chore: add prettier

.eslintrc.js

@@ -0,0 +1,38 @@
+module.exports = {
+  env: {
+    commonjs: true,
+    es6: true,
+    node: true
+  },
+  extends: [
+    'eslint:recommended',
+    'prettier/@typescript-eslint',
+    'plugin:prettier/recommended'
+  ],
+  globals: {},
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    ecmaVersion: 6,
+    sourceType: 'module'
+  },
+  plugins: ['@typescript-eslint'],
+  rules: {
+    'prettier/prettier': 'warn',
+    'no-cond-assign': [2, 'except-parens'],
+    'no-unused-vars': 0,
+    '@typescript-eslint/no-unused-vars': 1,
+    'no-empty': [
+      'error',
+      {
+        allowEmptyCatch: true
+      }
+    ],
+    'prefer-const': [
+      'warn',
+      {
+        destructuring: 'all'
+      }
+    ],
+    'spaced-comment': 'warn'
+  }
+}