enable Fast Refresh

Following this guide: https://dutzi.party/react-fast-refresh/

This enables code changes in dev to appear faster and preserve state, instead of reloading the page!

config-overrides.js

@@ -0,0 +1,4 @@
+const { override } = require("customize-cra");
+const { addReactRefresh } = require("customize-cra-react-refresh");
+
+module.exports = override(addReactRefresh());

package.json

@@ -30,9 +30,9 @@
     "react-transition-group": "^4.3.0"
   },
   "scripts": {
-    "start": "react-scripts start",
+    "start": "react-app-rewired start",
-    "build": "react-scripts build",
+    "build": "react-app-rewired build",
-    "test": "react-scripts test",
+    "test": "react-app-rewired test --env=jsdom",
     "eject": "react-scripts eject",
     "setup-mysql-user": "mysql -h impress.openneo.net -u matchu -p < setup-mysql-user.sql",
     "mysql": "mysql --host=impress.openneo.net --user=$(dotenv -p IMPRESS_MYSQL_USER) --password=$(dotenv -p IMPRESS_MYSQL_PASSWORD) --database=openneo_impress"
@@ -54,7 +54,10 @@
   },
   "devDependencies": {
     "apollo-server-testing": "^2.12.0",
+    "customize-cra": "^1.0.0",
+    "customize-cra-react-refresh": "^1.1.0",
     "dotenv-cli": "^3.1.0",
-    "prettier": "^2.0.5"
+    "prettier": "^2.0.5",
+    "react-app-rewired": "^2.1.6"
   }
 }

yarn.lock

@@ -1854,6 +1854,18 @@
   resolved "https://registry.yarnpkg.com/@nodelib/fs.stat/-/fs.stat-1.1.3.tgz#2b5a3ab3f918cca48a8c754c08168e3f03eba61b"
   integrity sha512-shAmDyaQC4H92APFoIaVDHCx5bStIocgvbwQyxPRrbUY20V1EYTbSDchWbuwlMG3V17cprZhA6+78JfB+3DTPw==
 
+"@pmmmwh/react-refresh-webpack-plugin@^0.3.2":
+  version "0.3.3"
+  resolved "https://registry.yarnpkg.com/@pmmmwh/react-refresh-webpack-plugin/-/react-refresh-webpack-plugin-0.3.3.tgz#40a3d674f42a011b7f30a9609aa8fb68ec3c39c9"
+  integrity sha512-uc6FmPEegAZawSHjUMFQwU7EjaDn7zy1iD/KD/wBROL9F4378OES8MKMYHoRAKT61Fk7LxVKZSDR5VespMQiqw==
+  dependencies:
+    ansi-html "^0.0.7"
+    error-stack-parser "^2.0.6"
+    html-entities "^1.2.1"
+    lodash.debounce "^4.0.8"
+    native-url "^0.2.6"
+    schema-utils "^2.6.5"
+
 "@popperjs/core@2.4.3":
   version "2.4.3"
   resolved "https://registry.yarnpkg.com/@popperjs/core/-/core-2.4.3.tgz#9b10ec423989d3a7fe46f3d8a9cafe8589ccf354"
@@ -2811,7 +2823,7 @@ ansi-escapes@^4.2.1:
   dependencies:
     type-fest "^0.11.0"
 
-ansi-html@0.0.7:
+ansi-html@0.0.7, ansi-html@^0.0.7:
   version "0.0.7"
   resolved "https://registry.yarnpkg.com/ansi-html/-/ansi-html-0.0.7.tgz#813584021962a9e9e6fd039f940d12f56ca7859e"
   integrity sha1-gTWEAhliqenm/QOflA0S9WynhZ4=
@@ -4749,6 +4761,21 @@ csstype@^2.2.0, csstype@^2.5.7, csstype@^2.6.7:
   resolved "https://registry.yarnpkg.com/csstype/-/csstype-2.6.10.tgz#e63af50e66d7c266edb6b32909cfd0aabe03928b"
   integrity sha512-D34BqZU4cIlMCY93rZHbrq9pjTAQJ3U8S8rfBqjwHxkGPThWFjzZDQpgMJY0QViLxth6ZKYiwFBo14RdN44U/w==
 
