Added precommit hook and staged checking of linting and formatting

.husky/pre-commit

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

.lintstagedrc.json

@@ -0,0 +1,6 @@
+{
+  "*.js": [
+    "npx eslint --fix",
+    "npx prettier --write"
+  ]
+}

package.json

@@ -11,7 +11,8 @@
     "scripts": {
         "start": "node main.js",
         "oputil": "node ./oputil.js",
-        "pretty": "npx prettier --write ."
+        "pretty": "npx prettier --write .",
+        "prepare": "husky install"
     },
     "repository": {
         "type": "git",
@@ -72,6 +73,8 @@
     "devDependencies": {
         "eslint": "8.31.0",
         "eslint-config-prettier": "^8.5.0",
+        "husky": "^8.0.0",
+        "lint-staged": "^13.1.0",
         "prettier": "2.8.1"
     },
     "engines": {