diff --git a/package.json b/package.json
index cc23023..64c9cd8 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
     "@types/html-webpack-plugin": "^3.2.3",
     "@types/webpack": "^4.41.26",
     "@types/webpack-sources": "^1.4.0",
-    "@typescript-eslint/eslint-plugin": "^3.6.0",
+    "@typescript-eslint/eslint-plugin": "^4.0.0",
     "@typescript-eslint/parser": "^3.6.0",
     "eslint": "^7.4.0",
     "eslint-config-airbnb-base": "^14.2.0",
diff --git a/yarn.lock b/yarn.lock
index 64db468..4bcce80 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -162,6 +162,27 @@
     mkdirp "^0.5.1"
     rimraf "^2.5.2"
 
+"@nodelib/fs.scandir@2.1.4":
+  version "2.1.4"
+  resolved "https://registry.yarnpkg.com/@nodelib/fs.scandir/-/fs.scandir-2.1.4.tgz#d4b3549a5db5de2683e0c1071ab4f140904bbf69"
+  integrity sha512-33g3pMJk3bg5nXbL/+CY6I2eJDzZAni49PfJnL5fghPTggPvBd/pFNSgJsdAgWptuFu7qq/ERvOYFlhvsLTCKA==
+  dependencies:
+    "@nodelib/fs.stat" "2.0.4"
+    run-parallel "^1.1.9"
+
+"@nodelib/fs.stat@2.0.4", "@nodelib/fs.stat@^2.0.2":
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/@nodelib/fs.stat/-/fs.stat-2.0.4.tgz#a3f2dd61bab43b8db8fa108a121cfffe4c676655"
+  integrity sha512-IYlHJA0clt2+Vg7bccq+TzRdJvv19c2INqBSsoOLp1je7xjtr7J26+WXR72MCdvU9q1qTzIWDfhMf+DRvQJK4Q==
+
+"@nodelib/fs.walk@^1.2.3":
+  version "1.2.6"
+  resolved "https://registry.yarnpkg.com/@nodelib/fs.walk/-/fs.walk-1.2.6.tgz#cce9396b30aa5afe9e3756608f5831adcb53d063"
+  integrity sha512-8Broas6vTtW4GIXTAHDoE32hnN2M5ykgCpWGbuXHQ15vEMqr23pB76e/GZcYsZCHALv50ktd24qhEyKr6wBtow==
+  dependencies:
+    "@nodelib/fs.scandir" "2.1.4"
+    fastq "^1.6.0"
+
 "@types/anymatch@*":
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/@types/anymatch/-/anymatch-1.3.1.tgz#336badc1beecb9dacc38bea2cf32adf627a8421a"
@@ -287,12 +308,13 @@
     "@types/webpack-sources" "*"
     source-map "^0.6.0"
 
-"@typescript-eslint/eslint-plugin@^3.6.0":
-  version "3.6.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-3.6.0.tgz#ba2b6cae478b8fca3f2e58ff1313e4198eea2d8a"
-  integrity sha512-ubHlHVt1lsPQB/CZdEov9XuOFhNG9YRC//kuiS1cMQI6Bs1SsqKrEmZnpgRwthGR09/kEDtr9MywlqXyyYd8GA==
+"@typescript-eslint/eslint-plugin@^4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.0.0.tgz#99349a501447fed91de18346705c0c65cf603bee"
+  integrity sha512-5e6q1TR7gS2P+8W2xndCu7gBh3BzmYEo70OyIdsmCmknHha/yNbz2vdevl+tP1uoaMOcrzg4gyrAijuV3DDBHA==
   dependencies:
-    "@typescript-eslint/experimental-utils" "3.6.0"
+    "@typescript-eslint/experimental-utils" "4.0.0"
+    "@typescript-eslint/scope-manager" "4.0.0"
     debug "^4.1.1"
     functional-red-black-tree "^1.0.1"
     regexpp "^3.0.0"
@@ -310,6 +332,18 @@
     eslint-scope "^5.0.0"
     eslint-utils "^2.0.0"
 
