4AWn+Hpq3OU5KkrRC96OAcR3PRJ/pGu6m8TRnBHP9dkXQVsT/COVIA==
 
-isarray@0.0.1:
-  version "0.0.1"
-  resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
-  integrity sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8=
-
 isarray@1.0.0, isarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
@@ -1534,11 +1441,6 @@ isobject@^3.0.0, isobject@^3.0.1:
   resolved "https://registry.yarnpkg.com/isobject/-/isobject-3.0.1.tgz#4e431e92b11a9731636aa1f9c8d1ccbcfdab78df"
   integrity sha1-TkMekrEalzFjaqH5yNHMvP2reN8=
 
-iterall@^1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/iterall/-/iterall-1.3.0.tgz#afcb08492e2915cbd8a0884eb93a8c94d0d72fea"
-  integrity sha512-QZ9qOMdF+QLHxy1QIpUHUU1D5pS2CG2P69LF6L6CPjPYA/XMOmKV3PZpawHoAjHNyB0swdVTRxdYT4tbBbxqwg==
-
 jasmine-core@~3.6.0:
   version "3.6.0"
   resolved "https://registry.yarnpkg.com/jasmine-core/-/jasmine-core-3.6.0.tgz#491f3bb23941799c353ceb7a45b38a950ebc5a20"
@@ -1743,11 +1645,6 @@ map-visit@^1.0.0:
   dependencies:
     object-visit "^1.0.0"
 
-media-typer@0.3.0:
-  version "0.3.0"
-  resolved "https://registry.yarnpkg.com/media-typer/-/media-typer-0.3.0.tgz#8710d7af0aa626f8fffa1ce00168545263255748"
-  integrity sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g=
-
 meow@^3.3.0:
   version "3.7.0"
   resolved "https://registry.yarnpkg.com/meow/-/meow-3.7.0.tgz#72cb668b425228290abbfa856892587308a801fb"
@@ -1788,18 +1685,6 @@ micromatch@^3.1.10:
     snapdragon "^0.8.1"
     to-regex "^3.0.2"
 
-mime-db@1.44.0:
-  version "1.44.0"
-  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.44.0.tgz#fa11c5eb0aca1334b4233cb4d52f10c5a6272f92"
-  integrity sha512-/NOTfLrsPBVeH7YtFPgsVWveuL+4SjjYxaQ1xtM1KMFj7HdxlBlxeyNLzhyJVx7r4rZGJAZ/6lkKCitSc/Nmpg==
-
-mime-types@~2.1.24:
-  version "2.1.27"
-  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.27.tgz#47949f98e279ea53119f5722e0f34e529bec009f"
-  integrity sha512-JIhqnCasI9yD+SsmkquHBxTSEuZdQX5BuQnS2Vc7puQQQ+8yiP5AY5uWhpdv4YL4VM5c6iliiYWPgJ/nJQLp7w==
-  dependencies:
-    mime-db "1.44.0"
-
 mimic-fn@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-2.1.0.tgz#7ed2c2ccccaf84d3ffcb7a69b57711fc2083401b"
@@ -1862,20 +1747,6 @@ ms@2.1.2, ms@^2.1.1:
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
   integrity sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==
 
-multer@^1.4.2:
-  version "1.4.2"
-  resolved "https://registry.yarnpkg.com/multer/-/multer-1.4.2.tgz#2f1f4d12dbaeeba74cb37e623f234bf4d3d2057a"
-  integrity sha512-xY8pX7V+ybyUpbYMxtjM9KAiD9ixtg5/JkeKUTD6xilfDv0vzzOFcCp4Ljb1UU3tSOM3VTZtKo63OmzOrGi3Cg==
-  dependencies:
-    append-field "^1.0.0"
-    busboy "^0.2.11"
-    concat-stream "^1.5.2"
-    mkdirp "^0.5.1"
-    object-assign "^4.1.1"
-    on-finished "^2.3.0"
-    type-is "^1.6.4"
-    xtend "^4.0.0"
-
 mute-stream@0.0.8:
   version "0.0.8"
   resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.8.tgz#1630c42b2251ff81e2a283de96a5497ea92e5e0d"
@@ -1997,7 +1868,7 @@ number-is-nan@^1.0.0:
   resolved "https://registry.yarnpkg.com/number-is-nan/-/number-is-nan-1.0.1.tgz#097b602b53422a522c1afb8790318336941a011d"
   integrity sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=
 
-object-assign@^4.0.1, object-assign@^4.1.0, object-assign@^4.1.1:
+object-assign@^4.0.1, object-assign@^4.1.0:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
   integrity sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=
@@ -2025,13 +1896,6 @@ object.pick@^1.3.0:
   dependencies:
     isobject "^3.0.1"
 
-on-finished@^2.3.0, on-finished@~2.3.0:
-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/on-finished/-/on-finished-2.3.0.tgz#20f1336481b083cd75337992a16971aa2d906947"
-  integrity sha1-IPEzZIGwg811M3mSoWlxqi2QaUc=
-  dependencies:
-    ee-first "1.1.1"
-
 once@^1.3.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
@@ -2207,11 +2071,6 @@ punycode@^2.1.0:
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
   integrity sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==
 
-qs@6.7.0:
-  version "6.7.0"
-  resolved "https://registry.yarnpkg.com/qs/-/qs-6.7.0.tgz#41dc1a015e3d581f1621776be31afb2876a9b1bc"
-  integrity sha512-VCdBRNFTX1fyE7Nb6FYoURo/SPe62QCaAyzJvUjwRaIsc+NePBEniHlvxFmmX56+HZphIGtV0XeCirBtpDrTyQ==
-
 query-string@^6.13.3:
   version "6.13.4"
   resolved "https://registry.yarnpkg.com/query-string/-/query-string-6.13.4.tgz#b35a9a3bd4955bce55f94feb0e819b3d0be6f66f"
@@ -2221,16 +2080,6 @@ query-string@^6.13.3:
     split-on-first "^1.0.0"
     strict-uri-encode "^2.0.0"
 
-raw-body@2.4.0:
-  version "2.4.0"
-  resolved "https://registry.yarnpkg.com/raw-body/-/raw-body-2.4.0.tgz#a1ce6fb9c9bc356ca52e89256ab59059e13d0332"
-  integrity sha512-4Oz8DUIwdvoa5qMJelxipzi/iJIi40O5cGV1wNYp5hvZP8ZN0T+jiNkL0QepXs+EsQ9XJ8ipEDoiH70ySUJP3Q==
-  dependencies:
-    bytes "3.1.0"
-    http-errors "1.7.2"
-    iconv-lite "0.4.24"
-    unpipe "1.0.0"
-
 rc@^1.2.7:
   version "1.2.8"
   resolved "https://registry.yarnpkg.com/rc/-/rc-1.2.8.tgz#cd924bf5200a075b83c188cd6b9e211b7fc0d3ed"
@@ -2258,17 +2107,7 @@ read-pkg@^1.0.0:
     normalize-package-data "^2.3.2"
     path-type "^1.0.0"
 
-readable-stream@1.1.x:
-  version "1.1.14"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-1.1.14.tgz#7cf4c54ef648e3813084c636dd2079e166c081d9"
-  integrity sha1-fPTFTvZI44EwhMY23SB54WbAgdk=
-  dependencies:
-    core-util-is "~1.0.0"
-    inherits "~2.0.1"
-    isarray "0.0.1"
-    string_decoder "~0.10.x"
-
-readable-stream@^2.0.6, readable-stream@^2.2.2:
+readable-stream@^2.0.6:
   version "2.3.7"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.7.tgz#1eca1cf711aef814c04f62252a36a62f6cb23b57"
   integrity sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==
@@ -2444,11 +2283,6 @@ set-value@^2.0.0, set-value@^2.0.1:
     is-plain-object "^2.0.3"
     split-string "^3.0.1"
 
-setprototypeof@1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/setprototypeof/-/setprototypeof-1.1.1.tgz#7e95acb24aa92f5885e0abef5ba131330d4ae683"
-  integrity sha512-JvdAWfbXeIGaZ9cILp38HntZSFSo3mWg6xGcJJsd+d4aRMOqauag1C63dJfDw7OaMYwEbHMOxEZ1lqVRYP2OAw==
-
 shebang-command@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/shebang-command/-/shebang-command-1.2.0.tgz#44aac65b695b03398968c39f363fee5deafdf1ea"
@@ -2590,11 +2424,6 @@ static-extend@^0.1.1:
     define-property "^0.2.5"
     object-copy "^0.1.0"
 
-"statuses@>= 1.5.0 < 2":
-  version "1.5.0"
-  resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.5.0.tgz#161c7dac177659fd9811f43771fa99381478628c"
-  integrity sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow=
-
 streamsearch@0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/streamsearch/-/streamsearch-0.1.2.tgz#808b9d0e56fc273d809ba57338e929919a1a9f1a"
@@ -2640,11 +2469,6 @@ string-width@^4.1.0:
     is-fullwidth-code-point "^3.0.0"
     strip-ansi "^6.0.0"
 
-string_decoder@~0.10.x:
-  version "0.10.31"
-  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-0.10.31.tgz#62e203bc41766c6c28c9fc84301dab1c5310fa94"
-  integrity sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=
-
 string_decoder@~1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.1.1.tgz#9cf1611ba62685d7030ae9e4ba34149c3af03fc8"
@@ -2807,11 +2631,6 @@ to-regex@^3.0.1, to-regex@^3.0.2:
     regex-not "^1.0.2"
     safe-regex "^1.1.0"
 
-toidentifier@1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/toidentifier/-/toidentifier-1.0.0.tgz#7e1be3470f1e77948bc43d94a3c8f4d7752ba553"
-  integrity sha512-yaOH/Pk/VEhBWWTlhI+qXxDFXlejDGcQipMlyxda9nthulaxLZUNcUqFxokp0vcYnvteJln5FNQDRrxj3YcbVw==
-
 tree-kill@^1.2.2:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/tree-kill/-/tree-kill-1.2.2.tgz#4ca09a9092c88b73a7cdc5e8a01b507b0790a0cc"
@@ -2889,19 +2708,6 @@ type-fest@^0.8.1:
   resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.8.1.tgz#09e249ebde851d3b1e48d27c105444667f17b83d"
   integrity sha512-4dbzIzqvjtgiM5rw1k5rEHtBANKmdudhGyBEajN01fEyhaAIhsoKNy6y7+IN93IfpFtwY9iqi7kD+xwKhQsNJA==
 
-type-is@^1.6.4, type-is@~1.6.17:
-  version "1.6.18"
-  resolved "https://registry.yarnpkg.com/type-is/-/type-is-1.6.18.tgz#4e552cd05df09467dcbc4ef739de89f2cf37c131"
-  integrity sha512-TkRKr9sUTxEH8MdfuCSP7VizJyzRNMjj2J2do2Jr3Kym598JVdEksuzPQCnlFPW4ky9Q+iA+ma9BGm06XQBy8g==
-  dependencies:
-    media-typer "0.3.0"
-    mime-types "~2.1.24"
-
-typedarray@^0.0.6:
-  version "0.0.6"
-  resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
-  integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
-
 typescript@^3.8.3:
   version "3.9.7"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.7.tgz#98d600a5ebdc38f40cb277522f12dc800e9e25fa"
@@ -2921,11 +2727,6 @@ union-value@^1.0.0:
     is-extendable "^0.1.1"
     set-value "^2.0.1"
 
-unpipe@1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/unpipe/-/unpipe-1.0.0.tgz#b2bf4ee8514aae6165b4817829d21b2ef49904ec"
-  integrity sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw=
-
 unset-value@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/unset-value/-/unset-value-1.0.0.tgz#8376873f7d2335179ffb1e6fc3a8ed0dfc8ab559"
diff --git a/benchmark/package-lock.json b/benchmark/package-lock.json
index ba52caf2..2d25c58a 100644
--- a/benchmark/package-lock.json
+++ b/benchmark/package-lock.json
@@ -688,9 +688,9 @@
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
     "ws": {
-      "version": "7.3.1",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-7.3.1.tgz",
-      "integrity": "sha512-D3RuNkynyHmEJIpD2qrgVkc9DQ23OrN/moAwZX4L8DfvszsJxpjQuUq3LMx6HoYji9fbIOBY18XWBsAux1ZZUA=="
+      "version": "7.4.6",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.6.tgz",
+      "integrity": "sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A=="
     },
     "xtend": {
       "version": "4.0.2",
diff --git a/benchmark/package.json b/benchmark/package.json
index b0cd6a23..586e97e6 100644
--- a/benchmark/package.json
+++ b/benchmark/package.json
@@ -24,7 +24,7 @@
     "@types/ws": "^7.2.6",
     "ts-node-dev": "^1.0.0-pre.62",
     "typescript": "^4.0.2",
-    "ws": "^7.3.1"
+    "ws": "^7.4.6"
   },
   "devDependencies": {}
 }
diff --git a/benchmark/yarn.lock b/benchmark/yarn.lock
index a7f9ec0d..8dcffe52 100644
--- a/benchmark/yarn.lock
+++ b/benchmark/yarn.lock
@@ -515,9 +515,9 @@ wrappy@1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
 
-ws@^7.3.1:
-  version "7.3.1"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-7.3.1.tgz#d0547bf67f7ce4f12a72dfe31262c68d7dc551c8"
+ws@^7.4.6:
+  version "7.4.6"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-7.4.6.tgz#5654ca8ecdeee47c33a9a4bf6d28e2be2980377c"
 
