1. remove redundant eslint plugin

- eslint-import-resolver-typescript
- eslint-plugin-flowtype
- eslint-plugin-import

2. stop eslint from nagging react version not specified
jsx-eslint/eslint-plugin-react#1955 (comment)

3. remove redundant eslint config and rules

4. use popular recommended setting for easier config management and modern practices

Author: tylim88

.eslintrc

@@ -1,48 +1,27 @@
 {
     "root": true,
-    "env": {
-        "browser": true,
-        "es2021": true
-    },
     "extends": [
+        "eslint:recommended",
+        "plugin:@typescript-eslint/recommended",
+        "plugin:react/recommended",
         "plugin:react/jsx-runtime",
-        "plugin:jsx-a11y/recommended",
         "plugin:react-hooks/recommended",
-        "react-app",
+        "plugin:jsx-a11y/recommended",
         "plugin:prettier/recommended"
     ],
-    "ignorePatterns": ["**/node_modules", "**/dist", "**/build"],
-    "parser": "@typescript-eslint/parser",
-    "parserOptions": {
-        "requireConfigFile": false,
-        "ecmaFeatures": {
-            "experimentalObjectRestSpread": true,
-            "impliedStrict": true
-        },
-        "ecmaVersion": 12
+    "settings": {
+        "react": {
+            "version": "detect"
+        }
     },
-    "plugins": ["react"],
+    "parser": "@typescript-eslint/parser",
+    "ignorePatterns": ["**/node_modules", "**/dist", "**/build"],
     "rules": {
-        "react/jsx-filename-extension": 0,
-        "no-param-reassign": 0,
-        "react/prop-types": 1,
-        "react/require-default-props": 0,
-        "react/no-array-index-key": 0,
-        "react/jsx-props-no-spreading": 0,
-        "react/forbid-prop-types": 0,
-        "import/order": 0,
-        "no-console": 0,
-        "jsx-a11y/anchor-is-valid": 0,
-        "prefer-destructuring": 0,
-        "no-underscore-dangle": 0,
-        "no-shadow": 0,
-        "import/no-anonymous-default-export": 0,
-        "no-unused-vars": [
-            1,
-            {
-                "ignoreRestSiblings": false
-            }
-        ],
+        "@typescript-eslint/explicit-module-boundary-types": "off",
+        "no-unused-vars": "off",
+        "@typescript-eslint/no-unused-vars": "warn",
+        "no-undef": "off",
+        "no-console": "warn",
         "prettier/prettier": ["error"]
     }
 }

package.json

@@ -20,9 +20,6 @@
         "eslint": "^8.24.0",
         "eslint-config-prettier": "^8.3.0",
         "eslint-config-react-app": "7.0.1",
-        "eslint-import-resolver-typescript": "2.4.0",
-        "eslint-plugin-flowtype": "^8.0.3",
-        "eslint-plugin-import": "^2.23.3",
         "eslint-plugin-jsx-a11y": "6.6.1",
         "eslint-plugin-prettier": "^3.4.0",
         "eslint-plugin-react": "^7.26.1",