+"@typescript-eslint/experimental-utils@4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/experimental-utils/-/experimental-utils-4.0.0.tgz#fbec21a3b5ab59127edb6ce2e139ed378cc50eb5"
+  integrity sha512-hbX6zR+a/vcpFVNJYN/Nbd7gmaMosDTxHEKcvmhWeWcq/0UDifrqmCfkkodbAKL46Fn4ekSBMTyq2zlNDzcQxw==
+  dependencies:
+    "@types/json-schema" "^7.0.3"
+    "@typescript-eslint/scope-manager" "4.0.0"
+    "@typescript-eslint/types" "4.0.0"
+    "@typescript-eslint/typescript-estree" "4.0.0"
+    eslint-scope "^5.0.0"
+    eslint-utils "^2.0.0"
+
 "@typescript-eslint/parser@^3.6.0":
   version "3.6.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-3.6.0.tgz#79b5232e1a2d06f1fc745942b690cd87aca7b60e"
@@ -321,11 +355,24 @@
     "@typescript-eslint/typescript-estree" "3.6.0"
     eslint-visitor-keys "^1.1.0"
 
+"@typescript-eslint/scope-manager@4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-4.0.0.tgz#8c9e3b3b8cdf5a1fbe671d9fad73ff67bc027ea8"
+  integrity sha512-9gcWUPoWo7gk/+ZQPg7L1ySRmR5HLIy3Vu6/LfhQbuzIkGm6v2CGIjpVRISoDLFRovNRDImd4aP/sa8O4yIEBg==
+  dependencies:
+    "@typescript-eslint/types" "4.0.0"
+    "@typescript-eslint/visitor-keys" "4.0.0"
+
 "@typescript-eslint/types@3.6.0":
   version "3.6.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-3.6.0.tgz#4bd6eee55d2f9d35a4b36c4804be1880bf68f7bc"
   integrity sha512-JwVj74ohUSt0ZPG+LZ7hb95fW8DFOqBuR6gE7qzq55KDI3BepqsCtHfBIoa0+Xi1AI7fq5nCu2VQL8z4eYftqg==
 
+"@typescript-eslint/types@4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-4.0.0.tgz#ec1f9fc06b8558a1d5afa6e337182d08beece7f5"
+  integrity sha512-bK+c2VLzznX2fUWLK6pFDv3cXGTp7nHIuBMq1B9klA+QCsqLHOOqe5TQReAQDl7DN2RfH+neweo0oC5hYlG7Rg==
+
 "@typescript-eslint/typescript-estree@3.6.0":
   version "3.6.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-3.6.0.tgz#9b4cab43f1192b64ff51530815b8919f166ce177"
@@ -340,6 +387,20 @@
     semver "^7.3.2"
     tsutils "^3.17.1"
 
+"@typescript-eslint/typescript-estree@4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-4.0.0.tgz#2244c63de2f2190bc5718eb0fb3fd2c437d42097"
+  integrity sha512-ewFMPi2pMLDNIXGMPdf8r7El2oPSZw9PEYB0j+WcpKd7AX2ARmajGa7RUHTukllWX2bj4vWX6JLE1Oih2BMokA==
+  dependencies:
+    "@typescript-eslint/types" "4.0.0"
+    "@typescript-eslint/visitor-keys" "4.0.0"
+    debug "^4.1.1"
+    globby "^11.0.1"
+    is-glob "^4.0.1"
+    lodash "^4.17.15"
+    semver "^7.3.2"
+    tsutils "^3.17.1"
+
 "@typescript-eslint/visitor-keys@3.6.0":
   version "3.6.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-3.6.0.tgz#44185eb0cc47651034faa95c5e2e8b314ecebb26"
@@ -347,6 +408,14 @@
   dependencies:
     eslint-visitor-keys "^1.1.0"
 