 xtend@^4.0.0:
   version "4.0.2"
diff --git a/docs/maps/api-chat.md b/docs/maps/api-chat.md
new file mode 100644
index 00000000..49a40f97
--- /dev/null
+++ b/docs/maps/api-chat.md
@@ -0,0 +1,37 @@
+{.section-title.accent.text-primary}
+# API Chat functions reference
+
+### Sending a message in the chat
+
+```
+WA.chat.sendChatMessage(message: string, author: string): void
+```
+
+Sends a message in the chat. The message is only visible in the browser of the current user.
+
+*   **message**: the message to be displayed in the chat
+*   **author**: the name displayed for the author of the message. It does not have to be a real user.
+
+Example:
+
+```javascript
+WA.chat.sendChatMessage('Hello world', 'Mr Robot');
+```
+
+### Listening to messages from the chat
+
+```javascript
+WA.chat.onChatMessage(callback: (message: string) => void): void
+```
+
+Listens to messages typed by the current user and calls the callback. Messages from other users in the chat cannot be listened to.
+
+*   **callback**: the function that will be called when a message is received. It contains the message typed by the user.
+
+Example:
+
+```javascript
+WA.chat.onChatMessage((message => {
+    console.log('The user typed a message', message);
+}));
+```
diff --git a/docs/maps/api-controls.md b/docs/maps/api-controls.md
new file mode 100644
index 00000000..dcb0f17b
--- /dev/null
+++ b/docs/maps/api-controls.md
@@ -0,0 +1,29 @@
+{.section-title.accent.text-primary}
+# API Controls functions Reference
+
+### Disabling / restoring controls
+
+```
+WA.controls.disablePlayerControls(): void
+WA.controls.restorePlayerControls(): void
+```
+
+These 2 methods can be used to completely disable player controls and to enable them again.
+
+When controls are disabled, the user cannot move anymore using keyboard input. This can be useful in a "First Time User Experience" part, to display an important message to a user before letting him/her move again.
+
+Example:
+
+```javascript
+WA.room.onEnterZone('myZone', () => {
+    WA.controls.disablePlayerControls();
+    WA.ui.openPopup("popupRectangle", 'This is an imporant message!', [{
+        label: "Got it!",
+        className: "primary",
+        callback: (popup) => {
+            WA.controls.restorePlayerControls();
+            popup.close();
+        }
+    }]);
+});
+```
diff --git a/docs/maps/api-deprecated.md b/docs/maps/api-deprecated.md
new file mode 100644
index 00000000..930caebe
--- /dev/null
+++ b/docs/maps/api-deprecated.md
@@ -0,0 +1,20 @@
+{.section-title.accent.text-primary}
+# API Reference - Deprecated functions
+
+The list of functions below is **deprecated**. You should not use those but. use the replacement functions.
+
+- Method `WA.sendChatMessage` is deprecated. It has been renamed to `WA.chat.sendChatMessage`.
+- Method `WA.disablePlayerControls` is deprecated. It has been renamed to `WA.controls.disablePlayerControls`.
+- Method `WA.restorePlayerControls` is deprecated. It has been renamed to `WA.controls.restorePlayerControls`.
+- Method `WA.displayBubble` is deprecated. It has been renamed to `WA.ui.displayBubble`.
+- Method `WA.removeBubble` is deprecated. It has been renamed to `WA.ui.removeBubble`.
+- Method `WA.openTab` is deprecated. It has been renamed to `WA.nav.openTab`.
+- Method `WA.loadSound` is deprecated. It has been renamed to `WA.sound.loadSound`.
+- Method `WA.goToPage` is deprecated. It has been renamed to `WA.nav.goToPage`.
+- Method `WA.goToRoom` is deprecated. It has been renamed to `WA.nav.goToRoom`.
+- Method `WA.openCoWebSite` is deprecated. It has been renamed to `WA.nav.openCoWebSite`.
+- Method `WA.closeCoWebSite` is deprecated. It has been renamed to `WA.nav.closeCoWebSite`.
+- Method `WA.openPopup` is deprecated. It has been renamed to `WA.ui.openPopup`.
+- Method `WA.onChatMessage` is deprecated. It has been renamed to `WA.chat.onChatMessage`.
+- Method `WA.onEnterZone` is deprecated. It has been renamed to `WA.room.onEnterZone`.
+- Method `WA.onLeaveZone` is deprecated. It has been renamed to `WA.room.onLeaveZone`.
diff --git a/docs/maps/api-nav.md b/docs/maps/api-nav.md
new file mode 100644
index 00000000..29323632
--- /dev/null
+++ b/docs/maps/api-nav.md
@@ -0,0 +1,68 @@
+{.section-title.accent.text-primary}
+# API Navigation functions reference
+
+### Opening a web page in a new tab
+
+```
+WA.nav.openTab(url: string): void
+```
+
+Opens the webpage at "url" in your browser, in a new tab.
+
+Example:
+
+```javascript
+WA.nav.openTab('https://www.wikipedia.org/');
+```
+
+### Opening a web page in the current tab
+
+```
+WA.nav.goToPage(url: string): void
+```
+
+Opens the webpage at "url" in your browser in place of WorkAdventure. WorkAdventure will be completely unloaded.
+
+Example:
+
+```javascript
+WA.nav.goToPage('https://www.wikipedia.org/');
+```
+
+### Going to a different map from the script
+
+```
+
+WA.nav.goToRoom(url: string): void
+```
+
+Load the map at url without unloading workadventure
+
+relative urls: "../subFolder/map.json[#start-layer-name]"
+global urls: "/_/global/domain/path/map.json[#start-layer-name]"
+
+Example:
+
+```javascript
+WA.nav.goToRoom("/@/tcm/workadventure/floor0")  // workadventure urls
+WA.nav.goToRoom('../otherMap/map.json');
+WA.nav.goToRoom("/_/global/<path to global map>.json#start-layer-2")
+```
+
+### Opening/closing a web page in an iFrame
+
+```
+WA.nav.openCoWebSite(url: string): void
+WA.nav.closeCoWebSite(): void
+```
+
+Opens the webpage at "url" in an iFrame (on the right side of the screen) or close that iFrame.
+
+Example:
+
+```javascript
+WA.nav.openCoWebSite('https://www.wikipedia.org/');
+// ...
+WA.nav.closeCoWebSite();
+```
+
diff --git a/docs/maps/api-reference.md b/docs/maps/api-reference.md
index b9525d3c..251edfa2 100644
--- a/docs/maps/api-reference.md
+++ b/docs/maps/api-reference.md
@@ -1,257 +1,11 @@
 {.section-title.accent.text-primary}
 # API Reference
 
