diff --git a/package.json b/package.json
index 9b647a4..bec0488 100644
--- a/package.json
+++ b/package.json
@@ -71,8 +71,8 @@
     "@aureooms/js-array": "4.0.0",
     "@aureooms/js-compare": "2.0.1",
     "@aureooms/js-functools": "2.0.3",
-    "@babel/core": "7.14.6",
-    "@babel/preset-env": "7.14.7",
+    "@babel/core": "7.14.8",
+    "@babel/preset-env": "7.14.8",
     "@babel/register": "7.14.5",
     "@commitlint/cli": "12.1.4",
     "@js-library/commitlint-config": "0.0.4",
diff --git a/yarn.lock b/yarn.lock
index fabfe72..c4cd8d2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -73,20 +73,20 @@
   resolved "https://registry.yarnpkg.com/@babel/compat-data/-/compat-data-7.14.7.tgz#7b047d7a3a89a67d2258dc61f604f098f1bc7e08"
   integrity sha512-nS6dZaISCXJ3+518CWiBfEr//gHyMO02uDxBkXTKZDN5POruCnOZ1N4YBRZDCabwF8nZMWBpRxIicmXtBs+fvw==
 
-"@babel/core@7.14.6":
-  version "7.14.6"
-  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.14.6.tgz#e0814ec1a950032ff16c13a2721de39a8416fcab"
-  integrity sha512-gJnOEWSqTk96qG5BoIrl5bVtc23DCycmIePPYnamY9RboYdI4nFy5vAQMSl81O5K/W0sLDWfGysnOECC+KUUCA==
+"@babel/core@7.14.8":
+  version "7.14.8"
+  resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.14.8.tgz#20cdf7c84b5d86d83fac8710a8bc605a7ba3f010"
+  integrity sha512-/AtaeEhT6ErpDhInbXmjHcUQXH0L0TEgscfcxk1qbOvLuKCa5aZT0SOOtDKFY96/CLROwbLSKyFor6idgNaU4Q==
   dependencies:
     "@babel/code-frame" "^7.14.5"
-    "@babel/generator" "^7.14.5"
+    "@babel/generator" "^7.14.8"
     "@babel/helper-compilation-targets" "^7.14.5"
-    "@babel/helper-module-transforms" "^7.14.5"
-    "@babel/helpers" "^7.14.6"
-    "@babel/parser" "^7.14.6"
+    "@babel/helper-module-transforms" "^7.14.8"
+    "@babel/helpers" "^7.14.8"
+    "@babel/parser" "^7.14.8"
     "@babel/template" "^7.14.5"
-    "@babel/traverse" "^7.14.5"
-    "@babel/types" "^7.14.5"
+    "@babel/traverse" "^7.14.8"
+    "@babel/types" "^7.14.8"
     convert-source-map "^1.7.0"
     debug "^4.1.0"
     gensync "^1.0.0-beta.2"
@@ -142,6 +142,15 @@
     jsesc "^2.5.1"
     source-map "^0.5.0"
 
+"@babel/generator@^7.14.8":
+  version "7.14.8"
+  resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.14.8.tgz#bf86fd6af96cf3b74395a8ca409515f89423e070"
+  integrity sha512-cYDUpvIzhBVnMzRoY1fkSEhK/HmwEVwlyULYgn/tMQYd6Obag3ylCjONle3gdErfXBW61SVTlR9QR7uWlgeIkg==
+  dependencies:
+    "@babel/types" "^7.14.8"
+    jsesc "^2.5.1"
+    source-map "^0.5.0"
+
 "@babel/helper-annotate-as-pure@^7.10.4", "@babel/helper-annotate-as-pure@^7.12.13":
   version "7.12.13"
   resolved "https://registry.yarnpkg.com/@babel/helper-annotate-as-pure/-/helper-annotate-as-pure-7.12.13.tgz#0f58e86dfc4bb3b1fcd7db806570e177d439b6ab"
@@ -376,6 +385,20 @@
     "@babel/traverse" "^7.14.5"
     "@babel/types" "^7.14.5"
 