+customize-cra-react-refresh@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/customize-cra-react-refresh/-/customize-cra-react-refresh-1.1.0.tgz#0bb3723028b94d8f6f97af26b1f4aec0636271df"
+  integrity sha512-v7moZc3mv0ZnM9hUnC9YpUhjpWkCjYSL/oLx/y8o5CKFOnd3yOPxlmfMjrmpWTVPbpOIFTCPGjDIAiEYu63TGg==
+  dependencies:
+    "@pmmmwh/react-refresh-webpack-plugin" "^0.3.2"
+    react-refresh "^0.8.1"
+
+customize-cra@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/customize-cra/-/customize-cra-1.0.0.tgz#73286563631aa08127ad4d30a2e3c89cf4e93c8d"
+  integrity sha512-DbtaLuy59224U+xCiukkxSq8clq++MOtJ1Et7LED1fLszWe88EoblEYFBJ895sB1mC6B4uu3xPT/IjClELhMbA==
+  dependencies:
+    lodash.flow "^3.5.0"
+
 cyclist@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/cyclist/-/cyclist-1.0.1.tgz#596e9698fd0c80e12038c2b82d6eb1b35b6224d9"
@@ -5240,6 +5267,13 @@ error-ex@^1.2.0, error-ex@^1.3.1:
   dependencies:
     is-arrayish "^0.2.1"
 
+error-stack-parser@^2.0.6:
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/error-stack-parser/-/error-stack-parser-2.0.6.tgz#5a99a707bd7a4c58a797902d48d82803ede6aad8"
+  integrity sha512-d51brTeqC+BHlwF0BhPtcYgF5nlzf9ZZ0ZIUQNZpc9ZB9qw5IJ2diTrBY9jlCJkTLITYPjmiX6OWCwH+fuyNgQ==
+  dependencies:
+    stackframe "^1.1.1"
+
 es-abstract@^1.17.0, es-abstract@^1.17.0-next.1, es-abstract@^1.17.2:
   version "1.17.4"
   resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.17.4.tgz#e3aedf19706b20e7c2594c35fc0d57605a79e184"
@@ -7943,6 +7977,16 @@ lodash._reinterpolate@^3.0.0:
   resolved "https://registry.yarnpkg.com/lodash._reinterpolate/-/lodash._reinterpolate-3.0.0.tgz#0ccf2d89166af03b3663c796538b75ac6e114d9d"
   integrity sha1-DM8tiRZq8Ds2Y8eWU4t1rG4RTZ0=
 
+lodash.debounce@^4.0.8:
+  version "4.0.8"
+  resolved "https://registry.yarnpkg.com/lodash.debounce/-/lodash.debounce-4.0.8.tgz#82d79bff30a67c4005ffd5e2515300ad9ca4d7af"
+  integrity sha1-gteb/zCmfEAF/9XiUVMArZyk168=
+
+lodash.flow@^3.5.0:
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/lodash.flow/-/lodash.flow-3.5.0.tgz#87bf40292b8cf83e4e8ce1a3ae4209e20071675a"
+  integrity sha1-h79AKSuM+D5OjOGjrkIJ4gBxZ1o=
+
 lodash.memoize@^4.1.2:
   version "4.1.2"
   resolved "https://registry.yarnpkg.com/lodash.memoize/-/lodash.memoize-4.1.2.tgz#bcc6c49a42a2840ed997f323eada5ecd182e0bfe"
@@ -8424,6 +8468,13 @@ nanomatch@^1.2.9:
     snapdragon "^0.8.1"
     to-regex "^3.0.1"
 
