diff --git a/package.json b/package.json
index 4776a8f7..f8431745 100644
--- a/package.json
+++ b/package.json
@@ -61,7 +61,7 @@
   "devDependencies": {
     "@ava/babel": "1.0.1",
     "@babel/cli": "7.12.1",
-    "@babel/core": "7.11.6",
+    "@babel/core": "7.12.3",
     "@babel/plugin-proposal-class-properties": "^7.12.1",
     "@babel/plugin-proposal-numeric-separator": "^7.12.1",
     "@babel/plugin-proposal-object-rest-spread": "^7.12.1",
diff --git a/yarn.lock b/yarn.lock
index 5e500587..87335205 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -63,19 +63,19 @@
   dependencies:
     "@babel/highlight" "^7.10.4"
 
-"@babel/core@7.11.6", "@babel/core@^7.8.4":
-  version "7.11.6"
-  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.11.6.tgz#3a9455dc7387ff1bac45770650bc13ba04a15651"
-  integrity sha512-Wpcv03AGnmkgm6uS6k8iwhIwTrcP0m17TL1n1sy7qD0qelDu4XNeW0dN0mHfa+Gei211yDaLoEe/VlbXQzM4Bg==
+"@babel/core@7.12.3", "@babel/core@^7.8.4":
+  version "7.12.3"
+  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.12.3.tgz#1b436884e1e3bff6fb1328dc02b208759de92ad8"
+  integrity sha512-0qXcZYKZp3/6N2jKYVxZv0aNCsxTSVCiK72DTiTYZAu7sjg73W0/aynWjMbiGd87EQL4WyA8reiJVh92AVla9g==
   dependencies:
     "@babel/code-frame" "^7.10.4"
-    "@babel/generator" "^7.11.6"
-    "@babel/helper-module-transforms" "^7.11.0"
-    "@babel/helpers" "^7.10.4"
-    "@babel/parser" "^7.11.5"
+    "@babel/generator" "^7.12.1"
+    "@babel/helper-module-transforms" "^7.12.1"
+    "@babel/helpers" "^7.12.1"
+    "@babel/parser" "^7.12.3"
     "@babel/template" "^7.10.4"
-    "@babel/traverse" "^7.11.5"
-    "@babel/types" "^7.11.5"
+    "@babel/traverse" "^7.12.1"
+    "@babel/types" "^7.12.1"
     convert-source-map "^1.7.0"
     debug "^4.1.0"
     gensync "^1.0.0-beta.1"
@@ -85,16 +85,7 @@
     semver "^5.4.1"
     source-map "^0.5.0"
 
-"@babel/generator@^7.0.0", "@babel/generator@^7.11.5", "@babel/generator@^7.11.6", "@babel/generator@^7.8.4":
-  version "7.11.6"
-  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.11.6.tgz#b868900f81b163b4d464ea24545c61cbac4dc620"
-  integrity sha512-DWtQ1PV3r+cLbySoHrwn9RWEgKMBLLma4OBQloPRyDYvc5msJM9kvTLo1YnlJd1P/ZuKbdli3ijr5q3FvAF3uA==
-  dependencies:
-    "@babel/types" "^7.11.5"
-    jsesc "^2.5.1"
-    source-map "^0.5.0"
-
-"@babel/generator@^7.12.1":
+"@babel/generator@^7.0.0", "@babel/generator@^7.12.1", "@babel/generator@^7.8.4":
   version "7.12.1"
   resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.12.1.tgz#0d70be32bdaa03d7c51c8597dda76e0df1f15468"
   integrity sha512-DB+6rafIdc9o72Yc3/Ph5h+6hUjeOp66pF0naQBgUFFuPqzQwIlPTm3xZR7YNvduIMtkDIj2t21LSQwnbCrXvg==
@@ -154,13 +145,6 @@
   dependencies:
     "@babel/types" "^7.10.4"
 
-"@babel/helper-member-expression-to-functions@^7.10.4":
-  version "7.10.4"
-  resolved "https://registry.yarnpkg.com/@babel/helper-member-expression-to-functions/-/helper-member-expression-to-functions-7.10.4.tgz#7cd04b57dfcf82fce9aeae7d4e4452fa31b8c7c4"
-  integrity sha512-m5j85pK/KZhuSdM/8cHUABQTAslV47OjfIB9Cc7P+PvlAoBzdb79BGNfw8RhT5Mq3p+xGd0ZfAKixbrUZx0C7A==
-  dependencies:
-    "@babel/types" "^7.10.4"
-
 "@babel/helper-member-expression-to-functions@^7.12.1":
   version "7.12.1"
   resolved "https://registry.yarnpkg.com/@babel/helper-member-expression-to-functions/-/helper-member-expression-to-functions-7.12.1.tgz#fba0f2fcff3fba00e6ecb664bb5e6e26e2d6165c"
@@ -175,17 +159,26 @@
   dependencies:
     "@babel/types" "^7.10.4"
 