+"@babel/helper-module-transforms@^7.14.8":
+  version "7.14.8"
+  resolved "https://registry.yarnpkg.com/@babel/helper-module-transforms/-/helper-module-transforms-7.14.8.tgz#d4279f7e3fd5f4d5d342d833af36d4dd87d7dc49"
+  integrity sha512-RyE+NFOjXn5A9YU1dkpeBaduagTlZ0+fccnIcAGbv1KGUlReBj7utF7oEth8IdIBQPcux0DDgW5MFBH2xu9KcA==
+  dependencies:
+    "@babel/helper-module-imports" "^7.14.5"
+    "@babel/helper-replace-supers" "^7.14.5"
+    "@babel/helper-simple-access" "^7.14.8"
+    "@babel/helper-split-export-declaration" "^7.14.5"
+    "@babel/helper-validator-identifier" "^7.14.8"
+    "@babel/template" "^7.14.5"
+    "@babel/traverse" "^7.14.8"
+    "@babel/types" "^7.14.8"
+
 "@babel/helper-optimise-call-expression@^7.12.13":
   version "7.12.13"
   resolved "https://registry.yarnpkg.com/@babel/helper-optimise-call-expression/-/helper-optimise-call-expression-7.12.13.tgz#5c02d171b4c8615b1e7163f888c1c81c30a2aaea"
@@ -452,6 +475,13 @@
   dependencies:
     "@babel/types" "^7.14.5"
 
+"@babel/helper-simple-access@^7.14.8":
+  version "7.14.8"
+  resolved "https://registry.yarnpkg.com/@babel/helper-simple-access/-/helper-simple-access-7.14.8.tgz#82e1fec0644a7e775c74d305f212c39f8fe73924"
+  integrity sha512-TrFN4RHh9gnWEU+s7JloIho2T76GPwRHhdzOWLqTrMnlas8T9O7ec+oEDNsRXndOmru9ymH9DFrEOxpzPoSbdg==
+  dependencies:
+    "@babel/types" "^7.14.8"
+
 "@babel/helper-skip-transparent-expression-wrappers@^7.12.1":
   version "7.12.1"
   resolved "https://registry.yarnpkg.com/@babel/helper-skip-transparent-expression-wrappers/-/helper-skip-transparent-expression-wrappers-7.12.1.tgz#462dc63a7e435ade8468385c63d2b84cce4b3cbf"
@@ -490,6 +520,11 @@
   resolved "https://registry.yarnpkg.com/@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.yarnpkg.com/@babel/helper-validator-identifier/-/helper-validator-identifier-7.14.8.tgz#32be33a756f29e278a0d644fa08a2c9e0f88a34c"
+  integrity sha512-ZGy6/XQjllhYQrNw/3zfWRwZCTVSiBLZ9DHVZxn9n2gip/7ab8mv2TWlKPIBk26RwedCBoWdjLmn+t9na2Gcow==
+
 "@babel/helper-validator-option@^7.12.17":
   version "7.12.17"
   resolved "https://registry.yarnpkg.com/@babel/helper-validator-option/-/helper-validator-option-7.12.17.tgz#d1fbf012e1a79b7eebbfdc6d270baaf8d9eb9831"
@@ -529,14 +564,14 @@
     "@babel/traverse" "^7.13.0"
     "@babel/types" "^7.13.0"
 
-"@babel/helpers@^7.14.6":
-  version "7.14.6"
-  resolved "https://registry.yarnpkg.com/@babel/helpers/-/helpers-7.14.6.tgz#5b58306b95f1b47e2a0199434fa8658fa6c21635"
-  integrity sha512-yesp1ENQBiLI+iYHSJdoZKUtRpfTlL1grDIX9NRlAVppljLw/4tTyYupIB7uIYmC3stW/imAv8EqaKaS/ibmeA==
+"@babel/helpers@^7.14.8":
+  version "7.14.8"
+  resolved "https://registry.yarnpkg.com/@babel/helpers/-/helpers-7.14.8.tgz#839f88f463025886cff7f85a35297007e2da1b77"
+  integrity sha512-ZRDmI56pnV+p1dH6d+UN6GINGz7Krps3+270qqI9UJ4wxYThfAIcI5i7j5vXC4FJ3Wap+S9qcebxeYiqn87DZw==
   dependencies:
     "@babel/template" "^7.14.5"
-    "@babel/traverse" "^7.14.5"
-    "@babel/types" "^7.14.5"
+    "@babel/traverse" "^7.14.8"
+    "@babel/types" "^7.14.8"
 
 "@babel/highlight@^7.10.4", "@babel/highlight@^7.12.13":
   version "7.13.10"
@@ -566,10 +601,10 @@
   resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.14.5.tgz#4cd2f346261061b2518873ffecdf1612cb032829"
   integrity sha512-TM8C+xtH/9n1qzX+JNHi7AN2zHMTiPUtspO0ZdHflW8KaskkALhMmuMHb4bCmNdv9VAPzJX3/bXqkVLnAvsPfg==
 
