chore(deps): upgrade eslint to v8 (#143)

Author: alexrudd2

.eslintrc.js

@@ -1,14 +1,16 @@
 module.exports = {
   parser: '@typescript-eslint/parser',
+  plugins: ['@typescript-eslint'],
   extends: [
+    'eslint:recommended',
     'plugin:react/recommended',
     'plugin:@typescript-eslint/recommended',
   ],
   parserOptions: {
     ecmaVersion: 2018,
     sourceType: 'module',
-    project: './tsconfig.json',
   },
+  root: true,
   rules: {
     // Place to specify ESLint rules. Can be used to overwrite rules specified from the extended configs
     // e.g. "@typescript-eslint/explicit-function-return-type": "off",
@@ -27,4 +29,8 @@ module.exports = {
       version: 'detect',
     },
   },
+  ignorePatterns: [
+    '*.js',
+    '__tests__',
+  ],
 };