diff --git a/packages/build/package.json b/packages/build/package.json
index b397e93..a299395 100644
--- a/packages/build/package.json
+++ b/packages/build/package.json
@@ -24,6 +24,7 @@
   "dependencies": {
     "@babel/eslint-parser": "^7.13.10",
     "@babel/plugin-proposal-class-properties": "^7.12.13",
+    "@babel/plugin-proposal-optional-chaining": "^7.12.16",
     "@babel/plugin-proposal-private-methods": "^7.12.13",
     "@babel/plugin-syntax-jsx": "^7.12.13",
     "@neutrinojs/airbnb": "^9.4.0",
diff --git a/packages/build/src/build/.babelrc.js b/packages/build/src/build/.babelrc.js
index eb854b9..fa8339a 100644
--- a/packages/build/src/build/.babelrc.js
+++ b/packages/build/src/build/.babelrc.js
@@ -6,6 +6,7 @@ module.exports = (api) => {
   api.cache(true);
   const plugins = [
     '@babel/plugin-proposal-class-properties',
+    '@babel/plugin-proposal-optional-chaining',
     '@babel/plugin-proposal-private-methods',
     '@babel/plugin-syntax-jsx',
     [
diff --git a/packages/build/yarn.lock b/packages/build/yarn.lock
index 56ec62d..046c7d8 100644
--- a/packages/build/yarn.lock
+++ b/packages/build/yarn.lock
@@ -111,7 +111,7 @@
   dependencies:
     "@babel/types" "^7.12.13"
 
-"@babel/helper-plugin-utils@^7.12.13":
+"@babel/helper-plugin-utils@^7.12.13", "@babel/helper-plugin-utils@^7.8.0":
   version "7.12.13"
   resolved "http://npm.cha0sdev/@babel%2fhelper-plugin-utils/-/helper-plugin-utils-7.12.13.tgz#174254d0f2424d8aefb4dd48057511247b0a9eeb"
   integrity sha512-C+10MXCXJLiR6IeG9+Wiejt9jmtFpxUc3MQqCmPY8hfCjyUGl9kT+B2okzEZrtykiwrc4dbCPdDoz0A/HQbDaA==
@@ -133,6 +133,13 @@
   dependencies:
     "@babel/types" "^7.12.13"
 
+"@babel/helper-skip-transparent-expression-wrappers@^7.12.1":
+  version "7.12.1"
+  resolved "http://npm.cha0sdev/@babel%2fhelper-skip-transparent-expression-wrappers/-/helper-skip-transparent-expression-wrappers-7.12.1.tgz#462dc63a7e435ade8468385c63d2b84cce4b3cbf"
+  integrity sha512-Mf5AUuhG1/OCChOJ/HcADmvcHM42WJockombn8ATJG3OnyiSxBK/Mm5x78BQWvmtXZKHgbjdGL2kin/HOLlZGA==
+  dependencies:
+    "@babel/types" "^7.12.1"
+
 "@babel/helper-split-export-declaration@^7.12.13":
   version "7.12.13"
   resolved "http://npm.cha0sdev/@babel%2fhelper-split-export-declaration/-/helper-split-export-declaration-7.12.13.tgz#e9430be00baf3e88b0e13e6f9d4eaf2136372b05"
@@ -176,6 +183,15 @@
     "@babel/helper-create-class-features-plugin" "^7.12.13"
     "@babel/helper-plugin-utils" "^7.12.13"
 
+"@babel/plugin-proposal-optional-chaining@^7.12.16":
+  version "7.12.16"
+  resolved "http://npm.cha0sdev/@babel%2fplugin-proposal-optional-chaining/-/plugin-proposal-optional-chaining-7.12.16.tgz#600c7531f754186b0f2096e495a92da7d88aa139"
+  integrity sha512-O3ohPwOhkwji5Mckb7F/PJpJVJY3DpPsrt/F0Bk40+QMk9QpAIqeGusHWqu/mYqsM8oBa6TziL/2mbERWsUZjg==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.12.13"
+    "@babel/helper-skip-transparent-expression-wrappers" "^7.12.1"
+    "@babel/plugin-syntax-optional-chaining" "^7.8.0"
+
 "@babel/plugin-proposal-private-methods@^7.12.13":
   version "7.12.13"
   resolved "http://npm.cha0sdev/@babel%2fplugin-proposal-private-methods/-/plugin-proposal-private-methods-7.12.13.tgz#ea78a12554d784ecf7fc55950b752d469d9c4a71"
@@ -191,6 +207,13 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.12.13"
 
+"@babel/plugin-syntax-optional-chaining@^7.8.0":
+  version "7.8.3"
+  resolved "http://npm.cha0sdev/@babel%2fplugin-syntax-optional-chaining/-/plugin-syntax-optional-chaining-7.8.3.tgz#4f69c2ab95167e0180cd5336613f8c5788f7d48a"
+  integrity sha512-KoK9ErH1MBlCPxV0VANkXW2/dw4vlbGDrFgz8bmUsBGYkFRcbRwMh6cIJubdPrkxRwuGdtCk0v/wPTKbQgBjkg==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.8.0"
+
 "@babel/plugin-transform-modules-commonjs@^7.12.1":
   version "7.12.13"
   resolved "http://npm.cha0sdev/@babel%2fplugin-transform-modules-commonjs/-/plugin-transform-modules-commonjs-7.12.13.tgz#5043b870a784a8421fa1fd9136a24f294da13e50"
@@ -251,7 +274,7 @@
     globals "^11.1.0"
     lodash "^4.17.19"
 
-"@babel/types@^7.12.13", "@babel/types@^7.7.0":
+"@babel/types@^7.12.1", "@babel/types@^7.12.13", "@babel/types@^7.7.0":
   version "7.12.13"
   resolved "http://npm.cha0sdev/@babel%2ftypes/-/types-7.12.13.tgz#8be1aa8f2c876da11a9cf650c0ecf656913ad611"
   integrity sha512-oKrdZTld2im1z8bDwTOQvUbxKwE+854zc16qWZQlcTqMN00pWxHQ4ZeOq0yDMnisOpRykH2/5Qqcrk/OlbAjiQ==