use .eslintrc.js

Author: chenxsan

.eslintrc

@@ -0,0 +1,37 @@
+module.exports = {
+  root: true,
+  extends: 'eslint:recommended',
+  parser: '@babel/eslint-parser',
+  env: {
+    browser: true,
+    es6: true,
+    node: true,
+    jest: true,
+    'cypress/globals': true,
+  },
+  plugins: ['markdown', 'cypress'],
+  globals: {
+    __DEV__: true,
+  },
+  rules: {
+    'no-undef': 2,
+    'no-unreachable': 2,
+    'no-unused-vars': 0,
+    'no-console': 0,
+    semi: ['error', 'always'],
+    quotes: ['error', 'single'],
+  },
+  overrides: [
+    {
+      files: ['src/content/**/*.md'],
+      rules: {
+        indent: ['error', 2],
+        quotes: ['error', 'single'],
+        'no-undef': 0,
+        'no-constant-condition': 0,
+        'no-useless-escape': 0,
+        'no-dupe-keys': 0,
+      },
+    },
+  ],
+};