-### Sending a message in the chat
-
-```
-sendChatMessage(message: string, author: string): void
-```
-
-Sends a message in the chat. The message is only visible in the browser of the current user.
-
-*   **message**: the message to be displayed in the chat
-*   **author**: the name displayed for the author of the message. It does not have to be a real user.
-
-Example:
-
-```javascript
-WA.sendChatMessage('Hello world', 'Mr Robot');
-```
-
-### Listening to messages from the chat
-
-```javascript
-onChatMessage(callback: (message: string) => void): void
-```
-
-Listens to messages typed by the current user and calls the callback. Messages from other users in the chat cannot be listened to.
-
-*   **callback**: the function that will be called when a message is received. It contains the message typed by the user.
-
-Example:
-
-```javascript
-WA.onChatMessage((message => {
-    console.log('The user typed a message', message);
-}));
-```
-
-### Detecting when the user enters/leaves a zone
-
-```
-onEnterZone(name: string, callback: () => void): void
-onLeaveZone(name: string, callback: () => void): void
-```
-
-Listens to the position of the current user. The event is triggered when the user enters or leaves a given zone. The name of the zone is stored in the map, on a dedicated layer with the `zone` property.
-
-<div>
-    <figure class="figure">
-        <img src="https://workadventu.re/img/docs/trigger_event.png" class="figure-img img-fluid rounded" alt="" />
-        <figcaption class="figure-caption">The `zone` property, applied on a layer</figcaption>
-    </figure>
-</div>
-
-*   **name**: the name of the zone, as defined in the `zone` property.
-*   **callback**: the function that will be called when a user enters or leaves the zone.
-
-Example:
-
-```javascript
-WA.onEnterZone('myZone', () => {
-    WA.sendChatMessage("Hello!", 'Mr Robot');
-})
-
-WA.onLeaveZone('myZone', () => {
-    WA.sendChatMessage("Goodbye!", 'Mr Robot');
-})
-```
-
-### Opening a popup
-
-In order to open a popup window, you must first define the position of the popup on your map.
-
-You can position this popup by using a "rectangle" object in Tiled that you will place on an "object" layer.
-
-<div class="row">
-    <div class="col">
-        <img src="https://workadventu.re/img/docs/screen_popup_tiled.png" class="figure-img img-fluid rounded" alt="" />
-    </div>
-    <div class="col">
-        <img src="https://workadventu.re/img/docs/screen_popup_in_game.png" class="figure-img img-fluid rounded" alt="" />
-    </div>
-</div>
-
-```
-openPopup(targetObject: string, message: string, buttons: ButtonDescriptor[]): Popup
-```
-
-*   **targetObject**: the name of the rectangle object defined in Tiled.
-*   **message**: the message to display in the popup.
-*   **buttons**: an array of action buttons defined underneath the popup.
-
-Action buttons are `ButtonDescriptor` objects containing these properties.
-
-*   **label (_string_)**: The label of the button.
-*   **className (_string_)**: The visual type of the button. Can be one of "normal", "primary", "success", "warning", "error", "disabled".
-*   **callback (_(popup: Popup)=>void_)**: Callback called when the button is pressed.
-
-Please note that `openPopup` returns an object of the `Popup` class. Also, the callback called when a button is clicked is passed a `Popup` object.
-
-The `Popup` class that represents an open popup contains a single method: `close()`. This will obviously close the popup when called.
-
-```javascript
-class Popup {
-    /**
-     * Closes the popup
-     */
-    close() {};
-}
-```
-
-Example:
-
-```javascript
-let helloWorldPopup;
-
-// Open the popup when we enter a given zone
-helloWorldPopup = WA.onEnterZone('myZone', () => {
-    WA.openPopup("popupRectangle", 'Hello world!', [{
-        label: "Close",
-        className: "primary",
-        callback: (popup) => {
-            // Close the popup when the "Close" button is pressed.
-            popup.close();
-        }
-    });
-}]);
-
-// Close the popup when we leave the zone.
-WA.onLeaveZone('myZone', () => {
-    helloWorldPopup.close();
-});
-```
-
-### Disabling / restoring controls
-
-```
-disablePlayerControls(): void
-restorePlayerControls(): void
-```
-
-These 2 methods can be used to completely disable player controls and to enable them again.
-
-When controls are disabled, the user cannot move anymore using keyboard input. This can be useful in a "First Time User Experience" part, to display an important message to a user before letting him/her move again.
-
-Example:
-
-```javascript
-WA.onEnterZone('myZone', () => {
-    WA.disablePlayerControls();
-    WA.openPopup("popupRectangle", 'This is an imporant message!', [{
-        label: "Got it!",
-        className: "primary",
-        callback: (popup) => {
-            WA.restorePlayerControls();
-            popup.close();
-        }
-    }]);
-});
-```
-
-### Opening a web page in a new tab
-
-```
-openTab(url: string): void
-```
-
-Opens the webpage at "url" in your browser, in a new tab.
-
-Example:
-
-```javascript
-WA.openTab('https://www.wikipedia.org/');
-```
-
-### Opening a web page in the current tab
-
-```
-goToPage(url: string): void
-```
-
-Opens the webpage at "url" in your browser in place of WorkAdventure. WorkAdventure will be completely unloaded.
-
-Example:
-
-```javascript
-WA.goToPage('https://www.wikipedia.org/');
-```
-
-### Going to a different map from the script
-
-```
-
-goToRoom(url: string): void
-```
-
-Load the map at url without unloading workadventure
-
-relative urls: "../subFolder/map.json[#start-layer-name]"
-global urls: "/_/global/domain/path/map.json[#start-layer-name]"
-
-Example:
-
-```javascript
-WA.goToRoom("/@/tcm/workadventure/floor0")  // workadventure urls
-WA.goToRoom('../otherMap/map.json');
-WA.goToRoom("/_/global/<path to global map>.json#start-layer-2")
-```
-
-### Opening/closing a web page in an iFrame
-
-```
-openCoWebSite(url: string): void
-closeCoWebSite(): void
-```
-
-Opens the webpage at "url" in an iFrame (on the right side of the screen) or close that iFrame.
-
-Example:
-
-```javascript
-WA.openCoWebSite('https://www.wikipedia.org/');
-// ...
-WA.closeCoWebSite();
-```
-
-### Load a sound from an url
-
-```
-loadSound(url: string): Sound
-```
-
-Load a sound from an url
-
-Please note that `loadSound` returns an object of the `Sound` class
-
-The `Sound` class that represents a loaded sound contains two methods: `play(soundConfig : SoundConfig|undefined)` and `stop()`
-
-The parameter soundConfig is optional, if you call play without a Sound config the sound will be played with the basic configuration.
-
-Example:
-
-```javascript
-var mySound = WA.loadSound("Sound.ogg");
-var config = {
-    volume : 0.5,
-    loop : false,
-    rate : 1,
-    detune : 1,
-    delay : 0,
-    seek : 0,
-    mute : false
-}
-mySound.play(config);
-// ...
-mySound.stop();
-```
+- [Navigation functions](api-nav.md)
+- [Chat functions](api-chat.md)
+- [Room functions](api-room.md)
+- [UI functions](api-ui.md)
+- [Sound functions](api-sound.md)
+- [Controls functions](api-controls.md)
+
+- [List of deprecated functions](api-deprecated.md)
diff --git a/docs/maps/api-room.md b/docs/maps/api-room.md
new file mode 100644
index 00000000..dc7a8612
--- /dev/null
+++ b/docs/maps/api-room.md
@@ -0,0 +1,33 @@
+{.section-title.accent.text-primary}
+# API Room functions Reference
+
+### Detecting when the user enters/leaves a zone
+
+```
+WA.room.onEnterZone(name: string, callback: () => void): void
+WA.room.onLeaveZone(name: string, callback: () => void): void
+```
+
+Listens to the position of the current user. The event is triggered when the user enters or leaves a given zone. The name of the zone is stored in the map, on a dedicated layer with the `zone` property.
+
+<div>
+    <figure class="figure">
+        <img src="https://workadventu.re/img/docs/trigger_event.png" class="figure-img img-fluid rounded" alt="" />
+        <figcaption class="figure-caption">The `zone` property, applied on a layer</figcaption>
+    </figure>
+</div>
+
+*   **name**: the name of the zone, as defined in the `zone` property.
+*   **callback**: the function that will be called when a user enters or leaves the zone.
+
+Example:
+
+```javascript
+WA.room.onEnterZone('myZone', () => {
+    WA.chat.sendChatMessage("Hello!", 'Mr Robot');
+})
+
+WA.room.onLeaveZone('myZone', () => {
+    WA.chat.sendChatMessage("Goodbye!", 'Mr Robot');
+})
+```
diff --git a/docs/maps/api-sound.md b/docs/maps/api-sound.md
new file mode 100644
index 00000000..3c57ecae
--- /dev/null
+++ b/docs/maps/api-sound.md
@@ -0,0 +1,34 @@
+{.section-title.accent.text-primary}
+# API Sound functions Reference
+
+### Load a sound from an url
+
+```
+WA.sound.loadSound(url: string): Sound
+```
+
+Load a sound from an url
+
+Please note that `loadSound` returns an object of the `Sound` class
+
+The `Sound` class that represents a loaded sound contains two methods: `play(soundConfig : SoundConfig|undefined)` and `stop()`
+
+The parameter soundConfig is optional, if you call play without a Sound config the sound will be played with the basic configuration.
+
+Example:
+
+```javascript
+var mySound = WA.sound.loadSound("Sound.ogg");
+var config = {
+    volume : 0.5,
+    loop : false,
+    rate : 1,
+    detune : 1,
+    delay : 0,
+    seek : 0,
+    mute : false
+}
+mySound.play(config);
+// ...
+mySound.stop();
+```
diff --git a/docs/maps/api-ui.md b/docs/maps/api-ui.md
new file mode 100644
index 00000000..edda8613
--- /dev/null
+++ b/docs/maps/api-ui.md
@@ -0,0 +1,67 @@
+{.section-title.accent.text-primary}
+# API Room functions Reference
+
+### Opening a popup
+
+In order to open a popup window, you must first define the position of the popup on your map.
+
+You can position this popup by using a "rectangle" object in Tiled that you will place on an "object" layer.
+
+<div class="row">
+    <div class="col">
+        <img src="https://workadventu.re/img/docs/screen_popup_tiled.png" class="figure-img img-fluid rounded" alt="" />
+    </div>
+    <div class="col">
+        <img src="https://workadventu.re/img/docs/screen_popup_in_game.png" class="figure-img img-fluid rounded" alt="" />
+    </div>
+</div>
+
+```
+WA.ui.openPopup(targetObject: string, message: string, buttons: ButtonDescriptor[]): Popup
+```
+
+*   **targetObject**: the name of the rectangle object defined in Tiled.
+*   **message**: the message to display in the popup.
+*   **buttons**: an array of action buttons defined underneath the popup.
+
+Action buttons are `ButtonDescriptor` objects containing these properties.
+
+*   **label (_string_)**: The label of the button.
+*   **className (_string_)**: The visual type of the button. Can be one of "normal", "primary", "success", "warning", "error", "disabled".
+*   **callback (_(popup: Popup)=>void_)**: Callback called when the button is pressed.
+
+Please note that `openPopup` returns an object of the `Popup` class. Also, the callback called when a button is clicked is passed a `Popup` object.
+
+The `Popup` class that represents an open popup contains a single method: `close()`. This will obviously close the popup when called.
+
+```javascript
+class Popup {
+    /**
+     * Closes the popup
+     */
+    close() {};
+}
+```
+
+Example:
+
+```javascript
+let helloWorldPopup;
+
+// Open the popup when we enter a given zone
+helloWorldPopup = WA.room.onEnterZone('myZone', () => {
+    WA.ui.openPopup("popupRectangle", 'Hello world!', [{
+        label: "Close",
+        className: "primary",
+        callback: (popup) => {
+            // Close the popup when the "Close" button is pressed.
+            popup.close();
+        }
+    });
+}]);
+
+// Close the popup when we leave the zone.
+WA.room.onLeaveZone('myZone', () => {
+    helloWorldPopup.close();
+});
+```
diff --git a/front/package.json b/front/package.json
index a8135b5e..24accec8 100644
--- a/front/package.json
+++ b/front/package.json
@@ -40,6 +40,7 @@
     "@types/simple-peer": "^9.6.0",
     "@types/socket.io-client": "^1.4.32",
     "axios": "^0.21.1",
+    "cross-env": "^7.0.3",
     "generic-type-guard": "^3.2.0",
     "google-protobuf": "^3.13.0",
     "phaser": "^3.54.0",
@@ -53,12 +54,12 @@
   },
   "scripts": {
     "start": "run-p serve svelte-check-watch",
-    "serve": "TS_NODE_PROJECT=\"tsconfig-for-webpack.json\" webpack serve --open",
-    "build": "TS_NODE_PROJECT=\"tsconfig-for-webpack.json\" NODE_ENV=production webpack",
+    "serve": "cross-env TS_NODE_PROJECT=\"tsconfig-for-webpack.json\" webpack serve --open",
+    "build": "cross-env TS_NODE_PROJECT=\"tsconfig-for-webpack.json\" NODE_ENV=production webpack",
     "test": "TS_NODE_PROJECT=\"tsconfig-for-jasmine.json\" ts-node node_modules/jasmine/bin/jasmine --config=jasmine.json",
     "lint": "node_modules/.bin/eslint src/ . --ext .ts",
     "fix": "node_modules/.bin/eslint --fix src/ . --ext .ts",
     "svelte-check-watch": "svelte-check --fail-on-warnings --fail-on-hints --compiler-warnings \"a11y-no-onchange:ignore,a11y-autofocus:ignore,a11y-media-has-caption:ignore\" --watch",
-    "svelte-check":       "svelte-check --fail-on-warnings --fail-on-hints --compiler-warnings \"a11y-no-onchange:ignore,a11y-autofocus:ignore,a11y-media-has-caption:ignore\""
+    "svelte-check": "svelte-check --fail-on-warnings --fail-on-hints --compiler-warnings \"a11y-no-onchange:ignore,a11y-autofocus:ignore,a11y-media-has-caption:ignore\""
   }
 }
diff --git a/front/src/Api/Events/IframeEvent.ts b/front/src/Api/Events/IframeEvent.ts
index 33de9675..4da8ea96 100644
--- a/front/src/Api/Events/IframeEvent.ts
+++ b/front/src/Api/Events/IframeEvent.ts
@@ -35,7 +35,7 @@ export type IframeEventMap = {
     removeBubble: null
     loadSound: LoadSoundEvent
     playSound: PlaySoundEvent
-    stopSound: null
+    stopSound: null,
 }
 export interface IframeEvent<T extends keyof IframeEventMap> {
     type: T;
diff --git a/front/src/Api/iframe/IframeApiContribution.ts b/front/src/Api/iframe/IframeApiContribution.ts
new file mode 100644
index 00000000..f3b25999
--- /dev/null
+++ b/front/src/Api/iframe/IframeApiContribution.ts
@@ -0,0 +1,31 @@
+import type * as tg from "generic-type-guard";
+import type { IframeEvent, IframeEventMap, IframeResponseEventMap } from '../Events/IframeEvent';
+
+export function sendToWorkadventure(content: IframeEvent<keyof IframeEventMap>) {
+    window.parent.postMessage(content, "*")
+}
+type GuardedType<Guard extends tg.TypeGuard<unknown>> = Guard extends tg.TypeGuard<infer T> ? T : never
+
+export interface IframeCallback<Key extends keyof IframeResponseEventMap, T = IframeResponseEventMap[Key], Guard = tg.TypeGuard<T>> {
+
+    typeChecker: Guard,
+    callback: (payloadData: T) => void
+}
+
+export interface IframeCallbackContribution<Key extends keyof IframeResponseEventMap> extends IframeCallback<Key> {
+
+    type: Key
+}
+
+/**
+ * !! be aware that the implemented attributes (addMethodsAtRoot and subObjectIdentifier) must be readonly
+ *
+ *
+ */
+
+export abstract class IframeApiContribution<T extends {
+    callbacks: Array<IframeCallbackContribution<keyof IframeResponseEventMap>>,
+}> {
+
+    abstract callbacks: T["callbacks"]
+}
diff --git a/front/src/Api/iframe/Sound/Sound.ts b/front/src/Api/iframe/Sound/Sound.ts
new file mode 100644
index 00000000..3bb3251a
--- /dev/null
+++ b/front/src/Api/iframe/Sound/Sound.ts
@@ -0,0 +1,39 @@
+import {sendToWorkadventure} from "../IframeApiContribution";
+import type {LoadSoundEvent} from "../../Events/LoadSoundEvent";
+import type {PlaySoundEvent} from "../../Events/PlaySoundEvent";
+import type {StopSoundEvent} from "../../Events/StopSoundEvent";
+import SoundConfig = Phaser.Types.Sound.SoundConfig;
+
+export class Sound {
+    constructor(private url: string) {
+        sendToWorkadventure({
+            "type": 'loadSound',
+            "data": {
+                url: this.url,
+            } as LoadSoundEvent
+
+        });
+    }
+
+    public play(config: SoundConfig) {
+        sendToWorkadventure({
+            "type": 'playSound',
+            "data": {
+                url: this.url,
+                config
+            } as PlaySoundEvent
+
+        });
+        return this.url;
+    }
+    public stop() {
+        sendToWorkadventure({
+            "type": 'stopSound',
+            "data": {
+                url: this.url,
+            } as StopSoundEvent
+
+        });
+        return this.url;
+    }
+}
diff --git a/front/src/Api/iframe/Ui/ButtonDescriptor.ts b/front/src/Api/iframe/Ui/ButtonDescriptor.ts
new file mode 100644
index 00000000..119daf5c
--- /dev/null
+++ b/front/src/Api/iframe/Ui/ButtonDescriptor.ts
@@ -0,0 +1,18 @@
+import type {Popup} from "./Popup";
+
+export type ButtonClickedCallback = (popup: Popup) => void;
+
+export interface ButtonDescriptor {
+    /**
+     * The label of the button
+     */
+    label: string,
+    /**
+     * The type of the button. Can be one of "normal", "primary", "success", "warning", "error", "disabled"
+     */
+    className?: "normal" | "primary" | "success" | "warning" | "error" | "disabled",
+    /**
+     * Callback called if the button is pressed
+     */
+    callback: ButtonClickedCallback,
+}
diff --git a/front/src/Api/iframe/Ui/Popup.ts b/front/src/Api/iframe/Ui/Popup.ts
new file mode 100644
index 00000000..37dea922
--- /dev/null
+++ b/front/src/Api/iframe/Ui/Popup.ts
@@ -0,0 +1,19 @@
+import {sendToWorkadventure} from "../IframeApiContribution";
+import type {ClosePopupEvent} from "../../Events/ClosePopupEvent";
+
+export class Popup {
+    constructor(private id: number) {
+    }
+
+    /**
+     * Closes the popup
+     */
+    public close(): void {
+        sendToWorkadventure({
+            'type': 'closePopup',
+            'data': {
+                'popupId': this.id,
+            } as ClosePopupEvent
+        });
+    }
+}
diff --git a/front/src/Api/iframe/chat.ts b/front/src/Api/iframe/chat.ts
new file mode 100644
index 00000000..5f73b744
--- /dev/null
+++ b/front/src/Api/iframe/chat.ts
@@ -0,0 +1,38 @@
+import type { ChatEvent } from '../Events/ChatEvent'
+import { isUserInputChatEvent, UserInputChatEvent } from '../Events/UserInputChatEvent'
+import { IframeApiContribution, sendToWorkadventure } from './IframeApiContribution'
+import { apiCallback } from "./registeredCallbacks";
+import {Subject} from "rxjs";
+
+const chatStream = new Subject<string>();
+
+class WorkadventureChatCommands extends IframeApiContribution<WorkadventureChatCommands> {
+
+    callbacks = [apiCallback({
+        callback: (event: UserInputChatEvent) => {
+            chatStream.next(event.message);
+        },
+        type: "userInputChat",
+        typeChecker: isUserInputChatEvent
+    })]
+
+
+    sendChatMessage(message: string, author: string) {
+        sendToWorkadventure({
+            type: 'chat',
+            data: {
+                'message': message,
+                'author': author
+            } as ChatEvent
+        })
+    }
+
+    /**
+     * Listen to messages sent by the local user, in the chat.
+     */
+    onChatMessage(callback: (message: string) => void) {
+        chatStream.subscribe(callback);
+    }
+}
+
+export default new WorkadventureChatCommands()
diff --git a/front/src/Api/iframe/controls.ts b/front/src/Api/iframe/controls.ts
new file mode 100644
index 00000000..04e48990
--- /dev/null
+++ b/front/src/Api/iframe/controls.ts
@@ -0,0 +1,16 @@
+import { IframeApiContribution, sendToWorkadventure } from './IframeApiContribution';
+
+class WorkadventureControlsCommands extends IframeApiContribution<WorkadventureControlsCommands> {
+    callbacks = []
+
+    disablePlayerControls(): void {
+        sendToWorkadventure({ 'type': 'disablePlayerControls', data: null });
+    }
+
+    restorePlayerControls(): void {
+        sendToWorkadventure({ 'type': 'restorePlayerControls', data: null });
+    }
+}
+
+
+export default new WorkadventureControlsCommands();
diff --git a/front/src/Api/iframe/nav.ts b/front/src/Api/iframe/nav.ts
new file mode 100644
index 00000000..b6798330
--- /dev/null
+++ b/front/src/Api/iframe/nav.ts
@@ -0,0 +1,56 @@
+import type { GoToPageEvent } from '../Events/GoToPageEvent';
+import type { OpenTabEvent } from '../Events/OpenTabEvent';
+import { IframeApiContribution, sendToWorkadventure } from './IframeApiContribution';
+import type {OpenCoWebSiteEvent} from "../Events/OpenCoWebSiteEvent";
+
+
+class WorkadventureNavigationCommands extends IframeApiContribution<WorkadventureNavigationCommands> {
+    callbacks = []
+
+
+    openTab(url: string): void {
+        sendToWorkadventure({
+            "type": 'openTab',
+            "data": {
+                url
+            } as OpenTabEvent
+        });
+    }
+
+    goToPage(url: string): void {
+        sendToWorkadventure({
+            "type": 'goToPage',
+            "data": {
+                url
+            } as GoToPageEvent
+        });
+    }
+
+    goToRoom(url: string): void {
+        sendToWorkadventure({
+            "type": 'loadPage',
+            "data": {
+                url
+            }
+        });
+    }
+
+    openCoWebSite(url: string): void {
+        sendToWorkadventure({
+            "type": 'openCoWebSite',
+            "data": {
+                url
+            } as OpenCoWebSiteEvent
+        });
+    }
+
+    closeCoWebSite(): void {
+        sendToWorkadventure({
+            "type": 'closeCoWebSite',
+            data: null
+        });
+    }
+}
+
+
+export default new WorkadventureNavigationCommands();
diff --git a/front/src/Api/iframe/registeredCallbacks.ts b/front/src/Api/iframe/registeredCallbacks.ts
new file mode 100644
index 00000000..5d6f784d
--- /dev/null
+++ b/front/src/Api/iframe/registeredCallbacks.ts
@@ -0,0 +1,16 @@
+import type {IframeResponseEventMap} from "../../Api/Events/IframeEvent";
+import type {IframeCallback} from "../../Api/iframe/IframeApiContribution";
+import type {IframeCallbackContribution} from "../../Api/iframe/IframeApiContribution";
+
+export const registeredCallbacks: { [K in keyof IframeResponseEventMap]?: IframeCallback<K> } = {}
+
+export function apiCallback<T extends keyof IframeResponseEventMap>(callbackData: IframeCallbackContribution<T>): IframeCallbackContribution<keyof IframeResponseEventMap> {
+    const iframeCallback = {
+        typeChecker: callbackData.typeChecker,
+        callback: callbackData.callback
+    } as IframeCallback<T>;
+
+    const newCallback = { [callbackData.type]: iframeCallback };
+    Object.assign(registeredCallbacks, newCallback)
+    return callbackData as unknown as IframeCallbackContribution<keyof IframeResponseEventMap>;
+}
diff --git a/front/src/Api/iframe/room.ts b/front/src/Api/iframe/room.ts
new file mode 100644
index 00000000..ed412166
--- /dev/null
+++ b/front/src/Api/iframe/room.ts
@@ -0,0 +1,50 @@
+import { Subject } from "rxjs";
+import { EnterLeaveEvent, isEnterLeaveEvent } from '../Events/EnterLeaveEvent';
+import { IframeApiContribution } from './IframeApiContribution';
+import { apiCallback } from "./registeredCallbacks";
+
+const enterStreams: Map<string, Subject<EnterLeaveEvent>> = new Map<string, Subject<EnterLeaveEvent>>();
+const leaveStreams: Map<string, Subject<EnterLeaveEvent>> = new Map<string, Subject<EnterLeaveEvent>>();
+
+class WorkadventureRoomCommands extends IframeApiContribution<WorkadventureRoomCommands> {
+    callbacks = [
+        apiCallback({
+            callback: (payloadData: EnterLeaveEvent) => {
+                enterStreams.get(payloadData.name)?.next();
+            },
+            type: "enterEvent",
+            typeChecker: isEnterLeaveEvent
+        }),
+        apiCallback({
+            type: "leaveEvent",
+            typeChecker: isEnterLeaveEvent,
+            callback: (payloadData) => {
+                leaveStreams.get(payloadData.name)?.next();
+            }
+        })
+
+    ]
+
+
+    onEnterZone(name: string, callback: () => void): void {
+        let subject = enterStreams.get(name);
+        if (subject === undefined) {
+            subject = new Subject<EnterLeaveEvent>();
+            enterStreams.set(name, subject);
+        }
+        subject.subscribe(callback);
+
+    }
+    onLeaveZone(name: string, callback: () => void): void {
+        let subject = leaveStreams.get(name);
+        if (subject === undefined) {
+            subject = new Subject<EnterLeaveEvent>();
+            leaveStreams.set(name, subject);
+        }
+        subject.subscribe(callback);
+    }
+
+}
+
+
+export default new WorkadventureRoomCommands();
diff --git a/front/src/Api/iframe/sound.ts b/front/src/Api/iframe/sound.ts
new file mode 100644
index 00000000..70430b46
--- /dev/null
+++ b/front/src/Api/iframe/sound.ts
@@ -0,0 +1,17 @@
+import type { LoadSoundEvent } from '../Events/LoadSoundEvent';
+import type { PlaySoundEvent } from '../Events/PlaySoundEvent';
+import type { StopSoundEvent } from '../Events/StopSoundEvent';
+import { IframeApiContribution, sendToWorkadventure } from './IframeApiContribution';
+import {Sound} from "./Sound/Sound";
+
+class WorkadventureSoundCommands extends IframeApiContribution<WorkadventureSoundCommands> {
+    callbacks = []
+
+    loadSound(url: string): Sound {
+        return new Sound(url);
+    }
+
+}
+
+
+export default new WorkadventureSoundCommands();
diff --git a/front/src/Api/iframe/ui.ts b/front/src/Api/iframe/ui.ts
new file mode 100644
index 00000000..629d3c36
--- /dev/null
+++ b/front/src/Api/iframe/ui.ts
@@ -0,0 +1,83 @@
+import { isButtonClickedEvent } from '../Events/ButtonClickedEvent';
+import type { ClosePopupEvent } from '../Events/ClosePopupEvent';
+import { IframeApiContribution, sendToWorkadventure } from './IframeApiContribution';
+import { apiCallback } from "./registeredCallbacks";
+import {Popup} from "./Ui/Popup";
+import type {ButtonClickedCallback, ButtonDescriptor} from "./Ui/ButtonDescriptor";
+
+let popupId = 0;
+const popups: Map<number, Popup> = new Map<number, Popup>();
+const popupCallbacks: Map<number, Map<number, ButtonClickedCallback>> = new Map<number, Map<number, ButtonClickedCallback>>();
+
+interface ZonedPopupOptions {
+    zone: string
+    objectLayerName?: string,
+    popupText: string,
+    delay?: number
+    popupOptions: Array<ButtonDescriptor>
+}
+
+
+class WorkAdventureUiCommands extends IframeApiContribution<WorkAdventureUiCommands> {
+
+    callbacks = [apiCallback({
+        type: "buttonClickedEvent",
+        typeChecker: isButtonClickedEvent,
+        callback: (payloadData) => {
+            const callback = popupCallbacks.get(payloadData.popupId)?.get(payloadData.buttonId);
+            const popup = popups.get(payloadData.popupId);
+            if (popup === undefined) {
+                throw new Error('Could not find popup with ID "' + payloadData.popupId + '"');
+            }
+            if (callback) {
+                callback(popup);
+            }
+        }
+    })];
+
+
+    openPopup(targetObject: string, message: string, buttons: ButtonDescriptor[]): Popup {
+        popupId++;
+        const popup = new Popup(popupId);
+        const btnMap = new Map<number, () => void>();
+        popupCallbacks.set(popupId, btnMap);
+        let id = 0;
+        for (const button of buttons) {
+            const callback = button.callback;
+            if (callback) {
+                btnMap.set(id, () => {
+                    callback(popup);
+                });
+            }
+            id++;
+        }
+
+        sendToWorkadventure({
+            'type': 'openPopup',
+            'data': {
+                popupId,
+                targetObject,
+                message,
+                buttons: buttons.map((button) => {
+                    return {
+                        label: button.label,
+                        className: button.className
+                    };
+                })
+            }
+        });
+
+        popups.set(popupId, popup)
+        return popup;
+    }
+
+    displayBubble(): void {
+        sendToWorkadventure({ 'type': 'displayBubble', data: null });
+    }
+
+    removeBubble(): void {
+        sendToWorkadventure({ 'type': 'removeBubble', data: null });
+    }
+}
+
+export default new WorkAdventureUiCommands();
diff --git a/front/src/iframe_api.ts b/front/src/iframe_api.ts
index 89279a64..ae5321cf 100644
--- a/front/src/iframe_api.ts
+++ b/front/src/iframe_api.ts
@@ -1,286 +1,175 @@
-import type { ChatEvent } from "./Api/Events/ChatEvent";
-import { isIframeResponseEventWrapper } from "./Api/Events/IframeEvent";
-import { isUserInputChatEvent, UserInputChatEvent } from "./Api/Events/UserInputChatEvent";
-import { Subject } from "rxjs";
-import { EnterLeaveEvent, isEnterLeaveEvent } from "./Api/Events/EnterLeaveEvent";
-import type { OpenPopupEvent } from "./Api/Events/OpenPopupEvent";
-import { isButtonClickedEvent } from "./Api/Events/ButtonClickedEvent";
-import type { ClosePopupEvent } from "./Api/Events/ClosePopupEvent";
-import type { OpenTabEvent } from "./Api/Events/OpenTabEvent";
-import type { GoToPageEvent } from "./Api/Events/GoToPageEvent";
-import type { OpenCoWebSiteEvent } from "./Api/Events/OpenCoWebSiteEvent";
-import type { PlaySoundEvent } from "./Api/Events/PlaySoundEvent";
-import type { StopSoundEvent } from "./Api/Events/StopSoundEvent";
-import type { LoadSoundEvent } from "./Api/Events/LoadSoundEvent";
-import SoundConfig = Phaser.Types.Sound.SoundConfig;
-import type { LoadPageEvent } from './Api/Events/LoadPageEvent';
+import {registeredCallbacks} from "./Api/iframe/registeredCallbacks";
+import {
+    IframeResponseEvent,
+    IframeResponseEventMap,
+    isIframeResponseEventWrapper,
+    TypedMessageEvent
+} from "./Api/Events/IframeEvent";
+import chat from "./Api/iframe/chat";
+import type {IframeCallback} from './Api/iframe/IframeApiContribution';
+import nav from "./Api/iframe/nav";
+import controls from "./Api/iframe/controls";
+import ui from "./Api/iframe/ui";
+import sound from "./Api/iframe/sound";
+import room from "./Api/iframe/room";
+import type {ButtonDescriptor} from "./Api/iframe/Ui/ButtonDescriptor";
+import type {Popup} from "./Api/iframe/Ui/Popup";
+import type {Sound} from "./Api/iframe/Sound/Sound";
 