-"@babel/helper-module-transforms@^7.11.0", "@babel/helper-module-transforms@^7.8.3":
-  version "7.11.0"
-  resolved "https://registry.yarnpkg.com/@babel/helper-module-transforms/-/helper-module-transforms-7.11.0.tgz#b16f250229e47211abdd84b34b64737c2ab2d359"
-  integrity sha512-02EVu8COMuTRO1TAzdMtpBPbe6aQ1w/8fePD2YgQmxZU4gpNWaL9gK3Jp7dxlkUlUCJOTaSeA+Hrm1BRQwqIhg==
+"@babel/helper-module-imports@^7.12.1":
+  version "7.12.1"
+  resolved "https://registry.yarnpkg.com/@babel/helper-module-imports/-/helper-module-imports-7.12.1.tgz#1644c01591a15a2f084dd6d092d9430eb1d1216c"
+  integrity sha512-ZeC1TlMSvikvJNy1v/wPIazCu3NdOwgYZLIkmIyAsGhqkNpiDoQQRmaCK8YP4Pq3GPTLPV9WXaPCJKvx06JxKA==
   dependencies:
-    "@babel/helper-module-imports" "^7.10.4"
-    "@babel/helper-replace-supers" "^7.10.4"
-    "@babel/helper-simple-access" "^7.10.4"
+    "@babel/types" "^7.12.1"
+
+"@babel/helper-module-transforms@^7.12.1", "@babel/helper-module-transforms@^7.8.3":
+  version "7.12.1"
+  resolved "https://registry.yarnpkg.com/@babel/helper-module-transforms/-/helper-module-transforms-7.12.1.tgz#7954fec71f5b32c48e4b303b437c34453fd7247c"
+  integrity sha512-QQzehgFAZ2bbISiCpmVGfiGux8YVFXQ0abBic2Envhej22DVXV9nCFaS5hIQbkyo1AdGb+gNME2TSh3hYJVV/w==
+  dependencies:
+    "@babel/helper-module-imports" "^7.12.1"
+    "@babel/helper-replace-supers" "^7.12.1"
+    "@babel/helper-simple-access" "^7.12.1"
     "@babel/helper-split-export-declaration" "^7.11.0"
+    "@babel/helper-validator-identifier" "^7.10.4"
     "@babel/template" "^7.10.4"
-    "@babel/types" "^7.11.0"
+    "@babel/traverse" "^7.12.1"
+    "@babel/types" "^7.12.1"
     lodash "^4.17.19"
 
 "@babel/helper-optimise-call-expression@^7.10.4":
@@ -200,16 +193,6 @@
   resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.10.4.tgz#2f75a831269d4f677de49986dff59927533cf375"
   integrity sha512-O4KCvQA6lLiMU9l2eawBPMf1xPP8xPfB3iEQw150hOVTqj/rfXz0ThTb4HEzqQfs2Bmo5Ay8BzxfzVtBrr9dVg==
 
-"@babel/helper-replace-supers@^7.10.4":
-  version "7.10.4"
-  resolved "https://registry.yarnpkg.com/@babel/helper-replace-supers/-/helper-replace-supers-7.10.4.tgz#d585cd9388ea06e6031e4cd44b6713cbead9e6cf"
-  integrity sha512-sPxZfFXocEymYTdVK1UNmFPBN+Hv5mJkLPsYWwGBxZAxaWfFu+xqp7b6qWD0yjNuNL2VKc6L5M18tOXUP7NU0A==
-  dependencies:
-    "@babel/helper-member-expression-to-functions" "^7.10.4"
-    "@babel/helper-optimise-call-expression" "^7.10.4"
-    "@babel/traverse" "^7.10.4"
-    "@babel/types" "^7.10.4"
-
 "@babel/helper-replace-supers@^7.12.1":
   version "7.12.1"
   resolved "https://registry.yarnpkg.com/@babel/helper-replace-supers/-/helper-replace-supers-7.12.1.tgz#f15c9cc897439281891e11d5ce12562ac0cf3fa9"
@@ -220,13 +203,12 @@
     "@babel/traverse" "^7.12.1"
     "@babel/types" "^7.12.1"
 
-"@babel/helper-simple-access@^7.10.4":
-  version "7.10.4"
-  resolved "https://registry.yarnpkg.com/@babel/helper-simple-access/-/helper-simple-access-7.10.4.tgz#0f5ccda2945277a2a7a2d3a821e15395edcf3461"
-  integrity sha512-0fMy72ej/VEvF8ULmX6yb5MtHG4uH4Dbd6I/aHDb/JVg0bbivwt9Wg+h3uMvX+QSFtwr5MeItvazbrc4jtRAXw==
+"@babel/helper-simple-access@^7.12.1":
+  version "7.12.1"
+  resolved "https://registry.yarnpkg.com/@babel/helper-simple-access/-/helper-simple-access-7.12.1.tgz#32427e5aa61547d38eb1e6eaf5fd1426fdad9136"
+  integrity sha512-OxBp7pMrjVewSSC8fXDFrHrBcJATOOFssZwv16F3/6Xtc138GHybBfPbm9kfiqQHKhYQrlamWILwlDCeyMFEaA==
   dependencies:
-    "@babel/template" "^7.10.4"
-    "@babel/types" "^7.10.4"
+    "@babel/types" "^7.12.1"
 