+"@typescript-eslint/visitor-keys@4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-4.0.0.tgz#e2bbb69d98076d6a3f06abcb2048225a74362c33"
+  integrity sha512-sTouJbv6rjVJeTE4lpSBVYXq/u5K3gbB6LKt7ccFEZPTZB/VeQ0ssUz9q5Hx++sCqBbdF8PzrrgvEnicXAR6NQ==
+  dependencies:
+    "@typescript-eslint/types" "4.0.0"
+    eslint-visitor-keys "^2.0.0"
+
 JSONStream@^1.0.4:
   version "1.3.5"
   resolved "https://registry.yarnpkg.com/JSONStream/-/JSONStream-1.3.5.tgz#3208c1f08d3a4d99261ab64f92302bc15e111ca0"
@@ -446,6 +515,11 @@ array-includes@^3.1.1:
     es-abstract "^1.17.0"
     is-string "^1.0.5"
 
+array-union@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/array-union/-/array-union-2.1.0.tgz#b798420adbeb1de828d84acd8a2e23d3efe85e8d"
+  integrity sha512-HGyxoOTYUyCM6stUe6EJgnd4EoewAI7zMdfqO+kGjnlZmBDz/cR5pf8r/cR4Wq60sL/p0IkcjUEEPwS3GFrIyw==
+
 array.prototype.flat@^1.2.3:
   version "1.2.3"
   resolved "https://registry.yarnpkg.com/array.prototype.flat/-/array.prototype.flat-1.2.3.tgz#0de82b426b0318dbfdb940089e38b043d37f6c7b"
@@ -804,6 +878,13 @@ define-properties@^1.1.2, define-properties@^1.1.3:
   dependencies:
     object-keys "^1.0.12"
 
+dir-glob@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/dir-glob/-/dir-glob-3.0.1.tgz#56dbf73d992a4a93ba1584f4534063fd2e41717f"
+  integrity sha512-WkrWp9GR4KXfKGYzOLmTuGVi1UWFfws377n9cc55/tb6DuqyF6pcQ5AbiHEshaDpY9v6oaSr2XCDidGmMwdzIA==
+  dependencies:
+    path-type "^4.0.0"
+
 doctrine@1.5.0:
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/doctrine/-/doctrine-1.5.0.tgz#379dce730f6166f76cefa4e6707a159b02c5a6fa"
@@ -952,6 +1033,11 @@ eslint-visitor-keys@^1.1.0, eslint-visitor-keys@^1.2.0:
   resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-1.3.0.tgz#30ebd1ef7c2fdff01c3a4f151044af25fab0523e"
   integrity sha512-6J72N8UNa462wa/KFODt/PJ3IU60SDpC3QXC1Hjc1BXXpfL2C9R5+AU7jhe0F6GREqVMh4Juu+NY7xn+6dipUQ==
 
+eslint-visitor-keys@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-2.0.0.tgz#21fdc8fbcd9c795cc0321f0563702095751511a8"
+  integrity sha512-QudtT6av5WXels9WjIM7qz1XD1cWGvX4gGXvp/zBn9nXG02D0utdU3Em2m/QjTnrsk6bBjmCygl3rmj118msQQ==
+
 eslint@^7.4.0:
   version "7.4.0"
   resolved "https://registry.yarnpkg.com/eslint/-/eslint-7.4.0.tgz#4e35a2697e6c1972f9d6ef2b690ad319f80f206f"
@@ -1077,6 +1163,18 @@ fast-deep-equal@^3.1.1:
   resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz#3a7d56b559d6cbc3eb512325244e619a65c6c525"
   integrity sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==
 
