From 943a2ccc4b159273a70e1fdb05ee8c133972a921 Mon Sep 17 00:00:00 2001
From: EnixCoda <enixcoda@gmail.com>
Date: Wed, 13 Nov 2019 13:44:57 +0800
Subject: [PATCH] build: support optional chaining

---
 .babelrc     |  5 +++--
 package.json |  1 +
 yarn.lock    | 15 +++++++++++++++
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/.babelrc b/.babelrc
index e952314..4d21215 100644
--- a/.babelrc
+++ b/.babelrc
@@ -5,13 +5,14 @@
       {
         "targets": {
           "chrome": "67"
-        },
+        }
       }
     ],
     "@babel/preset-typescript",
-    "@babel/preset-react",
+    "@babel/preset-react"
   ],
   "plugins": [
+    "@babel/plugin-proposal-optional-chaining",
     "@babel/plugin-proposal-class-properties",
     "@babel/plugin-proposal-object-rest-spread"
   ]
diff --git a/package.json b/package.json
index b5d5721..8643643 100644
--- a/package.json
+++ b/package.json
@@ -40,6 +40,7 @@
     "@babel/core": "^7.3.4",
     "@babel/plugin-proposal-class-properties": "^7.3.4",
     "@babel/plugin-proposal-object-rest-spread": "^7.3.4",
+    "@babel/plugin-proposal-optional-chaining": "^7.6.0",
     "@babel/preset-env": "^7.3.4",
     "@babel/preset-react": "^7.0.0",
     "@babel/preset-typescript": "^7.3.3",
diff --git a/yarn.lock b/yarn.lock
index 4ab28d4..6f77807 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -304,6 +304,14 @@
     "@babel/helper-plugin-utils" "^7.0.0"
     "@babel/plugin-syntax-optional-catch-binding" "^7.2.0"
 
+"@babel/plugin-proposal-optional-chaining@^7.6.0":
+  version "7.6.0"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-optional-chaining/-/plugin-proposal-optional-chaining-7.6.0.tgz#e9bf1f9b9ba10c77c033082da75f068389041af8"
+  integrity sha512-kj4gkZ6qUggkprRq3Uh5KP8XnE1MdIO0J7MhdDX8+rAbB6dJ2UrensGIS+0NPZAaaJ1Vr0PN6oLUgXMU1uMcSg==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+    "@babel/plugin-syntax-optional-chaining" "^7.2.0"
+
 "@babel/plugin-proposal-unicode-property-regex@^7.4.4":
   version "7.4.4"
   resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-unicode-property-regex/-/plugin-proposal-unicode-property-regex-7.4.4.tgz#501ffd9826c0b91da22690720722ac7cb1ca9c78"
@@ -355,6 +363,13 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.0.0"
 
+"@babel/plugin-syntax-optional-chaining@^7.2.0":
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-syntax-optional-chaining/-/plugin-syntax-optional-chaining-7.2.0.tgz#a59d6ae8c167e7608eaa443fda9fa8fa6bf21dff"
+  integrity sha512-HtGCtvp5Uq/jH/WNUPkK6b7rufnCPLLlDAFN7cmACoIjaOOiXxUt3SswU5loHqrhtqTsa/WoLQ1OQ1AGuZqaWA==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+
 "@babel/plugin-syntax-typescript@^7.2.0":
   version "7.3.3"
   resolved "https://registry.yarnpkg.com/@babel/plugin-syntax-typescript/-/plugin-syntax-typescript-7.3.3.tgz#a7cc3f66119a9f7ebe2de5383cce193473d65991"