diff --git a/package.json b/package.json
index cc4179bb..ca444baa 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,7 @@
   "devDependencies": {
     "@ava/babel": "2.0.0",
     "@babel/cli": "7.14.8",
-    "@babel/core": "7.14.8",
+    "@babel/core": "7.15.0",
     "@babel/plugin-proposal-class-properties": "^7.14.5",
     "@babel/plugin-proposal-numeric-separator": "^7.14.5",
     "@babel/plugin-proposal-object-rest-spread": "^7.14.7",
diff --git a/yarn.lock b/yarn.lock
index 3a923285..c09b03e0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -69,25 +69,30 @@
   dependencies:
     "@babel/highlight" "^7.14.5"
 
-"@babel/compat-data@^7.14.5", "@babel/compat-data@^7.14.7":
+"@babel/compat-data@^7.14.7":
   version "7.14.7"
   resolved "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.14.7.tgz#7b047d7a3a89a67d2258dc61f604f098f1bc7e08"
   integrity sha512-nS6dZaISCXJ3+518CWiBfEr//gHyMO02uDxBkXTKZDN5POruCnOZ1N4YBRZDCabwF8nZMWBpRxIicmXtBs+fvw==
 
-"@babel/core@7.14.8", "@babel/core@^7.14.6":
-  version "7.14.8"
-  resolved "https://registry.npmjs.org/@babel/core/-/core-7.14.8.tgz#20cdf7c84b5d86d83fac8710a8bc605a7ba3f010"
-  integrity sha512-/AtaeEhT6ErpDhInbXmjHcUQXH0L0TEgscfcxk1qbOvLuKCa5aZT0SOOtDKFY96/CLROwbLSKyFor6idgNaU4Q==
+"@babel/compat-data@^7.15.0":
+  version "7.15.0"
+  resolved "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.15.0.tgz#2dbaf8b85334796cafbb0f5793a90a2fc010b176"
+  integrity sha512-0NqAC1IJE0S0+lL1SWFMxMkz1pKCNCjI4tr2Zx4LJSXxCLAdr6KyArnY+sno5m3yH9g737ygOyPABDsnXkpxiA==
+
+"@babel/core@7.15.0", "@babel/core@^7.14.6":
+  version "7.15.0"
+  resolved "https://registry.npmjs.org/@babel/core/-/core-7.15.0.tgz#749e57c68778b73ad8082775561f67f5196aafa8"
+  integrity sha512-tXtmTminrze5HEUPn/a0JtOzzfp0nk+UEXQ/tqIJo3WDGypl/2OFQEMll/zSFU8f/lfmfLXvTaORHF3cfXIQMw==
   dependencies:
     "@babel/code-frame" "^7.14.5"
-    "@babel/generator" "^7.14.8"
-    "@babel/helper-compilation-targets" "^7.14.5"
-    "@babel/helper-module-transforms" "^7.14.8"
+    "@babel/generator" "^7.15.0"
+    "@babel/helper-compilation-targets" "^7.15.0"
+    "@babel/helper-module-transforms" "^7.15.0"
     "@babel/helpers" "^7.14.8"
-    "@babel/parser" "^7.14.8"
+    "@babel/parser" "^7.15.0"
     "@babel/template" "^7.14.5"
-    "@babel/traverse" "^7.14.8"
-    "@babel/types" "^7.14.8"
+    "@babel/traverse" "^7.15.0"
+    "@babel/types" "^7.15.0"
     convert-source-map "^1.7.0"
     debug "^4.1.0"
     gensync "^1.0.0-beta.2"
@@ -95,12 +100,12 @@
     semver "^6.3.0"
     source-map "^0.5.0"
 
-"@babel/generator@^7.0.0", "@babel/generator@^7.14.5", "@babel/generator@^7.14.8":
-  version "7.14.8"
-  resolved "https://registry.npmjs.org/@babel/generator/-/generator-7.14.8.tgz#bf86fd6af96cf3b74395a8ca409515f89423e070"
-  integrity sha512-cYDUpvIzhBVnMzRoY1fkSEhK/HmwEVwlyULYgn/tMQYd6Obag3ylCjONle3gdErfXBW61SVTlR9QR7uWlgeIkg==
+"@babel/generator@^7.0.0", "@babel/generator@^7.14.5", "@babel/generator@^7.15.0":
+  version "7.15.0"
+  resolved "https://registry.npmjs.org/@babel/generator/-/generator-7.15.0.tgz#a7d0c172e0d814974bad5aa77ace543b97917f15"
+  integrity sha512-eKl4XdMrbpYvuB505KTta4AV9g+wWzmVBW69tX0H2NwKVKd2YJbKgyK6M8j/rgLbmHOYJn6rUklV677nOyJrEQ==
   dependencies:
-    "@babel/types" "^7.14.8"
+    "@babel/types" "^7.15.0"
     jsesc "^2.5.1"
     source-map "^0.5.0"
 
