From e81c18e84c627514def00ddd144fc54809b571c1 Mon Sep 17 00:00:00 2001
From: Evan Hahn <69474926+EvanHahn-Signal@users.noreply.github.com>
Date: Thu, 11 Mar 2021 14:36:31 -0600
Subject: [PATCH] Storybook: allow optional chaining

---
 .babelrc.js  |  3 ++-
 package.json |  1 +
 yarn.lock    | 42 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 45 insertions(+), 1 deletion(-)

diff --git a/.babelrc.js b/.babelrc.js
index a302d6d5e..dbb5246d9 100644
--- a/.babelrc.js
+++ b/.babelrc.js
@@ -1,4 +1,4 @@
-// Copyright 2019-2020 Signal Messenger, LLC
+// Copyright 2019-2021 Signal Messenger, LLC
 // SPDX-License-Identifier: AGPL-3.0-only
 
 module.exports = {
@@ -9,6 +9,7 @@ module.exports = {
     'react-hot-loader/babel',
     'lodash',
     '@babel/plugin-proposal-class-properties',
+    '@babel/plugin-proposal-optional-chaining',
     // This plugin converts commonjs to esmodules which is required for
     // importing commonjs modules from esmodules in storybook. As a part of
     // converting to TypeScript we should use esmodules and can eventually
diff --git a/package.json b/package.json
index 1bf583f53..ba2f8d423 100644
--- a/package.json
+++ b/package.json
@@ -158,6 +158,7 @@
   "devDependencies": {
     "@babel/core": "7.7.7",
     "@babel/plugin-proposal-class-properties": "7.7.4",
+    "@babel/plugin-proposal-optional-chaining": "7.13.8",
     "@babel/plugin-transform-runtime": "7.8.3",
     "@babel/preset-react": "7.7.4",
     "@babel/preset-typescript": "7.7.7",
diff --git a/yarn.lock b/yarn.lock
index c5b7e55a5..703870dd0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -264,6 +264,11 @@
   resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.0.0.tgz#bbb3fbee98661c569034237cc03967ba99b4f250"
   integrity sha512-CYAOUCARwExnEixLdB6sDm2dIJ/YgEAKDM1MOeMeZu9Ld/bDgVo8aiWrXwcY7OBh+1Ea2uUcVRcxKk0GJvW7QA==
 
+"@babel/helper-plugin-utils@^7.13.0", "@babel/helper-plugin-utils@^7.8.0":
+  version "7.13.0"
+  resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.13.0.tgz#806526ce125aed03373bc416a828321e3a6a33af"
+  integrity sha512-ZPafIPSwzUlAoWT8DKs1W2VyF2gOWthGd5NGFMsBcMMol+ZhK+EQY/e6V96poa6PA/Bh+C9plWN0hXO1uB8AfQ==
+
 "@babel/helper-plugin-utils@^7.8.3":
   version "7.8.3"
   resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.8.3.tgz#9ea293be19babc0f52ff8ca88b34c3611b208670"
@@ -315,6 +320,13 @@
     "@babel/template" "^7.1.0"
     "@babel/types" "^7.0.0"
 
+"@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"
+  integrity sha512-Mf5AUuhG1/OCChOJ/HcADmvcHM42WJockombn8ATJG3OnyiSxBK/Mm5x78BQWvmtXZKHgbjdGL2kin/HOLlZGA==
+  dependencies:
+    "@babel/types" "^7.12.1"
+
 "@babel/helper-split-export-declaration@^7.4.4":
   version "7.4.4"
   resolved "https://registry.yarnpkg.com/@babel/helper-split-export-declaration/-/helper-split-export-declaration-7.4.4.tgz#ff94894a340be78f53f06af038b205c49d993677"
@@ -329,6 +341,11 @@
   dependencies:
     "@babel/types" "^7.7.4"
 
+"@babel/helper-validator-identifier@^7.12.11":
+  version "7.12.11"
+  resolved "https://registry.yarnpkg.com/@babel/helper-validator-identifier/-/helper-validator-identifier-7.12.11.tgz#c9a1f021917dcb5ccf0d4e453e399022981fc9ed"
+  integrity sha512-np/lG3uARFybkoHokJUmf1QfEvRVCPbmQeUQpKow5cQ3xWrV9i3rUHodKDJPQfTVX61qKi+UdYk8kik84n7XOw==
+
 "@babel/helper-wrap-function@^7.1.0":
   version "7.2.0"
   resolved "https://registry.yarnpkg.com/@babel/helper-wrap-function/-/helper-wrap-function-7.2.0.tgz#c4e0012445769e2815b55296ead43a958549f6fa"
@@ -447,6 +464,15 @@
     "@babel/helper-plugin-utils" "^7.0.0"
     "@babel/plugin-syntax-optional-catch-binding" "^7.2.0"
 
+"@babel/plugin-proposal-optional-chaining@7.13.8":
+  version "7.13.8"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-optional-chaining/-/plugin-proposal-optional-chaining-7.13.8.tgz#e39df93efe7e7e621841babc197982e140e90756"
+  integrity sha512-hpbBwbTgd7Cz1QryvwJZRo1U0k1q8uyBmeXOSQUjdg/A2TASkhR/rz7AyqZ/kS8kbpsNA80rOYbxySBJAqmhhQ==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.13.0"
+    "@babel/helper-skip-transparent-expression-wrappers" "^7.12.1"
+    "@babel/plugin-syntax-optional-chaining" "^7.8.3"
+
 "@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"
@@ -519,6 +545,13 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.0.0"
 
+"@babel/plugin-syntax-optional-chaining@^7.8.3":
+  version "7.8.3"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-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-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"
@@ -1099,6 +1132,15 @@
     lodash "^4.17.13"
     to-fast-properties "^2.0.0"
 
+"@babel/types@^7.12.1":
+  version "7.13.0"
+  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.13.0.tgz#74424d2816f0171b4100f0ab34e9a374efdf7f80"
+  integrity sha512-hE+HE8rnG1Z6Wzo+MhaKE5lM5eMx71T4EHJgku2E3xIfaULhDcxiiRxUYgwX8qwP1BBSlag+TdGOt6JAidIZTA==
+  dependencies:
+    "@babel/helper-validator-identifier" "^7.12.11"
+    lodash "^4.17.19"
+    to-fast-properties "^2.0.0"
+
 "@babel/types@^7.7.4":
   version "7.7.4"
   resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.7.4.tgz#516570d539e44ddf308c07569c258ff94fde9193"