-interface WorkAdventureApi {
-    sendChatMessage(message: string, author: string): void;
-    onChatMessage(callback: (message: string) => void): void;
-    onEnterZone(name: string, callback: () => void): void;
-    onLeaveZone(name: string, callback: () => void): void;
-    openPopup(targetObject: string, message: string, buttons: ButtonDescriptor[]): Popup;
-    openTab(url: string): void;
-    goToPage(url: string): void;
-    goToRoom(url: string): void;
-    openCoWebSite(url: string): void;
-    closeCoWebSite(): void;
-    disablePlayerControls(): void;
-    restorePlayerControls(): void;
-    displayBubble(): void;
-    removeBubble(): void;
-    loadSound(url : string): Sound;
-}
+const wa = {
+    ui,
+    nav,
+    controls,
+    chat,
+    sound,
+    room,
+
+    // All methods below are deprecated and should not be used anymore.
+    // They are kept here for backward compatibility.
+
+    /**
+     * @deprecated Use WA.chat.sendChatMessage instead
+     */
+    sendChatMessage(message: string, author: string): void {
+        console.warn('Method WA.sendChatMessage is deprecated. Please use WA.chat.sendChatMessage instead');
+        chat.sendChatMessage(message, author);
+    },
+    /**
+     * @deprecated Use WA.chat.disablePlayerControls instead
+     */
+    disablePlayerControls(): void {
+        console.warn('Method WA.disablePlayerControls is deprecated. Please use WA.controls.disablePlayerControls instead');
+        controls.disablePlayerControls();
+    },
+
+    /**
+     * @deprecated Use WA.controls.restorePlayerControls instead
+     */
+    restorePlayerControls(): void {
+        console.warn('Method WA.restorePlayerControls is deprecated. Please use WA.controls.restorePlayerControls instead');
+        controls.restorePlayerControls();
+    },
+
+    /**
+     * @deprecated Use WA.ui.displayBubble instead
+     */
+    displayBubble(): void {
+        console.warn('Method WA.displayBubble is deprecated. Please use WA.ui.displayBubble instead');
+        ui.displayBubble();
+    },
+
+    /**
+     * @deprecated Use WA.ui.removeBubble instead
+     */
+    removeBubble(): void {
+        console.warn('Method WA.removeBubble is deprecated. Please use WA.ui.removeBubble instead');
+        ui.removeBubble();
+    },
+
+    /**
+     * @deprecated Use WA.nav.openTab instead
+     */
+    openTab(url: string): void {
+        console.warn('Method WA.openTab is deprecated. Please use WA.nav.openTab instead');
+        nav.openTab(url);
+    },
+
+    /**
+     * @deprecated Use WA.sound.loadSound instead
+     */
+    loadSound(url: string) : Sound {
+        console.warn('Method WA.loadSound is deprecated. Please use WA.sound.loadSound instead');
+        return sound.loadSound(url);
+    },
+
+    /**
+     * @deprecated Use WA.nav.goToPage instead
+     */
+    goToPage(url : string) : void {
+        console.warn('Method WA.goToPage is deprecated. Please use WA.nav.goToPage instead');
+        nav.goToPage(url);
+    },
+
+    /**
+     * @deprecated Use WA.nav.goToRoom instead
+     */
+    goToRoom(url: string): void {
+        console.warn('Method WA.goToRoom is deprecated. Please use WA.nav.goToRoom instead');
+        nav.goToRoom(url);
+    },
+
+    /**
+     * @deprecated Use WA.nav.openCoWebSite instead
+     */
+    openCoWebSite(url : string) : void{
+        console.warn('Method WA.openCoWebSite is deprecated. Please use WA.nav.openCoWebSite instead');
+        nav.openCoWebSite(url);
+    },
+
+    /**
+     * @deprecated Use WA.nav.closeCoWebSite instead
+     */
+    closeCoWebSite(): void {
+        console.warn('Method WA.closeCoWebSite is deprecated. Please use WA.nav.closeCoWebSite instead');
+        nav.closeCoWebSite();
+    },
+
+    /**
+     * @deprecated Use WA.controls.restorePlayerControls instead
+     */
+    openPopup(targetObject: string, message: string, buttons: ButtonDescriptor[]): Popup {
+        console.warn('Method WA.openPopup is deprecated. Please use WA.ui.openPopup instead');
+        return ui.openPopup(targetObject, message, buttons);
+    },
+    /**
+     * @deprecated Use WA.chat.onChatMessage instead
+     */
+    onChatMessage(callback: (message: string) => void): void {
+        console.warn('Method WA.onChatMessage is deprecated. Please use WA.chat.onChatMessage instead');
+        chat.onChatMessage(callback);
+    },
+    /**
+     * @deprecated Use WA.room.onEnterZone instead
+     */
+    onEnterZone(name: string, callback: () => void): void {
+        console.warn('Method WA.onEnterZone is deprecated. Please use WA.room.onEnterZone instead');
+        room.onEnterZone(name, callback);
+    },
+    /**
+     * @deprecated Use WA.room.onLeaveZone instead
+     */
+    onLeaveZone(name: string, callback: () => void): void {
+        console.warn('Method WA.onLeaveZone is deprecated. Please use WA.room.onLeaveZone instead');
+        room.onLeaveZone(name, callback);
+    },
+};
+
+export type WorkAdventureApi = typeof wa;
 
 declare global {
-    // eslint-disable-next-line no-var
-    var WA: WorkAdventureApi
 
+    interface Window {
+        WA: WorkAdventureApi
+    }
+    let WA: WorkAdventureApi
 }
 
-type ChatMessageCallback = (message: string) => void;
-type ButtonClickedCallback = (popup: Popup) => void;
+window.WA = wa;
 
-const userInputChatStream: Subject<UserInputChatEvent> = new Subject();
-const enterStreams: Map<string, Subject<EnterLeaveEvent>> = new Map<string, Subject<EnterLeaveEvent>>();
-const leaveStreams: Map<string, Subject<EnterLeaveEvent>> = new Map<string, Subject<EnterLeaveEvent>>();
-const popups: Map<number, Popup> = new Map<number, Popup>();
-const popupCallbacks: Map<number, Map<number, ButtonClickedCallback>> = new Map<number, Map<number, ButtonClickedCallback>>();
-
-let popupId = 0;
-interface ButtonDescriptor {
-    /**
-     * The label of the button
-     */
-    label: string,
-    /**
-     * The type of the button. Can be one of "normal", "primary", "success", "warning", "error", "disabled"
-     */
-    className?: "normal" | "primary" | "success" | "warning" | "error" | "disabled",
-    /**
-     * Callback called if the button is pressed
-     */
-    callback: ButtonClickedCallback,
-}
-
-export class Popup {
-    constructor(private id: number) {
-    }
-
-    /**
-     * Closes the popup
-     */
-    public close(): void {
-        window.parent.postMessage({
-            'type': 'closePopup',
-            'data': {
-                'popupId': this.id,
-            } as ClosePopupEvent
-        }, '*');
-    }
-}
-
-export class Sound {
-    constructor(private url: string) {
-        window.parent.postMessage({
-            "type" : 'loadSound',
-            "data": {
-                url: this.url,
-            } as LoadSoundEvent
-
-        },'*');
-    }
-
-    public play(config : SoundConfig) {
-        window.parent.postMessage({
-            "type" : 'playSound',
-            "data": {
-                url: this.url,
-                config
-            } as PlaySoundEvent
-
-        },'*');
-        return this.url;
-    }
-    public stop() {
-        window.parent.postMessage({
-            "type" : 'stopSound',
-            "data": {
-                url: this.url,
-            } as StopSoundEvent
-
-        },'*');
-        return this.url;
-    }
-
-}
-
-window.WA = {
-    /**
-     * Send a message in the chat.
-     * Only the local user will receive this message.
-     */
-    sendChatMessage(message: string, author: string) {
-        window.parent.postMessage({
-            'type': 'chat',
-            'data': {
-                'message': message,
-                'author': author
-            } as ChatEvent
-        }, '*');
-    },
-    disablePlayerControls(): void {
-        window.parent.postMessage({ 'type': 'disablePlayerControls' }, '*');
-    },
-
-    restorePlayerControls(): void {
-        window.parent.postMessage({ 'type': 'restorePlayerControls' }, '*');
-    },
-
-    displayBubble(): void {
-        window.parent.postMessage({ 'type': 'displayBubble' }, '*');
-    },
-
-    removeBubble(): void {
-        window.parent.postMessage({ 'type': 'removeBubble' }, '*');
-    },
-
-    openTab(url: string): void {
-        window.parent.postMessage({
-            "type": 'openTab',
-            "data": {
-                url
-            } as OpenTabEvent
-        }, '*');
-    },
-
-    loadSound(url: string) : Sound {
-        return new Sound(url);
-    },
-
-    goToPage(url : string) : void{
-        window.parent.postMessage({
-            "type": 'goToPage',
-            "data": {
-                url
-            } as GoToPageEvent
-        }, '*');
-    },
-
-    goToRoom(url: string): void {
-        window.parent.postMessage({
-            "type" : 'loadPage',
-            "data" : {
-                url
-            } as LoadPageEvent
-            },'*');
-    },
-
-    openCoWebSite(url : string) : void{
-        window.parent.postMessage({
-            "type" : 'openCoWebSite',
-            "data" : {
-                url
-            } as OpenCoWebSiteEvent
-        }, '*');
-    },
-
-    closeCoWebSite(): void {
-        window.parent.postMessage({
-            "type": 'closeCoWebSite'
-        }, '*');
-    },
-
-    openPopup(targetObject: string, message: string, buttons: ButtonDescriptor[]): Popup {
-        popupId++;
-        const popup = new Popup(popupId);
-        const btnMap = new Map<number, () => void>();
-        popupCallbacks.set(popupId, btnMap);
-        let id = 0;
-        for (const button of buttons) {
-            const callback = button.callback;
-            if (callback) {
-                btnMap.set(id, () => {
-                    callback(popup);
-                });
-            }
-            id++;
-        }
-
-
-        window.parent.postMessage({
-            'type': 'openPopup',
-            'data': {
-                popupId,
-                targetObject,
-                message,
-                buttons: buttons.map((button) => {
-                    return {
-                        label: button.label,
-                        className: button.className
-                    };
-                })
-            } as OpenPopupEvent
-        }, '*');
-
-        popups.set(popupId, popup)
-        return popup;
-    },
-    /**
-     * Listen to messages sent by the local user, in the chat.
-     */
-    onChatMessage(callback: ChatMessageCallback): void {
-        userInputChatStream.subscribe((userInputChatEvent) => {
-            callback(userInputChatEvent.message);
-        });
-    },
-    onEnterZone(name: string, callback: () => void): void {
-        let subject = enterStreams.get(name);
-        if (subject === undefined) {
-            subject = new Subject<EnterLeaveEvent>();
-            enterStreams.set(name, subject);
-        }
-        subject.subscribe(callback);
-    },
-    onLeaveZone(name: string, callback: () => void): void {
-        let subject = leaveStreams.get(name);
-        if (subject === undefined) {
-            subject = new Subject<EnterLeaveEvent>();
-            leaveStreams.set(name, subject);
-        }
-        subject.subscribe(callback);
-    },
-}
-
-window.addEventListener('message', message => {
+window.addEventListener('message', <T extends keyof IframeResponseEventMap>(message: TypedMessageEvent<IframeResponseEvent<T>>) => {
     if (message.source !== window.parent) {
         return; // Skip message in this event listener
     }
-
     const payload = message.data;
-
     console.debug(payload);
 
     if (isIframeResponseEventWrapper(payload)) {
         const payloadData = payload.data;
-        if (payload.type === 'userInputChat' && isUserInputChatEvent(payloadData)) {
-            userInputChatStream.next(payloadData);
-        } else if (payload.type === 'enterEvent' && isEnterLeaveEvent(payloadData)) {
-            enterStreams.get(payloadData.name)?.next();
-        } else if (payload.type === 'leaveEvent' && isEnterLeaveEvent(payloadData)) {
-            leaveStreams.get(payloadData.name)?.next();
-        } else if (payload.type === 'buttonClickedEvent' && isButtonClickedEvent(payloadData)) {
-            const callback = popupCallbacks.get(payloadData.popupId)?.get(payloadData.buttonId);
-            const popup = popups.get(payloadData.popupId);
-            if (popup === undefined) {
-                throw new Error('Could not find popup with ID "' + payloadData.popupId + '"');
-            }
-            if (callback) {
-                callback(popup);
-            }
-        }
 