@@ -120,12 +125,12 @@
   dependencies:
     "@babel/types" "^7.14.5"
 
-"@babel/helper-compilation-targets@^7.14.5":
-  version "7.14.5"
-  resolved "https://registry.npmjs.org/@babel/helper-compilation-targets/-/helper-compilation-targets-7.14.5.tgz#7a99c5d0967911e972fe2c3411f7d5b498498ecf"
-  integrity sha512-v+QtZqXEiOnpO6EYvlImB6zCD2Lel06RzOPzmkz/D/XgQiUu3C/Jb1LOqSt/AIA34TYi/Q+KlT8vTQrgdxkbLw==
+"@babel/helper-compilation-targets@^7.14.5", "@babel/helper-compilation-targets@^7.15.0":
+  version "7.15.0"
+  resolved "https://registry.npmjs.org/@babel/helper-compilation-targets/-/helper-compilation-targets-7.15.0.tgz#973df8cbd025515f3ff25db0c05efc704fa79818"
+  integrity sha512-h+/9t0ncd4jfZ8wsdAsoIxSa61qhBYlycXiHWqJaQBCXAhDCMbPRSMTGnZIkkmt1u4ag+UQmuqcILwqKzZ4N2A==
   dependencies:
-    "@babel/compat-data" "^7.14.5"
+    "@babel/compat-data" "^7.15.0"
     "@babel/helper-validator-option" "^7.14.5"
     browserslist "^4.16.6"
     semver "^6.3.0"
@@ -205,19 +210,19 @@
   dependencies:
     "@babel/types" "^7.14.5"
 
-"@babel/helper-module-transforms@^7.14.5", "@babel/helper-module-transforms@^7.14.8":
-  version "7.14.8"
-  resolved "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.14.8.tgz#d4279f7e3fd5f4d5d342d833af36d4dd87d7dc49"
-  integrity sha512-RyE+NFOjXn5A9YU1dkpeBaduagTlZ0+fccnIcAGbv1KGUlReBj7utF7oEth8IdIBQPcux0DDgW5MFBH2xu9KcA==
+"@babel/helper-module-transforms@^7.14.5", "@babel/helper-module-transforms@^7.15.0":
+  version "7.15.0"
+  resolved "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.15.0.tgz#679275581ea056373eddbe360e1419ef23783b08"
+  integrity sha512-RkGiW5Rer7fpXv9m1B3iHIFDZdItnO2/BLfWVW/9q7+KqQSDY5kUfQEbzdXM1MVhJGcugKV7kRrNVzNxmk7NBg==
   dependencies:
     "@babel/helper-module-imports" "^7.14.5"
-    "@babel/helper-replace-supers" "^7.14.5"
+    "@babel/helper-replace-supers" "^7.15.0"
     "@babel/helper-simple-access" "^7.14.8"
     "@babel/helper-split-export-declaration" "^7.14.5"
-    "@babel/helper-validator-identifier" "^7.14.8"
+    "@babel/helper-validator-identifier" "^7.14.9"
     "@babel/template" "^7.14.5"
-    "@babel/traverse" "^7.14.8"
-    "@babel/types" "^7.14.8"
+    "@babel/traverse" "^7.15.0"
+    "@babel/types" "^7.15.0"
 
 "@babel/helper-optimise-call-expression@^7.14.5":
   version "7.14.5"
@@ -289,10 +294,10 @@
   resolved "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.14.5.tgz#d0f0e277c512e0c938277faa85a3968c9a44c0e8"
   integrity sha512-5lsetuxCLilmVGyiLEfoHBRX8UCFD+1m2x3Rj97WrW3V7H3u4RWRXA4evMjImCsin2J2YT0QaVDGf+z8ondbAg==
 
-"@babel/helper-validator-identifier@^7.14.8":
-  version "7.14.8"
-  resolved "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.14.8.tgz#32be33a756f29e278a0d644fa08a2c9e0f88a34c"
-  integrity sha512-ZGy6/XQjllhYQrNw/3zfWRwZCTVSiBLZ9DHVZxn9n2gip/7ab8mv2TWlKPIBk26RwedCBoWdjLmn+t9na2Gcow==
+"@babel/helper-validator-identifier@^7.14.9":
+  version "7.14.9"
+  resolved "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.14.9.tgz#6654d171b2024f6d8ee151bf2509699919131d48"
+  integrity sha512-pQYxPY0UP6IHISRitNe8bsijHex4TWZXi2HwKVsjPiltzlhse2znVcm9Ace510VT1kxIHjGJCZZQBX2gJDbo0g==
 
