Add same eslint config as in course module 5

Author: Anna Osipova

.eslintignore

@@ -1 +1,3 @@
-webpack.config.js
+webpack.config.js
+node_modules/
+dist/

.eslintrc.js

@@ -0,0 +1,49 @@
+module.exports = {
+  "env": {
+    "browser": true,
+    "es6": true,
+    "jest/globals": true
+  },
+  "extends": [
+    "eslint:recommended",
+    "plugin:react/recommended"
+  ],
+  "parserOptions": {
+    "ecmaFeatures": {
+      "jsx": true
+    },
+    "ecmaVersion": 2018,
+    "sourceType": "module"
+  },
+  "plugins": [
+    "react", "jest"
+  ],
+  "rules": {
+    "indent": [
+      "error",
+        2
+      ],
+    "linebreak-style": [
+      "error",
+      "unix"
+    ],
+    "quotes": [
+      "error",
+      "single"
+    ],
+    "semi": [
+      "error",
+      "never"
+    ],
+    "eqeqeq": "error",
+    "no-trailing-spaces": "error",
+    "object-curly-spacing": [
+      "error", "always"
+    ],
+    "arrow-spacing": [
+      "error", { "before": true, "after": true }
+    ],
+    "no-console": 0,
+    "react/prop-types": 0
+  }
+}

.eslintrc.json

@@ -6,6 +6,7 @@
   "scripts": {
     "start": "webpack-dev-server --open --mode development",
     "test": "jest",
+    "eslint": "eslint './**/*.{js,jsx}'",
     "build": "webpack --mode production"
   },
   "repository": {
@@ -28,6 +29,7 @@
     "babel-jest": "^25.5.1",
     "babel-loader": "^8.1.0",
     "eslint": "^6.8.0",
+    "eslint-plugin-jest": "^23.11.0",
     "eslint-plugin-react": "^7.19.0",
     "html-loader": "^1.1.0",
     "html-webpack-plugin": "^4.3.0",