+        const callback = registeredCallbacks[payload.type] as IframeCallback<T> | undefined
+        if (callback?.typeChecker(payloadData)) {
+            callback?.callback(payloadData)
+        }
     }
 
     // ...
diff --git a/maps/tests/deprecated_functions.json b/maps/tests/deprecated_functions.json
new file mode 100644
index 00000000..a4c035f7
--- /dev/null
+++ b/maps/tests/deprecated_functions.json
@@ -0,0 +1,164 @@
+{ "compressionlevel":-1,
+ "height":10,
+ "infinite":false,
+ "layers":[
+        {
+         "data":[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+         "height":10,
+         "id":1,
+         "name":"floor",
+         "opacity":1,
+         "type":"tilelayer",
+         "visible":true,
+         "width":10,
+         "x":0,
+         "y":0
+        }, 
+        {
+         "data":[0, 0, 0, 0, 0, 0, 0, 0, 23, 23, 0, 0, 0, 0, 0, 0, 0, 0, 23, 23, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
+         "height":10,
+         "id":6,
+         "name":"triggerZone",
+         "opacity":1,
+         "properties":[
+                {
+                 "name":"zone",
+                 "type":"string",
+                 "value":"myTrigger"
+                }],
+         "type":"tilelayer",
+         "visible":true,
+         "width":10,
+         "x":0,
+         "y":0
+        }, 
+        {
+         "data":[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 23, 23, 0, 0, 0, 0, 0, 0, 0, 0, 23, 23, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
+         "height":10,
+         "id":7,
+         "name":"popupZone",
+         "opacity":1,
+         "properties":[
+                {
+                 "name":"zone",
+                 "type":"string",
+                 "value":"popupZone"
+                }],
+         "type":"tilelayer",
+         "visible":true,
+         "width":10,
+         "x":0,
+         "y":0
+        }, 
+        {
+         "data":[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
+         "height":10,
+         "id":2,
+         "name":"start",
+         "opacity":1,
+         "type":"tilelayer",
+         "visible":true,
+         "width":10,
+         "x":0,
+         "y":0
+        }, 
+        {
+         "draworder":"topdown",
+         "id":3,
+         "name":"floorLayer",
+         "objects":[
+                {
+                 "height":147.135497146101,
+                 "id":1,
+                 "name":"myPopup2",
+                 "rotation":0,
+                 "type":"",
+                 "visible":true,
+                 "width":104.442827410047,
+                 "x":142.817125079855,
+                 "y":147.448134926559
+                }, 
+                {
+                 "height":132.434722966794,
+                 "id":2,
+                 "name":"myPopup1",
+                 "rotation":0,
+                 "type":"",
+                 "visible":true,
+                 "width":125.735549178518,
+                 "x":13.649632619596,
+                 "y":50.8502491249093
+                }, 
+                {
+                 "height":67,
+                 "id":3,
+                 "name":"",
+                 "rotation":0,
+                 "text":
+                    {
+                     "fontfamily":"Sans Serif",
+                     "pixelsize":11,
+                     "text":"Test:\nWalk on top carpet\nResult:\nA message \"Don't step on my carpet\" is displayed\nIn the console, deprecation warnings MUST be displayed",
+                     "wrap":true
+                    },
+                 "type":"",
+                 "visible":true,
+                 "width":252.4375,
+                 "x":2.78125,
+                 "y":2.5
+                }, 
+                {
+                 "height":67,
+                 "id":4,
+                 "name":"",
+                 "rotation":0,
+                 "text":
+                    {
+                     "fontfamily":"Sans Serif",
+                     "pixelsize":11,
+                     "text":"Test:\nWalk on bottom carpet\nResult:\nA series of 2 popups open. A bubble opens. The player cannot move until popup closes.\nWhen the player leaves the zone, the bubble closes.\nIn the console, deprecation warnings MUST be displayed",
+                     "wrap":true
+                    },
+                 "type":"",
+                 "visible":true,
+                 "width":252.438,
+                 "x":-1.71899999999999,
+                 "y":163.5
+                }],
+         "opacity":1,
+         "type":"objectgroup",
+         "visible":true,
+         "x":0,
+         "y":0
+        }],
+ "nextlayerid":8,
+ "nextobjectid":5,
+ "orientation":"orthogonal",
+ "properties":[
+        {
+         "name":"script",
+         "type":"string",
+         "value":"deprecated_script.js"
+        }],
+ "renderorder":"right-down",
+ "tiledversion":"2021.03.23",
+ "tileheight":32,
+ "tilesets":[
+        {
+         "columns":11,
+         "firstgid":1,
+         "image":"tileset1.png",
+         "imageheight":352,
+         "imagewidth":352,
+         "margin":0,
+         "name":"tileset1",
+         "spacing":0,
+         "tilecount":121,
+         "tileheight":32,
+         "tilewidth":32
+        }],
+ "tilewidth":32,
+ "type":"map",
+ "version":1.5,
+ "width":10
+}
\ No newline at end of file
diff --git a/maps/tests/deprecated_script.js b/maps/tests/deprecated_script.js
new file mode 100644
index 00000000..4a889a8a
--- /dev/null
+++ b/maps/tests/deprecated_script.js
@@ -0,0 +1,79 @@
+console.log('SCRIPT LAUNCHED');
+//WA.sendChatMessage('Hi, my name is Poly and I repeat what you say!', 'Poly Parrot');
+var isFirstTimeTuto = false;
+var textFirstPopup = 'Hey ! This is how to open start a discussion with someone ! You can be 4 max in a booble';
+var textSecondPopup = 'You can also use the chat to communicate ! ';
+var targetObjectTutoBubble ='myPopup1';
+var targetObjectTutoChat ='myPopup2';
+var popUpExplanation = undefined;
+function launchTuto (){
+        WA.openPopup(targetObjectTutoBubble, textFirstPopup, [
+            {
+                label: "Next",
+                className: "popUpElement",
+                callback: (popup) => {
+                    popup.close();
+
+                    WA.openPopup(targetObjectTutoChat, textSecondPopup, [
+                        {
+                            label: "Open Chat",
+                            className: "popUpElement",
+                            callback: (popup1) => {
+                                WA.sendChatMessage("Hey you can talk here too ! ", 'WA Guide');
+                                popup1.close();
+                                WA.restorePlayerControls();
+                            }
+                        }
+
+                    ])
+                }
+            }
+        ]);
+        WA.disablePlayerControls();
+
+}
+WA.onChatMessage((message => {
+    console.log('CHAT MESSAGE RECEIVED BY SCRIPT');
+    WA.sendChatMessage('Poly Parrot says: "'+message+'"', 'Poly Parrot');
+}));
+
+WA.onEnterZone('myTrigger', () => {
+    WA.sendChatMessage("Don't step on my carpet!", 'Poly Parrot');
+})
+
+WA.onLeaveZone('popupZone', () => {
+})
+
+WA.onEnterZone('notExist', () => {
+    WA.sendChatMessage("YOU SHOULD NEVER SEE THIS", 'Poly Parrot');
+})
+
+WA.onEnterZone('popupZone', () => {
+    WA.displayBubble();
+    if (!isFirstTimeTuto) {
+        isFirstTimeTuto = true;
+        launchTuto();
+    }
+     else popUpExplanation =  WA.openPopup(targetObjectTutoChat,'Do you want to review the explanation ? ', [
+        {
+            label: "No",
+            className: "popUpElementReviewexplanation",
+            callback: (popup) => {
+                popup.close();
+            }
+        },
+        {
+            label: "Yes",
+            className: "popUpElementReviewexplanation",
+            callback: (popup) => {
+                popup.close();
+                launchTuto();
+            }
+        }
+    ])
+});
+
+WA.onLeaveZone('popupZone', () => {
+    if (popUpExplanation !== undefined) popUpExplanation.close();
+    WA.removeBubble();
+})
diff --git a/maps/tests/index.html b/maps/tests/index.html
index af70151e..2a27e78f 100644
--- a/maps/tests/index.html
+++ b/maps/tests/index.html
@@ -42,12 +42,12 @@
                     <a href="#" class="testLink" data-testmap="script_api.json" target="_blank">Testing scripting API with a script</a>
                 </td>
             </tr>
-			  <tr>
+            <tr>
                 <td>
-                    <input type="radio" name="test-scripting-api"> Success <input type="radio" name="test-scripting-api"> Failure <input type="radio" name="test-scripting-api" checked> Pending
+                    <input type="radio" name="test-scripting-api-gotopage"> Success <input type="radio" name="test-scripting-api-gotopage"> Failure <input type="radio" name="test-scripting-api-gotopage" checked> Pending
                 </td>
                 <td>
-                    <a href="#" class="testLink" data-testmap="goToPage.json" target="_blank">Testing scripting API with a script</a>
+                    <a href="#" class="testLink" data-testmap="goToPage.json" target="_blank">Testing goToPage script Api</a>
                 </td>
             </tr>
             <tr>
@@ -58,6 +58,14 @@
                     <a href="#" class="testLink" data-testmap="SoundTest.json" target="_blank">Testing scripting API loadSound() function</a>
                 </td>
             </tr>
+            <tr>
+                <td>
+                    <input type="radio" name="test-scripting-deprecated"> Success <input type="radio" name="test-scripting-deprecated"> Failure <input type="radio" name="test-scripting-deprecated" checked> Pending
+                </td>
+                <td>
+                    <a href="#" class="testLink" data-testmap="deprecated_functions.json" target="_blank">Testing scripting API deprecated function</a>
+                </td>
+            </tr>
             <tr>
                 <td>
                     <input type="radio" name="test-autoresize"> Success <input type="radio" name="test-autoresize"> Failure <input type="radio" name="test-autoresize" checked> Pending
diff --git a/maps/tests/script.js b/maps/tests/script.js
index 4a889a8a..b300700f 100644
--- a/maps/tests/script.js
+++ b/maps/tests/script.js
@@ -7,21 +7,21 @@ var targetObjectTutoBubble ='myPopup1';
 var targetObjectTutoChat ='myPopup2';
 var popUpExplanation = undefined;
 function launchTuto (){
-        WA.openPopup(targetObjectTutoBubble, textFirstPopup, [
+        WA.ui.openPopup(targetObjectTutoBubble, textFirstPopup, [
             {
                 label: "Next",
                 className: "popUpElement",
                 callback: (popup) => {
                     popup.close();
 
-                    WA.openPopup(targetObjectTutoChat, textSecondPopup, [
+                    WA.ui.openPopup(targetObjectTutoChat, textSecondPopup, [
                         {
                             label: "Open Chat",
                             className: "popUpElement",
                             callback: (popup1) => {
-                                WA.sendChatMessage("Hey you can talk here too ! ", 'WA Guide');
+                                WA.chat.sendChatMessage("Hey you can talk here too ! ", 'WA Guide');
                                 popup1.close();
-                                WA.restorePlayerControls();
+                                WA.controls.restorePlayerControls();
                             }
                         }
 
@@ -29,32 +29,32 @@ function launchTuto (){
                 }
             }
         ]);
-        WA.disablePlayerControls();
+        WA.controls.disablePlayerControls();
 
 }
-WA.onChatMessage((message => {
+WA.chat.onChatMessage((message => {
     console.log('CHAT MESSAGE RECEIVED BY SCRIPT');
-    WA.sendChatMessage('Poly Parrot says: "'+message+'"', 'Poly Parrot');
+    WA.chat.sendChatMessage('Poly Parrot says: "'+message+'"', 'Poly Parrot');
 }));
 
-WA.onEnterZone('myTrigger', () => {
-    WA.sendChatMessage("Don't step on my carpet!", 'Poly Parrot');
+WA.room.onEnterZone('myTrigger', () => {
+    WA.chat.sendChatMessage("Don't step on my carpet!", 'Poly Parrot');
 })
 
-WA.onLeaveZone('popupZone', () => {
+WA.room.onLeaveZone('popupZone', () => {
 })
 
-WA.onEnterZone('notExist', () => {
-    WA.sendChatMessage("YOU SHOULD NEVER SEE THIS", 'Poly Parrot');
+WA.room.onEnterZone('notExist', () => {
+    WA.chat.sendChatMessage("YOU SHOULD NEVER SEE THIS", 'Poly Parrot');
 })
 
-WA.onEnterZone('popupZone', () => {
-    WA.displayBubble();
+WA.room.onEnterZone('popupZone', () => {
+    WA.ui.displayBubble();
     if (!isFirstTimeTuto) {
         isFirstTimeTuto = true;
         launchTuto();
     }
-     else popUpExplanation =  WA.openPopup(targetObjectTutoChat,'Do you want to review the explanation ? ', [
+     else popUpExplanation =  WA.ui.openPopup(targetObjectTutoChat,'Do you want to review the explanation ? ', [
         {
             label: "No",
             className: "popUpElementReviewexplanation",
@@ -73,7 +73,7 @@ WA.onEnterZone('popupZone', () => {
     ])
 });
 
