add eslint

.editorconfig

@@ -0,0 +1,11 @@
+# editorconfig.org
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+tab_width = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true

.eslintrc.js

@@ -0,0 +1,51 @@
+module.exports = {
+  env: {
+    browser: true,
+    es2021: true,
+    jest: true,
+    node: true,
+  },
+  parser: '@typescript-eslint/parser',
+  plugins: ['react', '@typescript-eslint'],
+  parserOptions: {
+    ecmaFeatures: {
+      jsx: true,
+    },
+    ecmaVersion: 12,
+    sourceType: 'module',
+  },
+  extends: [
+    'eslint:recommended',
+    'plugin:react/recommended',
+    'plugin:@typescript-eslint/recommended',
+    'plugin:react-hooks/recommended',
+    // Uncomment the following lines to enable eslint-config-prettier
+    // Is not enabled right now to avoid issues with the Next.js repo
+    'prettier',
+  ],
+  settings: {
+    react: {
+      version: 'detect',
+    },
+  },
+  rules: {
+    'react/prop-types': 0,
+    'react/react-in-jsx-scope': 0,
+    '@typescript-eslint/explicit-function-return-type': 0,
+    '@typescript-eslint/explicit-member-accessibility': 0,
+    '@typescript-eslint/indent': 0,
+    '@typescript-eslint/member-delimiter-style': 0,
+    '@typescript-eslint/ban-ts-comment': 0,
+    '@typescript-eslint/no-explicit-any': 0,
+    '@typescript-eslint/no-var-requires': 0,
+    '@typescript-eslint/no-use-before-define': 0,
+    '@typescript-eslint/no-empty-function': 0,
+    '@typescript-eslint/no-unused-vars': [
+      2,
+      {
+        argsIgnorePattern: '^_',
+      },
+    ],
+    'no-console': 0,
+  },
+}

.gitignore

@@ -3,3 +3,4 @@ node_modules
 dist
 dist-ssr
 *.local
+.eslintcache

.prettierrc

@@ -0,0 +1,5 @@
+{
+  "singleQuote": true,
+  "semi": false,
+  "printWidth": 120
+}