-"@babel/parser@^7.14.6":
-  version "7.14.6"
-  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.14.6.tgz#d85cc68ca3cac84eae384c06f032921f5227f4b2"
-  integrity sha512-oG0ej7efjEXxb4UgE+klVx+3j4MVo+A2vCzm7OUN4CLo6WhQ+vSOD2yJ8m7B+DghObxtLxt3EfgMWpq+AsWehQ==
+"@babel/parser@^7.14.8":
+  version "7.14.8"
+  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.14.8.tgz#66fd41666b2d7b840bd5ace7f7416d5ac60208d4"
+  integrity sha512-syoCQFOoo/fzkWDeM0dLEZi5xqurb5vuyzwIMNZRNun+N/9A4cUZeQaE7dTrB8jGaKuJRBtEOajtnmw0I5hvvA==
 
 "@babel/plugin-bugfix-v8-spread-parameters-in-optional-chaining@^7.13.12":
   version "7.13.12"
@@ -1497,10 +1532,10 @@
     "@babel/helper-create-regexp-features-plugin" "^7.14.5"
     "@babel/helper-plugin-utils" "^7.14.5"
 
-"@babel/preset-env@7.14.7":
-  version "7.14.7"
-  resolved "https://registry.yarnpkg.com/@babel/preset-env/-/preset-env-7.14.7.tgz#5c70b22d4c2d893b03d8c886a5c17422502b932a"
-  integrity sha512-itOGqCKLsSUl0Y+1nSfhbuuOlTs0MJk2Iv7iSH+XT/mR8U1zRLO7NjWlYXB47yhK4J/7j+HYty/EhFZDYKa/VA==
+"@babel/preset-env@7.14.8":
+  version "7.14.8"
+  resolved "https://registry.yarnpkg.com/@babel/preset-env/-/preset-env-7.14.8.tgz#254942f5ca80ccabcfbb2a9f524c74bca574005b"
+  integrity sha512-a9aOppDU93oArQ51H+B8M1vH+tayZbuBqzjOhntGetZVa+4tTu5jp+XTwqHGG2lxslqomPYVSjIxQkFwXzgnxg==
   dependencies:
     "@babel/compat-data" "^7.14.7"
     "@babel/helper-compilation-targets" "^7.14.5"
@@ -1569,7 +1604,7 @@
     "@babel/plugin-transform-unicode-escapes" "^7.14.5"
     "@babel/plugin-transform-unicode-regex" "^7.14.5"
     "@babel/preset-modules" "^0.1.4"
-    "@babel/types" "^7.14.5"
+    "@babel/types" "^7.14.8"
     babel-plugin-polyfill-corejs2 "^0.2.2"
     babel-plugin-polyfill-corejs3 "^0.2.2"
     babel-plugin-polyfill-regenerator "^0.2.2"
@@ -1748,6 +1783,21 @@
     debug "^4.1.0"
     globals "^11.1.0"
 
+"@babel/traverse@^7.14.8":
+  version "7.14.8"
+  resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.14.8.tgz#c0253f02677c5de1a8ff9df6b0aacbec7da1a8ce"
+  integrity sha512-kexHhzCljJcFNn1KYAQ6A5wxMRzq9ebYpEDV4+WdNyr3i7O44tanbDOR/xjiG2F3sllan+LgwK+7OMk0EmydHg==
+  dependencies:
+    "@babel/code-frame" "^7.14.5"
+    "@babel/generator" "^7.14.8"
+    "@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"
+    debug "^4.1.0"
+    globals "^11.1.0"
+
 "@babel/types@^7.12.1", "@babel/types@^7.12.13", "@babel/types@^7.13.0", "@babel/types@^7.13.12", "@babel/types@^7.13.14", "@babel/types@^7.4.4":
   version "7.13.14"
   resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.13.14.tgz#c35a4abb15c7cd45a2746d78ab328e362cbace0d"
@@ -1765,6 +1815,14 @@
     "@babel/helper-validator-identifier" "^7.14.5"
     to-fast-properties "^2.0.0"
 
+"@babel/types@^7.14.8":
+  version "7.14.8"
+  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.14.8.tgz#38109de8fcadc06415fbd9b74df0065d4d41c728"
+  integrity sha512-iob4soQa7dZw8nodR/KlOQkPh9S4I8RwCxwRIFuiMRYjOzH/KJzdUfDgz6cGi5dDaclXF4P2PAhCdrBJNIg68Q==
+  dependencies:
+    "@babel/helper-validator-identifier" "^7.14.8"
+    to-fast-properties "^2.0.0"
+
 "@bcoe/v8-coverage@^0.2.3":
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/@bcoe/v8-coverage/-/v8-coverage-0.2.3.tgz#75a2e8b51cb758a7553d6804a5932d7aace75c39"