-WA.onLeaveZone('popupZone', () => {
+WA.room.onLeaveZone('popupZone', () => {
     if (popUpExplanation !== undefined) popUpExplanation.close();
-    WA.removeBubble();
+    WA.ui.removeBubble();
 })
diff --git a/pusher/package.json b/pusher/package.json
index 7edf3d5d..63188032 100644
--- a/pusher/package.json
+++ b/pusher/package.json
@@ -38,23 +38,16 @@
   "homepage": "https://github.com/thecodingmachine/workadventure#readme",
   "dependencies": {
     "axios": "^0.21.1",
-    "body-parser": "^1.19.0",
     "busboy": "^0.3.1",
     "circular-json": "^0.5.9",
     "debug": "^4.3.1",
     "generic-type-guard": "^3.2.0",
     "google-protobuf": "^3.13.0",
     "grpc": "^1.24.4",
-    "http-status-codes": "^1.4.0",
-    "iterall": "^1.3.0",
     "jsonwebtoken": "^8.5.1",
     "mkdirp": "^1.0.4",
-    "multer": "^1.4.2",
     "prom-client": "^12.0.0",
     "query-string": "^6.13.3",
-    "systeminformation": "^4.31.1",
-    "ts-node-dev": "^1.0.0-pre.44",
-    "typescript": "^3.8.3",
     "uWebSockets.js": "uNetworking/uWebSockets.js#v18.5.0",
     "uuidv4": "^6.0.7"
   },
@@ -71,6 +64,8 @@
     "@typescript-eslint/eslint-plugin": "^2.26.0",
     "@typescript-eslint/parser": "^2.26.0",
     "eslint": "^6.8.0",
-    "jasmine": "^3.5.0"
+    "jasmine": "^3.5.0",
+    "ts-node-dev": "^1.0.0-pre.44",
+    "typescript": "^3.8.3"
   }
 }
diff --git a/pusher/yarn.lock b/pusher/yarn.lock
index 8af760c8..88a20475 100644
--- a/pusher/yarn.lock
+++ b/pusher/yarn.lock
@@ -257,11 +257,6 @@ anymatch@~3.1.1:
     normalize-path "^3.0.0"
     picomatch "^2.0.4"
 
-append-field@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/append-field/-/append-field-1.0.0.tgz#1e3440e915f0b1203d23748e78edd7b9b5b43e56"
-  integrity sha1-HjRA6RXwsSA9I3SOeO3XubW0PlY=
-
 aproba@^1.0.3:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/aproba/-/aproba-1.2.0.tgz#6802e6264efd18c790a1b0d517f0f2627bf2c94a"
@@ -370,22 +365,6 @@ bintrees@1.0.1:
   resolved "https://registry.yarnpkg.com/bintrees/-/bintrees-1.0.1.tgz#0e655c9b9c2435eaab68bf4027226d2b55a34524"
   integrity sha1-DmVcm5wkNeqraL9AJyJtK1WjRSQ=
 
-body-parser@^1.19.0:
-  version "1.19.0"
-  resolved "https://registry.yarnpkg.com/body-parser/-/body-parser-1.19.0.tgz#96b2709e57c9c4e09a6fd66a8fd979844f69f08a"
-  integrity sha512-dhEPs72UPbDnAQJ9ZKMNTP6ptJaionhP5cBb541nXPlW60Jepo9RV/a4fX4XWW9CuFNK22krhrj1+rgzifNCsw==
-  dependencies:
-    bytes "3.1.0"
-    content-type "~1.0.4"
-    debug "2.6.9"
-    depd "~1.1.2"
-    http-errors "1.7.2"
-    iconv-lite "0.4.24"
-    on-finished "~2.3.0"
-    qs "6.7.0"
-    raw-body "2.4.0"
-    type-is "~1.6.17"
-
 brace-expansion@^1.1.7:
   version "1.1.11"
   resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
@@ -427,14 +406,6 @@ buffer-from@^1.0.0:
   resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
   integrity sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==
 
-busboy@^0.2.11:
-  version "0.2.14"
-  resolved "https://registry.yarnpkg.com/busboy/-/busboy-0.2.14.tgz#6c2a622efcf47c57bbbe1e2a9c37ad36c7925453"
-  integrity sha1-bCpiLvz0fFe7vh4qnDetNseSVFM=
-  dependencies:
-    dicer "0.2.5"
-    readable-stream "1.1.x"
-
 busboy@^0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/busboy/-/busboy-0.3.1.tgz#170899274c5bf38aae27d5c62b71268cd585fd1b"
@@ -449,11 +420,6 @@ bytebuffer@~5:
   dependencies:
     long "~3"
 
-bytes@3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/bytes/-/bytes-3.1.0.tgz#f6cf7933a360e0588fa9fde85651cdc7f805d1f6"
-  integrity sha512-zauLjrfCG+xvoyaqLoV8bLVXXNGC4JqlxFCutSDWA6fJrTo2ZuvLYTqZ7aHBLZSMOopbzwv8f+wZcVzfVTI2Dg==
-
 cache-base@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/cache-base/-/cache-base-1.0.1.tgz#0a7f46416831c8b662ee36fe4e7c59d76f666ab2"
@@ -622,26 +588,11 @@ concat-map@0.0.1:
   resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
   integrity sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=
 
-concat-stream@^1.5.2:
-  version "1.6.2"
-  resolved "https://registry.yarnpkg.com/concat-stream/-/concat-stream-1.6.2.tgz#904bdf194cd3122fc675c77fc4ac3d4ff0fd1a34"
-  integrity sha512-27HBghJxjiZtIk3Ycvn/4kbJk/1uZuJFfuPEns6LaEvpvG1f0hTea8lilrouyo9mVc2GWdcEZ8OLoGmSADlrCw==
-  dependencies:
-    buffer-from "^1.0.0"
-    inherits "^2.0.3"
-    readable-stream "^2.2.2"
-    typedarray "^0.0.6"
-
 console-control-strings@^1.0.0, console-control-strings@~1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/console-control-strings/-/console-control-strings-1.1.0.tgz#3d7cf4464db6446ea644bf4b39507f9851008e8e"
   integrity sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=
 
-content-type@~1.0.4:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/content-type/-/content-type-1.0.4.tgz#e138cc75e040c727b1966fe5e5f8c9aee256fe3b"
-  integrity sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA==
-
 copy-descriptor@^0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/copy-descriptor/-/copy-descriptor-0.1.1.tgz#676f6eb3c39997c2ee1ac3a924fd6124748f578d"
@@ -678,7 +629,7 @@ dateformat@~1.0.4-1.2.3:
     get-stdin "^4.0.1"
     meow "^3.3.0"
 
-debug@2.6.9, debug@^2.2.0, debug@^2.3.3:
+debug@^2.2.0, debug@^2.3.3:
   version "2.6.9"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
   integrity sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==
@@ -753,24 +704,11 @@ delegates@^1.0.0:
   resolved "https://registry.yarnpkg.com/delegates/-/delegates-1.0.0.tgz#84c6e159b81904fdca59a0ef44cd870d31250f9a"
   integrity sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=
 
-depd@~1.1.2:
-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/depd/-/depd-1.1.2.tgz#9bcd52e14c097763e749b274c4346ed2e560b5a9"
-  integrity sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak=
-
 detect-libc@^1.0.2:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/detect-libc/-/detect-libc-1.0.3.tgz#fa137c4bd698edf55cd5cd02ac559f91a4c4ba9b"
   integrity sha1-+hN8S9aY7fVc1c0CrFWfkaTEups=
 
-dicer@0.2.5:
-  version "0.2.5"
-  resolved "https://registry.yarnpkg.com/dicer/-/dicer-0.2.5.tgz#5996c086bb33218c812c090bddc09cd12facb70f"
-  integrity sha1-WZbAhrszIYyBLAkL3cCc0S+stw8=
-  dependencies:
-    readable-stream "1.1.x"
-    streamsearch "0.1.2"
-
 dicer@0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/dicer/-/dicer-0.3.0.tgz#eacd98b3bfbf92e8ab5c2fdb71aaac44bb06b872"
@@ -804,11 +742,6 @@ ecdsa-sig-formatter@1.0.11:
   dependencies:
     safe-buffer "^5.0.1"
 
-ee-first@1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
-  integrity sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0=
-
 emoji-regex@^7.0.1:
   version "7.0.3"
   resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-7.0.3.tgz#933a04052860c85e83c122479c4748a8e4c72156"
@@ -1255,28 +1188,12 @@ hosted-git-info@^2.1.4:
   resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.8.9.tgz#dffc0bf9a21c02209090f2aa69429e1414daf3f9"
   integrity sha512-mxIDAb9Lsm6DoOJ7xH+5+X4y1LU/4Hi50L9C5sIswK3JzULS4bwk1FvjdBgvYR4bzT4tuUQiC15FE2f5HbLvYw==
 
-http-errors@1.7.2:
-  version "1.7.2"
-  resolved "https://registry.yarnpkg.com/http-errors/-/http-errors-1.7.2.tgz#4f5029cf13239f31036e5b2e55292bcfbcc85c8f"
-  integrity sha512-uUQBt3H/cSIVfch6i1EuPNy/YsRSOUBXTVfZ+yR7Zjez3qjBz6i9+i4zjNaoqcoFVI4lQJ5plg63TvGfRSDCRg==
-  dependencies:
-    depd "~1.1.2"
-    inherits "2.0.3"
-    setprototypeof "1.1.1"
-    statuses ">= 1.5.0 < 2"
-    toidentifier "1.0.0"
-
 http-status-codes@*:
   version "2.1.4"
   resolved "https://registry.yarnpkg.com/http-status-codes/-/http-status-codes-2.1.4.tgz#453d99b4bd9424254c4f6a9a3a03715923052798"
   integrity sha512-MZVIsLKGVOVE1KEnldppe6Ij+vmemMuApDfjhVSLzyYP+td0bREEYyAoIw9yFePoBXManCuBqmiNP5FqJS5Xkg==
 
-http-status-codes@^1.4.0:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/http-status-codes/-/http-status-codes-1.4.0.tgz#6e4c15d16ff3a9e2df03b89f3a55e1aae05fb477"
-  integrity sha512-JrT3ua+WgH8zBD3HEJYbeEgnuQaAnUeRRko/YojPAJjGmIfGD3KPU/asLdsLwKjfxOmQe5nXMQ0pt/7MyapVbQ==
-
-iconv-lite@0.4.24, iconv-lite@^0.4.24, iconv-lite@^0.4.4:
+iconv-lite@^0.4.24, iconv-lite@^0.4.4:
   version "0.4.24"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.24.tgz#2022b4b25fbddc21d2f524974a474aafe733908b"
   integrity sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==
@@ -1323,16 +1240,11 @@ inflight@^1.0.4:
     once "^1.3.0"
     wrappy "1"
 
-inherits@2, inherits@^2.0.3, inherits@~2.0.1, inherits@~2.0.3:
+inherits@2, inherits@~2.0.3:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
   integrity sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==
 
-inherits@2.0.3:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
-  integrity sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=
-
 ini@~1.3.0:
   version "1.3.7"
   resolved "https://registry.yarnpkg.com/ini/-/ini-1.3.7.tgz#a09363e1911972ea16d7a8851005d84cf09a9a84"
@@ -1507,11 +1419,6 @@ is-windows@^1.0.2:
   resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.2.tgz#d1850eb9791ecd18e6182ce12a30f396634bb19d"
   integrity sha512-eXK1UInq2bPmjyX6e3VHIzMLobc4J94i4AWn+Hpq3OU5KkrRC96OAcR3PRJ/pGu6m8TRnBHP9dkXQVsT/COVIA==
 
-isarray@0.0.1:
-  version "0.0.1"
-  resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
-  integrity sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8=
-
 isarray@1.0.0, isarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
@@ -1534,11 +1441,6 @@ isobject@^3.0.0, isobject@^3.0.1:
   resolved "https://registry.yarnpkg.com/isobject/-/isobject-3.0.1.tgz#4e431e92b11a9731636aa1f9c8d1ccbcfdab78df"
   integrity sha1-TkMekrEalzFjaqH5yNHMvP2reN8=
 
-iterall@^1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/iterall/-/iterall-1.3.0.tgz#afcb08492e2915cbd8a0884eb93a8c94d0d72fea"
-  integrity sha512-QZ9qOMdF+QLHxy1QIpUHUU1D5pS2CG2P69LF6L6CPjPYA/XMOmKV3PZpawHoAjHNyB0swdVTRxdYT4tbBbxqwg==
-
 jasmine-core@~3.6.0:
   version "3.6.0"
   resolved "https://registry.yarnpkg.com/jasmine-core/-/jasmine-core-3.6.0.tgz#491f3bb23941799c353ceb7a45b38a950ebc5a20"
@@ -1743,11 +1645,6 @@ map-visit@^1.0.0:
   dependencies:
     object-visit "^1.0.0"
 
-media-typer@0.3.0:
-  version "0.3.0"
-  resolved "https://registry.yarnpkg.com/media-typer/-/media-typer-0.3.0.tgz#8710d7af0aa626f8fffa1ce00168545263255748"
-  integrity sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g=
-
 meow@^3.3.0:
   version "3.7.0"
   resolved "https://registry.yarnpkg.com/meow/-/meow-3.7.0.tgz#72cb668b425228290abbfa856892587308a801fb"
@@ -1788,18 +1685,6 @@ micromatch@^3.1.10:
     snapdragon "^0.8.1"
     to-regex "^3.0.2"
 
-mime-db@1.44.0:
-  version "1.44.0"
-  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.44.0.tgz#fa11c5eb0aca1334b4233cb4d52f10c5a6272f92"
-  integrity sha512-/NOTfLrsPBVeH7YtFPgsVWveuL+4SjjYxaQ1xtM1KMFj7HdxlBlxeyNLzhyJVx7r4rZGJAZ/6lkKCitSc/Nmpg==
-
-mime-types@~2.1.24:
-  version "2.1.27"
-  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.27.tgz#47949f98e279ea53119f5722e0f34e529bec009f"
-  integrity sha512-JIhqnCasI9yD+SsmkquHBxTSEuZdQX5BuQnS2Vc7puQQQ+8yiP5AY5uWhpdv4YL4VM5c6iliiYWPgJ/nJQLp7w==
-  dependencies:
-    mime-db "1.44.0"
-
 mimic-fn@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-2.1.0.tgz#7ed2c2ccccaf84d3ffcb7a69b57711fc2083401b"
@@ -1862,20 +1747,6 @@ ms@2.1.2, ms@^2.1.1:
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
   integrity sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==
 
-multer@^1.4.2:
-  version "1.4.2"
-  resolved "https://registry.yarnpkg.com/multer/-/multer-1.4.2.tgz#2f1f4d12dbaeeba74cb37e623f234bf4d3d2057a"
-  integrity sha512-xY8pX7V+ybyUpbYMxtjM9KAiD9ixtg5/JkeKUTD6xilfDv0vzzOFcCp4Ljb1UU3tSOM3VTZtKo63OmzOrGi3Cg==
-  dependencies:
-    append-field "^1.0.0"
-    busboy "^0.2.11"
-    concat-stream "^1.5.2"
-    mkdirp "^0.5.1"
-    object-assign "^4.1.1"
-    on-finished "^2.3.0"
-    type-is "^1.6.4"
-    xtend "^4.0.0"
-
 mute-stream@0.0.8:
   version "0.0.8"
   resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.8.tgz#1630c42b2251ff81e2a283de96a5497ea92e5e0d"
@@ -1997,7 +1868,7 @@ number-is-nan@^1.0.0:
   resolved "https://registry.yarnpkg.com/number-is-nan/-/number-is-nan-1.0.1.tgz#097b602b53422a522c1afb8790318336941a011d"
   integrity sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=
 
-object-assign@^4.0.1, object-assign@^4.1.0, object-assign@^4.1.1:
+object-assign@^4.0.1, object-assign@^4.1.0:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
   integrity sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=
@@ -2025,13 +1896,6 @@ object.pick@^1.3.0:
   dependencies:
     isobject "^3.0.1"
 
-on-finished@^2.3.0, on-finished@~2.3.0:
-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/on-finished/-/on-finished-2.3.0.tgz#20f1336481b083cd75337992a16971aa2d906947"
-  integrity sha1-IPEzZIGwg811M3mSoWlxqi2QaUc=
-  dependencies:
-    ee-first "1.1.1"
-
 once@^1.3.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
@@ -2207,11 +2071,6 @@ punycode@^2.1.0:
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
   integrity sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==
 