 "@babel/helper-validator-identifier@^7.14.9":
   version "7.14.9"
@@ -331,10 +336,10 @@
     chalk "^2.0.0"
     js-tokens "^4.0.0"
 
-"@babel/parser@^7.0.0", "@babel/parser@^7.14.5", "@babel/parser@^7.14.8":
-  version "7.14.8"
-  resolved "https://registry.npmjs.org/@babel/parser/-/parser-7.14.8.tgz#66fd41666b2d7b840bd5ace7f7416d5ac60208d4"
-  integrity sha512-syoCQFOoo/fzkWDeM0dLEZi5xqurb5vuyzwIMNZRNun+N/9A4cUZeQaE7dTrB8jGaKuJRBtEOajtnmw0I5hvvA==
+"@babel/parser@^7.0.0", "@babel/parser@^7.14.5", "@babel/parser@^7.15.0":
+  version "7.15.2"
+  resolved "https://registry.npmjs.org/@babel/parser/-/parser-7.15.2.tgz#08d4ffcf90d211bf77e7cc7154c6f02d468d2b1d"
+  integrity sha512-bMJXql1Ss8lFnvr11TZDH4ArtwlAS5NG9qBmdiFW2UHHm6MVoR+GDc5XE2b9K938cyjc9O6/+vjjcffLDtfuDg==
 
 "@babel/parser@^7.15.0":
   version "7.15.2"
@@ -538,18 +543,18 @@
     "@babel/parser" "^7.14.5"
     "@babel/types" "^7.14.5"
 
-"@babel/traverse@^7.14.5", "@babel/traverse@^7.14.8":
-  version "7.14.8"
-  resolved "https://registry.npmjs.org/@babel/traverse/-/traverse-7.14.8.tgz#c0253f02677c5de1a8ff9df6b0aacbec7da1a8ce"
-  integrity sha512-kexHhzCljJcFNn1KYAQ6A5wxMRzq9ebYpEDV4+WdNyr3i7O44tanbDOR/xjiG2F3sllan+LgwK+7OMk0EmydHg==
+"@babel/traverse@^7.14.5", "@babel/traverse@^7.14.8", "@babel/traverse@^7.15.0":
+  version "7.15.0"
+  resolved "https://registry.npmjs.org/@babel/traverse/-/traverse-7.15.0.tgz#4cca838fd1b2a03283c1f38e141f639d60b3fc98"
+  integrity sha512-392d8BN0C9eVxVWd8H6x9WfipgVH5IaIoLp23334Sc1vbKKWINnvwRpb4us0xtPaCumlwbTtIYNA0Dv/32sVFw==
   dependencies:
     "@babel/code-frame" "^7.14.5"
-    "@babel/generator" "^7.14.8"
+    "@babel/generator" "^7.15.0"
     "@babel/helper-function-name" "^7.14.5"
     "@babel/helper-hoist-variables" "^7.14.5"
     "@babel/helper-split-export-declaration" "^7.14.5"
-    "@babel/parser" "^7.14.8"
-    "@babel/types" "^7.14.8"
+    "@babel/parser" "^7.15.0"
+    "@babel/types" "^7.15.0"
     debug "^4.1.0"
     globals "^11.1.0"
 
@@ -577,12 +582,12 @@
     lodash "^4.17.13"
     to-fast-properties "^2.0.0"
 
-"@babel/types@^7.12.5", "@babel/types@^7.14.5", "@babel/types@^7.14.8":
-  version "7.14.8"
-  resolved "https://registry.npmjs.org/@babel/types/-/types-7.14.8.tgz#38109de8fcadc06415fbd9b74df0065d4d41c728"
-  integrity sha512-iob4soQa7dZw8nodR/KlOQkPh9S4I8RwCxwRIFuiMRYjOzH/KJzdUfDgz6cGi5dDaclXF4P2PAhCdrBJNIg68Q==
+"@babel/types@^7.12.5", "@babel/types@^7.14.5", "@babel/types@^7.14.8", "@babel/types@^7.15.0":
+  version "7.15.0"
+  resolved "https://registry.npmjs.org/@babel/types/-/types-7.15.0.tgz#61af11f2286c4e9c69ca8deb5f4375a73c72dcbd"
+  integrity sha512-OBvfqnllOIdX4ojTHpwZbpvz4j3EWyjkZEdmjH0/cgsd6QOdSgU8rLSk6ard/pcW7rlmjdVSX/AWOaORR1uNOQ==
   dependencies:
-    "@babel/helper-validator-identifier" "^7.14.8"
+    "@babel/helper-validator-identifier" "^7.14.9"
     to-fast-properties "^2.0.0"
 
 "@babel/types@^7.15.0":