Format with Prettier

.eslintrc.json

@@ -1,12 +1,12 @@
 {
-  "env": {
-      "browser": true,
-      "es6": true,
-      "node": true
-  },
-  "extends": "eslint:recommended",
+  "extends": ["eslint:recommended", "prettier"],
   "parserOptions": {
-      "ecmaVersion": 2018,
-      "sourceType": "module"
+    "ecmaVersion": 2021
+  },
+  "plugins": ["jest"],
+  "env": {
+    "node": true,
+    "jest": true,
+    "es6": true
   }
 }

.github/workflows/ci.yml

@@ -2,9 +2,9 @@ name: CI
 
 on:
   push:
-    branches: [ main ]
+    branches: [main]
   pull_request:
-    branches: [ main ]
+    branches: [main]
 
 jobs:
   lint:
@@ -26,7 +26,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: ['16', '18', '20']
+        node-version: ["16", "18", "20"]
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code

.husky/pre-commit

@@ -0,0 +1,4 @@
+#!/usr/bin/env sh
+. "$(dirname -- "$0")/_/husky.sh"
+
+npx lint-staged

.prettierrc

@@ -0,0 +1,5 @@
+overrides:
+  - files: "*.js"
+    options:
+      singleQuote: true
+      semi: false

babel.config.js

@@ -1,5 +1,3 @@
 module.exports = {
-  presets: [
-    ['@babel/preset-env', { targets: { node: 'current' } }],
-  ],
-};
+  presets: [['@babel/preset-env', { targets: { node: 'current' } }]],
+}