+fast-glob@^3.1.1:
+  version "3.2.5"
+  resolved "https://registry.yarnpkg.com/fast-glob/-/fast-glob-3.2.5.tgz#7939af2a656de79a4f1901903ee8adcaa7cb9661"
+  integrity sha512-2DtFcgT68wiTTiwZ2hNdJfcHNke9XOfnwmBRWXhmeKM8rF0TGwmC/Qto3S7RoZKp5cilZbxzO5iTNTQsJ+EeDg==
+  dependencies:
+    "@nodelib/fs.stat" "^2.0.2"
+    "@nodelib/fs.walk" "^1.2.3"
+    glob-parent "^5.1.0"
+    merge2 "^1.3.0"
+    micromatch "^4.0.2"
+    picomatch "^2.2.1"
+
 fast-json-stable-stringify@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz#874bf69c6f404c2b5d99c481341399fd55892633"
@@ -1087,6 +1185,13 @@ fast-levenshtein@^2.0.6:
   resolved "https://registry.yarnpkg.com/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz#3d8a5c66883a16a30ca8643e851f19baa7797917"
   integrity sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc=
 
+fastq@^1.6.0:
+  version "1.10.0"
+  resolved "https://registry.yarnpkg.com/fastq/-/fastq-1.10.0.tgz#74dbefccade964932cdf500473ef302719c652bb"
+  integrity sha512-NL2Qc5L3iQEsyYzweq7qfgy5OtXCmGzGvhElGEd/SoFWEMOEczNh5s5ocaF01HDetxz+p8ecjNPA6cZxxIHmzA==
+  dependencies:
+    reusify "^1.0.4"
+
 figures@^3.2.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/figures/-/figures-3.2.0.tgz#625c18bd293c604dc4a8ddb2febf0c88341746af"
@@ -1192,7 +1297,7 @@ git-raw-commits@^2.0.0:
     split2 "^2.0.0"
     through2 "^3.0.0"
 
-glob-parent@^5.0.0:
+glob-parent@^5.0.0, glob-parent@^5.1.0:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/glob-parent/-/glob-parent-5.1.1.tgz#b6c1ef417c4e5663ea498f1c45afac6916bbc229"
   integrity sha512-FnI+VGOpnlGHWZxthPGR+QhR78fuiK0sNLkHQv+bL9fQi57lNNdquIbna/WrfROrolq8GK5Ek6BiMwqL/voRYQ==
@@ -1225,6 +1330,18 @@ globals@^12.1.0:
   dependencies:
     type-fest "^0.8.1"
 
+globby@^11.0.1:
+  version "11.0.2"
+  resolved "https://registry.yarnpkg.com/globby/-/globby-11.0.2.tgz#1af538b766a3b540ebfb58a32b2e2d5897321d83"
+  integrity sha512-2ZThXDvvV8fYFRVIxnrMQBipZQDr7MxKAmQK1vujaj9/7eF0efG7BPUKJ7jP7G5SLF37xKDXvO4S/KKLj/Z0og==
+  dependencies:
+    array-union "^2.1.0"
+    dir-glob "^3.0.1"
+    fast-glob "^3.1.1"
+    ignore "^5.1.4"
+    merge2 "^1.3.0"
+    slash "^3.0.0"
+
 graceful-fs@^4.1.2, graceful-fs@^4.1.3:
   version "4.2.4"
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.4.tgz#2256bde14d3632958c465ebc96dc467ca07a29fb"
@@ -1289,6 +1406,11 @@ ignore@^4.0.6:
   resolved "https://registry.yarnpkg.com/ignore/-/ignore-4.0.6.tgz#750e3db5862087b4737ebac8207ffd1ef27b25fc"
   integrity sha512-cyFDKrqc/YdcWFniJhzI42+AzS+gNwmUzOSFcRCQYwySuBBBy/KjuxWLZ/FHEH6Moq1NizMOBWyTcv8O4OZIMg==
 
+ignore@^5.1.4:
+  version "5.1.8"
+  resolved "https://registry.yarnpkg.com/ignore/-/ignore-5.1.8.tgz#f150a8b50a34289b33e22f5889abd4d8016f0e57"
+  integrity sha512-BMpfD7PpiETpBl/A6S498BaIJ6Y/ABT93ETbby2fP00v4EbvPBXWEoaR1UBPKs3iR53pJY7EtZk5KACI57i1Uw==
+
 import-fresh@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/import-fresh/-/import-fresh-2.0.0.tgz#d81355c15612d386c61f9ddd3922d4304822a546"
@@ -1695,6 +1817,11 @@ merge-stream@^2.0.0:
   resolved "https://registry.yarnpkg.com/merge-stream/-/merge-stream-2.0.0.tgz#52823629a14dd00c9770fb6ad47dc6310f2c1f60"
   integrity sha512-abv/qOcuPfk3URPfDzmZU1LKmuw8kT+0nIHvKrKgFrwifol/doWcdA4ZqsWQ8ENrFKkd67Mfpo/LovbIUsbt3w==
 