 "@babel/helper-simple-access@^7.8.3":
   version "7.8.3"
@@ -262,14 +244,14 @@
   resolved "https://registry.yarnpkg.com/@babel/helper-validator-identifier/-/helper-validator-identifier-7.10.4.tgz#a78c7a7251e01f616512d31b10adcf52ada5e0d2"
   integrity sha512-3U9y+43hz7ZM+rzG24Qe2mufW5KhvFg/NhnNph+i9mgCtdTCtMJuI1TMkrIUiK7Ix4PYlRF9I5dhqaLYA/ADXw==
 
-"@babel/helpers@^7.10.4":
-  version "7.10.4"
-  resolved "https://registry.yarnpkg.com/@babel/helpers/-/helpers-7.10.4.tgz#2abeb0d721aff7c0a97376b9e1f6f65d7a475044"
-  integrity sha512-L2gX/XeUONeEbI78dXSrJzGdz4GQ+ZTA/aazfUsFaWjSe95kiCuOZ5HsXvkiw3iwF+mFHSRUfJU8t6YavocdXA==
+"@babel/helpers@^7.12.1":
+  version "7.12.1"
+  resolved "https://registry.yarnpkg.com/@babel/helpers/-/helpers-7.12.1.tgz#8a8261c1d438ec18cb890434df4ec768734c1e79"
+  integrity sha512-9JoDSBGoWtmbay98efmT2+mySkwjzeFeAL9BuWNoVQpkPFQF8SIIFUfY5os9u8wVzglzoiPRSW7cuJmBDUt43g==
   dependencies:
     "@babel/template" "^7.10.4"
-    "@babel/traverse" "^7.10.4"
-    "@babel/types" "^7.10.4"
+    "@babel/traverse" "^7.12.1"
+    "@babel/types" "^7.12.1"
 
 "@babel/highlight@^7.10.4":
   version "7.10.4"
@@ -280,12 +262,7 @@
     chalk "^2.0.0"
     js-tokens "^4.0.0"
 
-"@babel/parser@^7.0.0", "@babel/parser@^7.10.4", "@babel/parser@^7.11.5":
-  version "7.11.5"
-  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.11.5.tgz#c7ff6303df71080ec7a4f5b8c003c58f1cf51037"
-  integrity sha512-X9rD8qqm695vgmeaQ4fvz/o3+Wk4ZzQvSHkDBgpYKxpD4qTAUm88ZKtHkVqIOsYFFbIQ6wQYhC6q7pjqVK0E0Q==
-
-"@babel/parser@^7.12.1":
+"@babel/parser@^7.0.0", "@babel/parser@^7.10.4", "@babel/parser@^7.12.1", "@babel/parser@^7.12.3":
   version "7.12.3"
   resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.12.3.tgz#a305415ebe7a6c7023b40b5122a0662d928334cd"
   integrity sha512-kFsOS0IbsuhO5ojF8Hc8z/8vEIOkylVBrjiZUbLTE3XFe0Qi+uu6HjzQixkFaqr0ZPAMZcBVxEwmsnsLPZ2Xsw==
@@ -502,21 +479,6 @@
     "@babel/parser" "^7.10.4"
     "@babel/types" "^7.10.4"
 
-"@babel/traverse@^7.10.4", "@babel/traverse@^7.11.5":
-  version "7.11.5"
-  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.11.5.tgz#be777b93b518eb6d76ee2e1ea1d143daa11e61c3"
-  integrity sha512-EjiPXt+r7LiCZXEfRpSJd+jUMnBd4/9OUv7Nx3+0u9+eimMwJmG0Q98lw4/289JCoxSE8OolDMNZaaF/JZ69WQ==
-  dependencies:
-    "@babel/code-frame" "^7.10.4"
-    "@babel/generator" "^7.11.5"
-    "@babel/helper-function-name" "^7.10.4"
-    "@babel/helper-split-export-declaration" "^7.11.0"
-    "@babel/parser" "^7.11.5"
-    "@babel/types" "^7.11.5"
-    debug "^4.1.0"
-    globals "^11.1.0"
-    lodash "^4.17.19"
-
 "@babel/traverse@^7.12.1":
   version "7.12.1"
   resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.12.1.tgz#941395e0c5cc86d5d3e75caa095d3924526f0c1e"
@@ -541,7 +503,7 @@
     lodash "^4.17.13"
     to-fast-properties "^2.0.0"
 
-"@babel/types@^7.10.4", "@babel/types@^7.11.0", "@babel/types@^7.11.5", "@babel/types@^7.12.1", "@babel/types@^7.8.3":
+"@babel/types@^7.10.4", "@babel/types@^7.11.0", "@babel/types@^7.12.1", "@babel/types@^7.8.3":
   version "7.12.1"
   resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.12.1.tgz#e109d9ab99a8de735be287ee3d6a9947a190c4ae"
   integrity sha512-BzSY3NJBKM4kyatSOWh3D/JJ2O3CVzBybHWxtgxnggaxEuaSTTDqeiSb/xk9lrkw2Tbqyivw5ZU4rT+EfznQsA==