-qs@6.7.0:
-  version "6.7.0"
-  resolved "https://registry.yarnpkg.com/qs/-/qs-6.7.0.tgz#41dc1a015e3d581f1621776be31afb2876a9b1bc"
-  integrity sha512-VCdBRNFTX1fyE7Nb6FYoURo/SPe62QCaAyzJvUjwRaIsc+NePBEniHlvxFmmX56+HZphIGtV0XeCirBtpDrTyQ==
-
 query-string@^6.13.3:
   version "6.13.4"
   resolved "https://registry.yarnpkg.com/query-string/-/query-string-6.13.4.tgz#b35a9a3bd4955bce55f94feb0e819b3d0be6f66f"
@@ -2221,16 +2080,6 @@ query-string@^6.13.3:
     split-on-first "^1.0.0"
     strict-uri-encode "^2.0.0"
 
-raw-body@2.4.0:
-  version "2.4.0"
-  resolved "https://registry.yarnpkg.com/raw-body/-/raw-body-2.4.0.tgz#a1ce6fb9c9bc356ca52e89256ab59059e13d0332"
-  integrity sha512-4Oz8DUIwdvoa5qMJelxipzi/iJIi40O5cGV1wNYp5hvZP8ZN0T+jiNkL0QepXs+EsQ9XJ8ipEDoiH70ySUJP3Q==
-  dependencies:
-    bytes "3.1.0"
-    http-errors "1.7.2"
-    iconv-lite "0.4.24"
-    unpipe "1.0.0"
-
 rc@^1.2.7:
   version "1.2.8"
   resolved "https://registry.yarnpkg.com/rc/-/rc-1.2.8.tgz#cd924bf5200a075b83c188cd6b9e211b7fc0d3ed"
@@ -2258,17 +2107,7 @@ read-pkg@^1.0.0:
     normalize-package-data "^2.3.2"
     path-type "^1.0.0"
 
-readable-stream@1.1.x:
-  version "1.1.14"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-1.1.14.tgz#7cf4c54ef648e3813084c636dd2079e166c081d9"
-  integrity sha1-fPTFTvZI44EwhMY23SB54WbAgdk=
-  dependencies:
-    core-util-is "~1.0.0"
-    inherits "~2.0.1"
-    isarray "0.0.1"
-    string_decoder "~0.10.x"
-
-readable-stream@^2.0.6, readable-stream@^2.2.2:
+readable-stream@^2.0.6:
   version "2.3.7"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.7.tgz#1eca1cf711aef814c04f62252a36a62f6cb23b57"
   integrity sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==
@@ -2444,11 +2283,6 @@ set-value@^2.0.0, set-value@^2.0.1:
     is-plain-object "^2.0.3"
     split-string "^3.0.1"
 
-setprototypeof@1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/setprototypeof/-/setprototypeof-1.1.1.tgz#7e95acb24aa92f5885e0abef5ba131330d4ae683"
-  integrity sha512-JvdAWfbXeIGaZ9cILp38HntZSFSo3mWg6xGcJJsd+d4aRMOqauag1C63dJfDw7OaMYwEbHMOxEZ1lqVRYP2OAw==
-
 shebang-command@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/shebang-command/-/shebang-command-1.2.0.tgz#44aac65b695b03398968c39f363fee5deafdf1ea"
@@ -2590,11 +2424,6 @@ static-extend@^0.1.1:
     define-property "^0.2.5"
     object-copy "^0.1.0"
 
-"statuses@>= 1.5.0 < 2":
-  version "1.5.0"
-  resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.5.0.tgz#161c7dac177659fd9811f43771fa99381478628c"
-  integrity sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow=
-
 streamsearch@0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/streamsearch/-/streamsearch-0.1.2.tgz#808b9d0e56fc273d809ba57338e929919a1a9f1a"
@@ -2640,11 +2469,6 @@ string-width@^4.1.0:
     is-fullwidth-code-point "^3.0.0"
     strip-ansi "^6.0.0"
 
-string_decoder@~0.10.x:
-  version "0.10.31"
-  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-0.10.31.tgz#62e203bc41766c6c28c9fc84301dab1c5310fa94"
-  integrity sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=
-
 string_decoder@~1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.1.1.tgz#9cf1611ba62685d7030ae9e4ba34149c3af03fc8"
@@ -2723,11 +2547,6 @@ supports-color@^7.1.0:
   dependencies:
     has-flag "^4.0.0"
 
-systeminformation@^4.31.1:
-  version "4.31.1"
-  resolved "https://registry.yarnpkg.com/systeminformation/-/systeminformation-4.31.1.tgz#2e02c26987494d4b6a4d2d83138724593bc98d50"
-  integrity sha512-dVCDWNMN8ncMZo5vbMCA5dpAdMgzafK2ucuJy5LFmGtp1cG6farnPg8QNvoOSky9SkFoEX1Aw0XhcOFV6TnLYA==
-
 table@^5.2.3:
   version "5.4.6"
   resolved "https://registry.yarnpkg.com/table/-/table-5.4.6.tgz#1292d19500ce3f86053b05f0e8e7e4a3bb21079e"
@@ -2807,11 +2626,6 @@ to-regex@^3.0.1, to-regex@^3.0.2:
     regex-not "^1.0.2"
     safe-regex "^1.1.0"
 
-toidentifier@1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/toidentifier/-/toidentifier-1.0.0.tgz#7e1be3470f1e77948bc43d94a3c8f4d7752ba553"
-  integrity sha512-yaOH/Pk/VEhBWWTlhI+qXxDFXlejDGcQipMlyxda9nthulaxLZUNcUqFxokp0vcYnvteJln5FNQDRrxj3YcbVw==
-
 tree-kill@^1.2.2:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/tree-kill/-/tree-kill-1.2.2.tgz#4ca09a9092c88b73a7cdc5e8a01b507b0790a0cc"
@@ -2889,19 +2703,6 @@ type-fest@^0.8.1:
   resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.8.1.tgz#09e249ebde851d3b1e48d27c105444667f17b83d"
   integrity sha512-4dbzIzqvjtgiM5rw1k5rEHtBANKmdudhGyBEajN01fEyhaAIhsoKNy6y7+IN93IfpFtwY9iqi7kD+xwKhQsNJA==
 
-type-is@^1.6.4, type-is@~1.6.17:
-  version "1.6.18"
-  resolved "https://registry.yarnpkg.com/type-is/-/type-is-1.6.18.tgz#4e552cd05df09467dcbc4ef739de89f2cf37c131"
-  integrity sha512-TkRKr9sUTxEH8MdfuCSP7VizJyzRNMjj2J2do2Jr3Kym598JVdEksuzPQCnlFPW4ky9Q+iA+ma9BGm06XQBy8g==
-  dependencies:
-    media-typer "0.3.0"
-    mime-types "~2.1.24"
-
-typedarray@^0.0.6:
-  version "0.0.6"
-  resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
-  integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
-
 typescript@^3.8.3:
   version "3.9.7"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.7.tgz#98d600a5ebdc38f40cb277522f12dc800e9e25fa"
@@ -2921,11 +2722,6 @@ union-value@^1.0.0:
     is-extendable "^0.1.1"
     set-value "^2.0.1"
 
-unpipe@1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/unpipe/-/unpipe-1.0.0.tgz#b2bf4ee8514aae6165b4817829d21b2ef49904ec"
-  integrity sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw=
-
 unset-value@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/unset-value/-/unset-value-1.0.0.tgz#8376873f7d2335179ffb1e6fc3a8ed0dfc8ab559"
diff --git a/uploader/package.json b/uploader/package.json
index 27e1d146..62b55c07 100644
--- a/uploader/package.json
+++ b/uploader/package.json
@@ -37,18 +37,12 @@
   },
   "homepage": "https://github.com/thecodingmachine/workadventure#readme",
   "dependencies": {
-    "body-parser": "^1.19.0",
     "busboy": "^0.3.1",
     "debug": "^4.3.1",
-    "http-status-codes": "^1.4.0",
-    "iterall": "^1.3.0",
     "jsonwebtoken": "^8.5.1",
-    "multer": "^1.4.2",
     "mkdirp": "^1.0.4",
     "prom-client": "^12.0.0",
     "query-string": "^6.13.3",
-    "ts-node-dev": "^1.0.0-pre.44",
-    "typescript": "^3.8.3",
     "uWebSockets.js": "uNetworking/uWebSockets.js#v18.5.0",
     "uuidv4": "^6.0.7"
   },
@@ -64,6 +58,8 @@
     "@types/mkdirp": "^1.0.1",
     "@types/uuidv4": "^5.0.0",
     "eslint": "^6.8.0",
-    "jasmine": "^3.5.0"
+    "jasmine": "^3.5.0",
+    "ts-node-dev": "^1.0.0-pre.44",
+    "typescript": "^3.8.3"
   }
 }
diff --git a/uploader/yarn.lock b/uploader/yarn.lock
index 88f2744f..897bd82d 100644
--- a/uploader/yarn.lock
+++ b/uploader/yarn.lock
@@ -205,11 +205,6 @@ anymatch@~3.1.1:
     normalize-path "^3.0.0"
     picomatch "^2.0.4"
 
-append-field@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/append-field/-/append-field-1.0.0.tgz#1e3440e915f0b1203d23748e78edd7b9b5b43e56"
-  integrity sha1-HjRA6RXwsSA9I3SOeO3XubW0PlY=
-
 arg@^4.1.0:
   version "4.1.3"
   resolved "https://registry.yarnpkg.com/arg/-/arg-4.1.3.tgz#269fc7ad5b8e42cb63c896d5666017261c144089"
@@ -247,22 +242,6 @@ bintrees@1.0.1:
   resolved "https://registry.yarnpkg.com/bintrees/-/bintrees-1.0.1.tgz#0e655c9b9c2435eaab68bf4027226d2b55a34524"
   integrity sha1-DmVcm5wkNeqraL9AJyJtK1WjRSQ=
 
-body-parser@^1.19.0:
-  version "1.19.0"
-  resolved "https://registry.yarnpkg.com/body-parser/-/body-parser-1.19.0.tgz#96b2709e57c9c4e09a6fd66a8fd979844f69f08a"
-  integrity sha512-dhEPs72UPbDnAQJ9ZKMNTP6ptJaionhP5cBb541nXPlW60Jepo9RV/a4fX4XWW9CuFNK22krhrj1+rgzifNCsw==
-  dependencies:
-    bytes "3.1.0"
-    content-type "~1.0.4"
-    debug "2.6.9"
-    depd "~1.1.2"
-    http-errors "1.7.2"
-    iconv-lite "0.4.24"
-    on-finished "~2.3.0"
-    qs "6.7.0"
-    raw-body "2.4.0"
-    type-is "~1.6.17"
-
 brace-expansion@^1.1.7:
   version "1.1.11"
   resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
@@ -288,14 +267,6 @@ buffer-from@^1.0.0:
   resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
   integrity sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==
 
-busboy@^0.2.11:
-  version "0.2.14"
-  resolved "https://registry.yarnpkg.com/busboy/-/busboy-0.2.14.tgz#6c2a622efcf47c57bbbe1e2a9c37ad36c7925453"
-  integrity sha1-bCpiLvz0fFe7vh4qnDetNseSVFM=
-  dependencies:
-    dicer "0.2.5"
-    readable-stream "1.1.x"
-
 busboy@^0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/busboy/-/busboy-0.3.1.tgz#170899274c5bf38aae27d5c62b71268cd585fd1b"
@@ -303,11 +274,6 @@ busboy@^0.3.1:
   dependencies:
     dicer "0.3.0"
 
-bytes@3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/bytes/-/bytes-3.1.0.tgz#f6cf7933a360e0588fa9fde85651cdc7f805d1f6"
-  integrity sha512-zauLjrfCG+xvoyaqLoV8bLVXXNGC4JqlxFCutSDWA6fJrTo2ZuvLYTqZ7aHBLZSMOopbzwv8f+wZcVzfVTI2Dg==
-
 callsites@^3.0.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/callsites/-/callsites-3.1.0.tgz#b3630abd8943432f54b3f0519238e33cd7df2f73"
@@ -404,26 +370,6 @@ concat-map@0.0.1:
   resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
   integrity sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=
 
-concat-stream@^1.5.2:
-  version "1.6.2"
-  resolved "https://registry.yarnpkg.com/concat-stream/-/concat-stream-1.6.2.tgz#904bdf194cd3122fc675c77fc4ac3d4ff0fd1a34"
-  integrity sha512-27HBghJxjiZtIk3Ycvn/4kbJk/1uZuJFfuPEns6LaEvpvG1f0hTea8lilrouyo9mVc2GWdcEZ8OLoGmSADlrCw==
-  dependencies:
-    buffer-from "^1.0.0"
-    inherits "^2.0.3"
-    readable-stream "^2.2.2"
-    typedarray "^0.0.6"
-
-content-type@~1.0.4:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/content-type/-/content-type-1.0.4.tgz#e138cc75e040c727b1966fe5e5f8c9aee256fe3b"
-  integrity sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA==
-
-core-util-is@~1.0.0:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
-  integrity sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=
-
 create-require@^1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/create-require/-/create-require-1.1.1.tgz#c1d7e8f1e5f6cfc9ff65f9cd352d37348756c333"
@@ -455,13 +401,6 @@ dateformat@~1.0.4-1.2.3:
     get-stdin "^4.0.1"
     meow "^3.3.0"
 
-debug@2.6.9:
-  version "2.6.9"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
-  integrity sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==
-  dependencies:
-    ms "2.0.0"
-
 debug@^4.0.1, debug@^4.1.1, debug@^4.3.1:
   version "4.3.1"
   resolved "https://registry.yarnpkg.com/debug/-/debug-4.3.1.tgz#f0d229c505e0c6d8c49ac553d1b13dc183f6b2ee"
@@ -484,19 +423,6 @@ deep-is@~0.1.3:
   resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
   integrity sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=
 
-depd@~1.1.2:
-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/depd/-/depd-1.1.2.tgz#9bcd52e14c097763e749b274c4346ed2e560b5a9"
-  integrity sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak=
-
-dicer@0.2.5:
-  version "0.2.5"
-  resolved "https://registry.yarnpkg.com/dicer/-/dicer-0.2.5.tgz#5996c086bb33218c812c090bddc09cd12facb70f"
-  integrity sha1-WZbAhrszIYyBLAkL3cCc0S+stw8=
-  dependencies:
-    readable-stream "1.1.x"
-    streamsearch "0.1.2"
-
 dicer@0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/dicer/-/dicer-0.3.0.tgz#eacd98b3bfbf92e8ab5c2fdb71aaac44bb06b872"
@@ -530,11 +456,6 @@ ecdsa-sig-formatter@1.0.11:
   dependencies:
     safe-buffer "^5.0.1"
 
-ee-first@1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
-  integrity sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0=
-
 emoji-regex@^7.0.1:
   version "7.0.3"
   resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-7.0.3.tgz#933a04052860c85e83c122479c4748a8e4c72156"
@@ -815,28 +736,12 @@ hosted-git-info@^2.1.4:
   resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.8.9.tgz#dffc0bf9a21c02209090f2aa69429e1414daf3f9"
   integrity sha512-mxIDAb9Lsm6DoOJ7xH+5+X4y1LU/4Hi50L9C5sIswK3JzULS4bwk1FvjdBgvYR4bzT4tuUQiC15FE2f5HbLvYw==
 
-http-errors@1.7.2:
-  version "1.7.2"
-  resolved "https://registry.yarnpkg.com/http-errors/-/http-errors-1.7.2.tgz#4f5029cf13239f31036e5b2e55292bcfbcc85c8f"
-  integrity sha512-uUQBt3H/cSIVfch6i1EuPNy/YsRSOUBXTVfZ+yR7Zjez3qjBz6i9+i4zjNaoqcoFVI4lQJ5plg63TvGfRSDCRg==
-  dependencies:
-    depd "~1.1.2"
-    inherits "2.0.3"
-    setprototypeof "1.1.1"
-    statuses ">= 1.5.0 < 2"
-    toidentifier "1.0.0"
-
 http-status-codes@*:
   version "2.1.4"
   resolved "https://registry.yarnpkg.com/http-status-codes/-/http-status-codes-2.1.4.tgz#453d99b4bd9424254c4f6a9a3a03715923052798"
   integrity sha512-MZVIsLKGVOVE1KEnldppe6Ij+vmemMuApDfjhVSLzyYP+td0bREEYyAoIw9yFePoBXManCuBqmiNP5FqJS5Xkg==
 