+native-url@^0.2.6:
+  version "0.2.6"
+  resolved "https://registry.yarnpkg.com/native-url/-/native-url-0.2.6.tgz#ca1258f5ace169c716ff44eccbddb674e10399ae"
+  integrity sha512-k4bDC87WtgrdD362gZz6zoiXQrl40kYlBmpfmSjwRO1VU0V5ccwJTlxuE72F6m3V0vc1xOf6n3UCP9QyerRqmA==
+  dependencies:
+    querystring "^0.2.0"
+
 natural-compare@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
@@ -10045,7 +10096,7 @@ querystring-es3@^0.2.0:
   resolved "https://registry.yarnpkg.com/querystring-es3/-/querystring-es3-0.2.1.tgz#9ec61f79049875707d69414596fd907a4d711e73"
   integrity sha1-nsYfeQSYdXB9aUFFlv2Qek1xHnM=
 
-querystring@0.2.0:
+querystring@0.2.0, querystring@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/querystring/-/querystring-0.2.0.tgz#b209849203bb25df820da756e747005878521620"
   integrity sha1-sgmEkgO7Jd+CDadW50cAWHhSFiA=
@@ -10112,6 +10163,13 @@ react-app-polyfill@^1.0.6:
     regenerator-runtime "^0.13.3"
     whatwg-fetch "^3.0.0"
 
+react-app-rewired@^2.1.6:
+  version "2.1.6"
+  resolved "https://registry.yarnpkg.com/react-app-rewired/-/react-app-rewired-2.1.6.tgz#33ee3076a7f34d6a7c94e649cac67e7c8c580de8"
+  integrity sha512-06flj0kK5tf/RN4naRv/sn6j3sQd7rsURoRLKLpffXDzJeNiAaTNic+0I8Basojy5WDwREkTqrMLewSAjcb13w==
+  dependencies:
+    semver "^5.6.0"
+
 react-clientside-effect@^1.2.2:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/react-clientside-effect/-/react-clientside-effect-1.2.2.tgz#6212fb0e07b204e714581dd51992603d1accc837"
@@ -10181,6 +10239,11 @@ react-is@^16.12.0, react-is@^16.6.0, react-is@^16.7.0, react-is@^16.8.1, react-i
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.13.1.tgz#789729a4dc36de2999dc156dd6c1d9c18cea56a4"
   integrity sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ==
 
+react-refresh@^0.8.1:
+  version "0.8.3"
+  resolved "https://registry.yarnpkg.com/react-refresh/-/react-refresh-0.8.3.tgz#721d4657672d400c5e3c75d063c4a85fb2d5d68f"
+  integrity sha512-X8jZHc7nCMjaCqoU+V2I0cOhNW+QMBwSUkeXnTi8IPe6zaRWfn60ZzvFDZqWPfmSJfjub7dDW1SP0jaHWLu/hg==
+
 react-remove-scroll-bar@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/react-remove-scroll-bar/-/react-remove-scroll-bar-2.1.0.tgz#edafe9b42a42c0dad9bdd10712772a1f9a39d7b9"
@@ -11266,6 +11329,11 @@ stack-utils@^1.0.1:
   resolved "https://registry.yarnpkg.com/stack-utils/-/stack-utils-1.0.2.tgz#33eba3897788558bebfc2db059dc158ec36cebb8"
   integrity sha512-MTX+MeG5U994cazkjd/9KNAapsHnibjMLnfXodlkXw76JEea0UiNzrqidzo1emMwk7w5Qhc9jd4Bn9TBb1MFwA==
 
+stackframe@^1.1.1:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/stackframe/-/stackframe-1.2.0.tgz#52429492d63c62eb989804c11552e3d22e779303"
+  integrity sha512-GrdeshiRmS1YLMYgzF16olf2jJ/IzxXY9lhKOskuVziubpTYcYqyOwYeJKzQkwy7uN0fYSsbsC4RQaXf9LCrYA==
+
 static-extend@^0.1.1:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/static-extend/-/static-extend-0.1.2.tgz#60809c39cbff55337226fd5e0b520f341f1fb5c6"