From 7bc23c32ee44675d2b45bf82e63fb651e1f5a737 Mon Sep 17 00:00:00 2001
From: sienori <iilll7d6f@yahoo.co.jp>
Date: Sat, 5 Mar 2022 17:49:30 +0900
Subject: [PATCH] Fix not working on legacy browsers

---
 babel.config.js   |  2 +-
 package-lock.json | 52 +++++++++++++++++++++++++++++++++++++++++++++++
 package.json      |  1 +
 3 files changed, 54 insertions(+), 1 deletion(-)

diff --git a/babel.config.js b/babel.config.js
index 21254eb..99c2b42 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -10,5 +10,5 @@ module.exports = {
     ],
     "@babel/preset-react"
   ],
-  plugins: ["@babel/plugin-proposal-nullish-coalescing-operator", "@babel/plugin-syntax-optional-chaining", "@babel/plugin-proposal-object-rest-spread", "transform-class-properties"]
+  plugins: ["@babel/plugin-proposal-nullish-coalescing-operator", "@babel/plugin-proposal-optional-chaining", "@babel/plugin-syntax-optional-chaining", "@babel/plugin-proposal-object-rest-spread", "transform-class-properties"]
 };
diff --git a/package-lock.json b/package-lock.json
index 10a6e08..fd861f1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -240,6 +240,39 @@
         "@babel/types": "^7.0.0"
       }
     },
+    "@babel/helper-skip-transparent-expression-wrappers": {
+      "version": "7.16.0",
+      "resolved": "https://registry.npmjs.org/@babel/helper-skip-transparent-expression-wrappers/-/helper-skip-transparent-expression-wrappers-7.16.0.tgz",
+      "integrity": "sha512-+il1gTy0oHwUsBQZyJvukbB4vPMdcYBrFHa0Uc4AizLxbq6BOYC51Rv4tWocX9BLBDLZ4kc6qUFpQ6HRgL+3zw==",
+      "dev": true,
+      "requires": {
+        "@babel/types": "^7.16.0"
+      },
+      "dependencies": {
+        "@babel/helper-validator-identifier": {
+          "version": "7.16.7",
+          "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.16.7.tgz",
+          "integrity": "sha512-hsEnFemeiW4D08A5gUAZxLBTXpZ39P+a+DGDsHw1yxqyQ/jzFEnxf5uTEGp+3bzAbNOxU1paTgYS4ECU/IgfDw==",
+          "dev": true
+        },
+        "@babel/types": {
+          "version": "7.17.0",
+          "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.17.0.tgz",
+          "integrity": "sha512-TmKSNO4D5rzhL5bjWFcVHHLETzfQ/AmbKpKPOSjlP0WoHZ6L911fgoOKY4Alp/emzG4cHJdyN49zpgkbXFEHHw==",
+          "dev": true,
+          "requires": {
+            "@babel/helper-validator-identifier": "^7.16.7",
+            "to-fast-properties": "^2.0.0"
+          }
+        },
+        "to-fast-properties": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-2.0.0.tgz",
+          "integrity": "sha1-3F5pjL0HkmW8c+A3doGk5Og/YW4=",
+          "dev": true
+        }
+      }
+    },
     "@babel/helper-split-export-declaration": {
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.0.0.tgz",
@@ -416,6 +449,25 @@
         "@babel/plugin-syntax-optional-catch-binding": "^7.0.0"
       }
     },
+    "@babel/plugin-proposal-optional-chaining": {
+      "version": "7.16.7",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-optional-chaining/-/plugin-proposal-optional-chaining-7.16.7.tgz",
+      "integrity": "sha512-eC3xy+ZrUcBtP7x+sq62Q/HYd674pPTb/77XZMb5wbDPGWIdUbSr4Agr052+zaUPSb+gGRnjxXfKFvx5iMJ+DA==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-plugin-utils": "^7.16.7",
+        "@babel/helper-skip-transparent-expression-wrappers": "^7.16.0",
+        "@babel/plugin-syntax-optional-chaining": "^7.8.3"
+      },
+      "dependencies": {
+        "@babel/helper-plugin-utils": {
+          "version": "7.16.7",
+          "resolved": "https://registry.npmjs.org/@babel/helper-plugin-utils/-/helper-plugin-utils-7.16.7.tgz",
+          "integrity": "sha512-Qg3Nk7ZxpgMrsox6HreY1ZNKdBq7K72tDSliA6dCl5f007jR4ne8iD5UzuNnCJH2xBf2BEEVGr+/OL6Gdp7RxA==",
+          "dev": true
+        }
+      }
+    },
     "@babel/plugin-proposal-unicode-property-regex": {
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-unicode-property-regex/-/plugin-proposal-unicode-property-regex-7.0.0.tgz",
diff --git a/package.json b/package.json
index 00e4c42..3a4d42a 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
     "@babel/core": "^7.0.0-beta.49",
     "@babel/plugin-proposal-nullish-coalescing-operator": "^7.16.7",
     "@babel/plugin-proposal-object-rest-spread": "^7.9.6",
+    "@babel/plugin-proposal-optional-chaining": "^7.16.7",
     "@babel/plugin-syntax-jsx": "^7.2.0",
     "@babel/plugin-syntax-optional-chaining": "^7.8.3",
     "@babel/preset-env": "^7.0.0-beta.49",