-http-status-codes@^1.4.0:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/http-status-codes/-/http-status-codes-1.4.0.tgz#6e4c15d16ff3a9e2df03b89f3a55e1aae05fb477"
-  integrity sha512-JrT3ua+WgH8zBD3HEJYbeEgnuQaAnUeRRko/YojPAJjGmIfGD3KPU/asLdsLwKjfxOmQe5nXMQ0pt/7MyapVbQ==
-
-iconv-lite@0.4.24, iconv-lite@^0.4.24:
+iconv-lite@^0.4.24:
   version "0.4.24"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.24.tgz#2022b4b25fbddc21d2f524974a474aafe733908b"
   integrity sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==
@@ -876,16 +781,11 @@ inflight@^1.0.4:
     once "^1.3.0"
     wrappy "1"
 
-inherits@2, inherits@^2.0.3, inherits@~2.0.1, inherits@~2.0.3:
+inherits@2:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
   integrity sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==
 
-inherits@2.0.3:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
-  integrity sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=
-
 inquirer@^7.0.0:
   version "7.3.3"
   resolved "https://registry.yarnpkg.com/inquirer/-/inquirer-7.3.3.tgz#04d176b2af04afc157a83fd7c100e98ee0aad003"
@@ -961,26 +861,11 @@ is-utf8@^0.2.0:
   resolved "https://registry.yarnpkg.com/is-utf8/-/is-utf8-0.2.1.tgz#4b0da1442104d1b336340e80797e865cf39f7d72"
   integrity sha1-Sw2hRCEE0bM2NA6AeX6GXPOffXI=
 
-isarray@0.0.1:
-  version "0.0.1"
-  resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
-  integrity sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8=
-
-isarray@~1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
-  integrity sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=
-
 isexe@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/isexe/-/isexe-2.0.0.tgz#e8fbf374dc556ff8947a10dcb0572d633f2cfa10"
   integrity sha1-6PvzdNxVb/iUehDcsFctYz8s+hA=
 
-iterall@^1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/iterall/-/iterall-1.3.0.tgz#afcb08492e2915cbd8a0884eb93a8c94d0d72fea"
-  integrity sha512-QZ9qOMdF+QLHxy1QIpUHUU1D5pS2CG2P69LF6L6CPjPYA/XMOmKV3PZpawHoAjHNyB0swdVTRxdYT4tbBbxqwg==
-
 jasmine-core@~3.6.0:
   version "3.6.0"
   resolved "https://registry.yarnpkg.com/jasmine-core/-/jasmine-core-3.6.0.tgz#491f3bb23941799c353ceb7a45b38a950ebc5a20"
@@ -1134,11 +1019,6 @@ map-obj@^1.0.0, map-obj@^1.0.1:
   resolved "https://registry.yarnpkg.com/map-obj/-/map-obj-1.0.1.tgz#d933ceb9205d82bdcf4886f6742bdc2b4dea146d"
   integrity sha1-2TPOuSBdgr3PSIb2dCvcK03qFG0=
 
-media-typer@0.3.0:
-  version "0.3.0"
-  resolved "https://registry.yarnpkg.com/media-typer/-/media-typer-0.3.0.tgz#8710d7af0aa626f8fffa1ce00168545263255748"
-  integrity sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g=
-
 meow@^3.3.0:
   version "3.7.0"
   resolved "https://registry.yarnpkg.com/meow/-/meow-3.7.0.tgz#72cb668b425228290abbfa856892587308a801fb"
@@ -1155,18 +1035,6 @@ meow@^3.3.0:
     redent "^1.0.0"
     trim-newlines "^1.0.0"
 
-mime-db@1.44.0:
-  version "1.44.0"
-  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.44.0.tgz#fa11c5eb0aca1334b4233cb4d52f10c5a6272f92"
-  integrity sha512-/NOTfLrsPBVeH7YtFPgsVWveuL+4SjjYxaQ1xtM1KMFj7HdxlBlxeyNLzhyJVx7r4rZGJAZ/6lkKCitSc/Nmpg==
-
-mime-types@~2.1.24:
-  version "2.1.27"
-  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.27.tgz#47949f98e279ea53119f5722e0f34e529bec009f"
-  integrity sha512-JIhqnCasI9yD+SsmkquHBxTSEuZdQX5BuQnS2Vc7puQQQ+8yiP5AY5uWhpdv4YL4VM5c6iliiYWPgJ/nJQLp7w==
-  dependencies:
-    mime-db "1.44.0"
-
 mimic-fn@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-2.1.0.tgz#7ed2c2ccccaf84d3ffcb7a69b57711fc2083401b"
@@ -1196,11 +1064,6 @@ mkdirp@^1.0.4:
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-1.0.4.tgz#3eb5ed62622756d79a5f0e2a221dfebad75c2f7e"
   integrity sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==
 
-ms@2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
-  integrity sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=
-
 ms@2.1.2:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
@@ -1211,20 +1074,6 @@ ms@^2.1.1:
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.3.tgz#574c8138ce1d2b5861f0b44579dbadd60c6615b2"
   integrity sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==
 
-multer@^1.4.2:
-  version "1.4.2"
-  resolved "https://registry.yarnpkg.com/multer/-/multer-1.4.2.tgz#2f1f4d12dbaeeba74cb37e623f234bf4d3d2057a"
-  integrity sha512-xY8pX7V+ybyUpbYMxtjM9KAiD9ixtg5/JkeKUTD6xilfDv0vzzOFcCp4Ljb1UU3tSOM3VTZtKo63OmzOrGi3Cg==
-  dependencies:
-    append-field "^1.0.0"
-    busboy "^0.2.11"
-    concat-stream "^1.5.2"
-    mkdirp "^0.5.1"
-    object-assign "^4.1.1"
-    on-finished "^2.3.0"
-    type-is "^1.6.4"
-    xtend "^4.0.0"
-
 mute-stream@0.0.8:
   version "0.0.8"
   resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.8.tgz#1630c42b2251ff81e2a283de96a5497ea92e5e0d"
@@ -1255,18 +1104,11 @@ normalize-path@^3.0.0, normalize-path@~3.0.0:
   resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-3.0.0.tgz#0dcd69ff23a1c9b11fd0978316644a0388216a65"
   integrity sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==
 
-object-assign@^4.0.1, object-assign@^4.1.1:
+object-assign@^4.0.1:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
   integrity sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=
 
-on-finished@^2.3.0, on-finished@~2.3.0:
-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/on-finished/-/on-finished-2.3.0.tgz#20f1336481b083cd75337992a16971aa2d906947"
-  integrity sha1-IPEzZIGwg811M3mSoWlxqi2QaUc=
-  dependencies:
-    ee-first "1.1.1"
-
 once@^1.3.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
@@ -1370,11 +1212,6 @@ prelude-ls@~1.1.2:
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
   integrity sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=
 
-process-nextick-args@~2.0.0:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-2.0.1.tgz#7820d9b16120cc55ca9ae7792680ae7dba6d7fe2"
-  integrity sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==
-
 progress@^2.0.0:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/progress/-/progress-2.0.3.tgz#7e8cf8d8f5b8f239c1bc68beb4eb78567d572ef8"
@@ -1392,11 +1229,6 @@ punycode@^2.1.0:
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
   integrity sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==
 
-qs@6.7.0:
-  version "6.7.0"
-  resolved "https://registry.yarnpkg.com/qs/-/qs-6.7.0.tgz#41dc1a015e3d581f1621776be31afb2876a9b1bc"
-  integrity sha512-VCdBRNFTX1fyE7Nb6FYoURo/SPe62QCaAyzJvUjwRaIsc+NePBEniHlvxFmmX56+HZphIGtV0XeCirBtpDrTyQ==
-
 query-string@^6.13.3:
   version "6.13.7"
   resolved "https://registry.yarnpkg.com/query-string/-/query-string-6.13.7.tgz#af53802ff6ed56f3345f92d40a056f93681026ee"
@@ -1406,16 +1238,6 @@ query-string@^6.13.3:
     split-on-first "^1.0.0"
     strict-uri-encode "^2.0.0"
 
-raw-body@2.4.0:
-  version "2.4.0"
-  resolved "https://registry.yarnpkg.com/raw-body/-/raw-body-2.4.0.tgz#a1ce6fb9c9bc356ca52e89256ab59059e13d0332"
-  integrity sha512-4Oz8DUIwdvoa5qMJelxipzi/iJIi40O5cGV1wNYp5hvZP8ZN0T+jiNkL0QepXs+EsQ9XJ8ipEDoiH70ySUJP3Q==
-  dependencies:
-    bytes "3.1.0"
-    http-errors "1.7.2"
-    iconv-lite "0.4.24"
-    unpipe "1.0.0"
-
 read-pkg-up@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/read-pkg-up/-/read-pkg-up-1.0.1.tgz#9d63c13276c065918d57f002a57f40a1b643fb02"
@@ -1433,29 +1255,6 @@ read-pkg@^1.0.0:
     normalize-package-data "^2.3.2"
     path-type "^1.0.0"
 
-readable-stream@1.1.x:
-  version "1.1.14"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-1.1.14.tgz#7cf4c54ef648e3813084c636dd2079e166c081d9"
-  integrity sha1-fPTFTvZI44EwhMY23SB54WbAgdk=
-  dependencies:
-    core-util-is "~1.0.0"
-    inherits "~2.0.1"
-    isarray "0.0.1"
-    string_decoder "~0.10.x"
-
-readable-stream@^2.2.2:
-  version "2.3.7"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.7.tgz#1eca1cf711aef814c04f62252a36a62f6cb23b57"
-  integrity sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==
-  dependencies:
-    core-util-is "~1.0.0"
-    inherits "~2.0.3"
-    isarray "~1.0.0"
-    process-nextick-args "~2.0.0"
-    safe-buffer "~5.1.1"
-    string_decoder "~1.1.1"
-    util-deprecate "~1.0.1"
-
 readdirp@~3.5.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/readdirp/-/readdirp-3.5.0.tgz#9ba74c019b15d365278d2e91bb8c48d7b4d42c9e"
@@ -1540,11 +1339,6 @@ safe-buffer@^5.0.1:
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.1.tgz#1eaf9fa9bdb1fdd4ec75f58f9cdb4e6b7827eec6"
   integrity sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==
 
-safe-buffer@~5.1.0, safe-buffer@~5.1.1:
-  version "5.1.2"
-  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
-  integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
-
 "safer-buffer@>= 2.1.2 < 3":
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
@@ -1567,11 +1361,6 @@ semver@^7.3.2:
   dependencies:
     lru-cache "^6.0.0"
 
-setprototypeof@1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/setprototypeof/-/setprototypeof-1.1.1.tgz#7e95acb24aa92f5885e0abef5ba131330d4ae683"
-  integrity sha512-JvdAWfbXeIGaZ9cILp38HntZSFSo3mWg6xGcJJsd+d4aRMOqauag1C63dJfDw7OaMYwEbHMOxEZ1lqVRYP2OAw==
-
 shebang-command@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/shebang-command/-/shebang-command-1.2.0.tgz#44aac65b695b03398968c39f363fee5deafdf1ea"
@@ -1647,11 +1436,6 @@ sprintf-js@~1.0.2:
   resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
   integrity sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=
 
-"statuses@>= 1.5.0 < 2":
-  version "1.5.0"
-  resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.5.0.tgz#161c7dac177659fd9811f43771fa99381478628c"
-  integrity sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow=
-
 streamsearch@0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/streamsearch/-/streamsearch-0.1.2.tgz#808b9d0e56fc273d809ba57338e929919a1a9f1a"
@@ -1680,18 +1464,6 @@ string-width@^4.1.0:
     is-fullwidth-code-point "^3.0.0"
     strip-ansi "^6.0.0"
 
-string_decoder@~0.10.x:
-  version "0.10.31"
-  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-0.10.31.tgz#62e203bc41766c6c28c9fc84301dab1c5310fa94"
-  integrity sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=
-
-string_decoder@~1.1.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.1.1.tgz#9cf1611ba62685d7030ae9e4ba34149c3af03fc8"
-  integrity sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==
-  dependencies:
-    safe-buffer "~5.1.0"
-
 strip-ansi@^5.1.0, strip-ansi@^5.2.0:
   version "5.2.0"
   resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-5.2.0.tgz#8c9a536feb6afc962bdfa5b104a5091c1ad9c0ae"
@@ -1790,11 +1562,6 @@ to-regex-range@^5.0.1:
   dependencies:
     is-number "^7.0.0"
 
-toidentifier@1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/toidentifier/-/toidentifier-1.0.0.tgz#7e1be3470f1e77948bc43d94a3c8f4d7752ba553"
-  integrity sha512-yaOH/Pk/VEhBWWTlhI+qXxDFXlejDGcQipMlyxda9nthulaxLZUNcUqFxokp0vcYnvteJln5FNQDRrxj3YcbVw==
-
 tree-kill@^1.2.2:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/tree-kill/-/tree-kill-1.2.2.tgz#4ca09a9092c88b73a7cdc5e8a01b507b0790a0cc"
@@ -1873,19 +1640,6 @@ type-fest@^0.8.1:
   resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.8.1.tgz#09e249ebde851d3b1e48d27c105444667f17b83d"
   integrity sha512-4dbzIzqvjtgiM5rw1k5rEHtBANKmdudhGyBEajN01fEyhaAIhsoKNy6y7+IN93IfpFtwY9iqi7kD+xwKhQsNJA==
 
-type-is@^1.6.4, type-is@~1.6.17:
-  version "1.6.18"
-  resolved "https://registry.yarnpkg.com/type-is/-/type-is-1.6.18.tgz#4e552cd05df09467dcbc4ef739de89f2cf37c131"
-  integrity sha512-TkRKr9sUTxEH8MdfuCSP7VizJyzRNMjj2J2do2Jr3Kym598JVdEksuzPQCnlFPW4ky9Q+iA+ma9BGm06XQBy8g==
-  dependencies:
-    media-typer "0.3.0"
-    mime-types "~2.1.24"
-
-typedarray@^0.0.6:
-  version "0.0.6"
-  resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
-  integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
-
 typescript@^3.8.3:
   version "3.9.7"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.7.tgz#98d600a5ebdc38f40cb277522f12dc800e9e25fa"
@@ -1895,11 +1649,6 @@ uWebSockets.js@uNetworking/uWebSockets.js#v18.5.0:
   version "18.5.0"
   resolved "https://codeload.github.com/uNetworking/uWebSockets.js/tar.gz/9b1605d2db82981cafe69dbe356e10ce412f5805"
 
-unpipe@1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/unpipe/-/unpipe-1.0.0.tgz#b2bf4ee8514aae6165b4817829d21b2ef49904ec"
-  integrity sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw=
-
 uri-js@^4.2.2:
   version "4.4.0"
   resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.4.0.tgz#aa714261de793e8a82347a7bcc9ce74e86f28602"
@@ -1907,11 +1656,6 @@ uri-js@^4.2.2:
   dependencies:
     punycode "^2.1.0"
 
-util-deprecate@~1.0.1:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
-  integrity sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=
-
 uuid@8.3.2:
   version "8.3.2"
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-8.3.2.tgz#80d5b5ced271bb9af6c445f21a1a04c606cefbe2"