Revert "Add support for optional chaining and nullish coalescing to b…

…abel"

.eslintrc.yml

@@ -5,12 +5,10 @@ env:
 extends:
   - airbnb
   - prettier
-parser: 'babel-eslint'
 plugins:
   - jest
   - prettier
   - react-hooks
-  - babel
 settings:
   import/resolver:
     webpack:

babel.config.js

@@ -1,17 +1,13 @@
-module.exports = (api) => {
+module.exports = function(api) {
   api.cache(true);
   return {
     presets: [
-      [
-        '@babel/preset-env',
-        {
-          useBuiltIns: 'usage',
-          corejs: 3,
-          exclude: ['es.promise'],
-        },
-      ],
+      ['@babel/preset-env', {
+        useBuiltIns: 'usage',
+        corejs: 3,
+        exclude: ['es.promise'],
+      }],
       '@babel/preset-react',
     ],
-    plugins: ['@babel/plugin-proposal-nullish-coalescing-operator', '@babel/plugin-proposal-optional-chaining'],
   };
 };

package.json

@@ -88,13 +88,10 @@
   },
   "devDependencies": {
     "@babel/core": "^7.7.2",
-    "@babel/plugin-proposal-nullish-coalescing-operator": "^7.8.3",
-    "@babel/plugin-proposal-optional-chaining": "^7.8.3",
     "@babel/preset-env": "^7.7.1",
     "@babel/preset-react": "^7.7.0",
     "@testing-library/jest-dom": "^5.0.0",
     "@testing-library/react": "^9.4.0",
-    "babel-eslint": "^10.1.0",
     "babel-jest": "^24.9.0",
     "babel-loader": "^8.0.6",
     "chart.js": "^2.9.2",
@@ -103,7 +100,6 @@
     "eslint-config-airbnb": "^18.0.1",
     "eslint-config-prettier": "^6.5.0",
     "eslint-import-resolver-webpack": "^0.12.1",
-    "eslint-plugin-babel": "^5.3.0",
     "eslint-plugin-import": "^2.18.2",
     "eslint-plugin-jest": "^23.1.1",
     "eslint-plugin-jsx-a11y": "^6.2.3",