+merge2@^1.3.0:
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/merge2/-/merge2-1.4.1.tgz#4368892f885e907455a6fd7dc55c0c9d404990ae"
+  integrity sha512-8q7VEgMJW4J8tcfVPy8g09NcQwZdbwFEqhe/WZkoIzjn/3TGDwtOCYtXGxA3O8tPzpczCCDgv+P2P5y00ZJOOg==
+
 micromatch@^4.0.2:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/micromatch/-/micromatch-4.0.2.tgz#4fcb0999bf9fbc2fcbdd212f6d629b9a56c39259"
@@ -2006,7 +2133,7 @@ path-type@^4.0.0:
   resolved "https://registry.yarnpkg.com/path-type/-/path-type-4.0.0.tgz#84ed01c0a7ba380afe09d90a8c180dcd9d03043b"
   integrity sha512-gDKb8aZMDeD/tZWs9P6+q0J9Mwkdl6xMV8TjnGP3qJVJ06bdMgkbBlLU8IdfOsIsFz2BW1rNVT3XuNEl8zPAvw==
 
-picomatch@^2.0.5:
+picomatch@^2.0.5, picomatch@^2.2.1:
   version "2.2.2"
   resolved "https://registry.yarnpkg.com/picomatch/-/picomatch-2.2.2.tgz#21f333e9b6b8eaff02468f5146ea406d345f4dad"
   integrity sha512-q0M/9eZHzmr0AulXyPwNfZjtwZ/RBZlbN3K3CErVrk50T2ASYI7Bye0EvekFY3IP1Nt2DHu0re+V2ZHIpMkuWg==
@@ -2233,6 +2360,11 @@ restore-cursor@^3.1.0:
     onetime "^5.1.0"
     signal-exit "^3.0.2"
 
+reusify@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/reusify/-/reusify-1.0.4.tgz#90da382b1e126efc02146e90845a88db12925d76"
+  integrity sha512-U9nH88a3fc/ekCF1l0/UP1IosiuIjyTh7hBvXVMHYgVcfGvt897Xguj2UOLDeI5BG2m7/uwyaLVT6fbtCwTyzw==
+
 rimraf@2.6.3:
   version "2.6.3"
   resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.3.tgz#b2d104fe0d8fb27cf9e0a1cda8262dd3833c6cab"
@@ -2252,6 +2384,11 @@ run-node@^1.0.0:
   resolved "https://registry.yarnpkg.com/run-node/-/run-node-1.0.0.tgz#46b50b946a2aa2d4947ae1d886e9856fd9cabe5e"
   integrity sha512-kc120TBlQ3mih1LSzdAJXo4xn/GWS2ec0l3S+syHDXP9uRr0JAT8Qd3mdMuyjqCzeZktgP3try92cEgf9Nks8A==
 
+run-parallel@^1.1.9:
+  version "1.1.10"
+  resolved "https://registry.yarnpkg.com/run-parallel/-/run-parallel-1.1.10.tgz#60a51b2ae836636c81377df16cb107351bcd13ef"
+  integrity sha512-zb/1OuZ6flOlH6tQyMPUrE3x3Ulxjlo9WIVXR4yVYi4H9UXQaeIsPbLn2R3O3vQCnDKkAl2qHiuocKKX4Tz/Sw==
+
 rxjs@^6.6.3:
   version "6.6.3"
   resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.6.3.tgz#8ca84635c4daa900c0d3967a6ee7ac60271ee552"