init: correct .eslintrc and add .prettierrc

.eslintrc

@@ -8,12 +8,15 @@
     "parserOptions": {
         "requireConfigFile": false,
         "babelOptions": {
-             "presets": ["@babel/preset-react"]
+            "presets": [
+                "@babel/preset-react"
+            ]
         }
-},
+    },
     "extends": [
         "react-app",
         "airbnb",
+        "prettier",
         "plugin:prettier/recommended"
     ],
     "plugins": [
@@ -58,7 +61,12 @@
                 ]
             }
         ],
-        "import/no-extraneous-dependencies": ["warn", {"devDependencies": true}],
+        "import/no-extraneous-dependencies": [
+            "warn",
+            {
+                "devDependencies": true
+            }
+        ],
         "no-unused-vars": "off",
         "no-console": "off",
         "no-use-before-define": "off",
@@ -82,4 +90,4 @@
         "react/jsx-no-bind": "off",
         "unused-imports/no-unused-imports": "warn"
     }
-}
+}

.prettierrc

@@ -0,0 +1,15 @@
+{
+  "arrowParens": "always",
+  "bracketSpacing": true,
+  "jsxBracketSameLine": false,
+  "jsxSingleQuote": false,
+  "printWidth": 100,
+  "proseWrap": "always",
+  "quoteProps": "as-needed",
+  "semi": true,
+  "singleQuote": true,
+  "tabWidth": 2,
+  "trailingComma": "es5",
+  "useTabs": false,
+  "endOfLine": "auto"
+}