Add commit message sanitization and testing setup

- Introduced sanitizeCommitMessage function to clean commit messages by removing disallowed special characters while allowing Unicode characters numbers spaces and certain symbols.
- Updated index.js to use the

Author: ryota-murakami

index.js

@@ -8,6 +8,7 @@ import prompts from 'prompts'
 import { program } from 'commander'
 import fs from 'fs'
 import os from 'os'
+import { sanitizeCommitMessage } from './utils/sanitizeCommitMessage.js'
 
 let openai
 let model = 'gpt-4o' // Default model
@@ -101,20 +102,19 @@ const gptCommit = async () => {
   }
 
   const response = await openai.chat.completions.create(parameters)
-  console.log(response.choices[0].message.content)
-  const message = response.choices[0].message.content
-    .replace(/[^\w\s.:@<>/-]/gi, '')
-    .trim()
+
+  const message = response.choices[0].message.content.trim()
+  const sanitizedMessage = sanitizeCommitMessage(message)
 
   const confirm = await prompts({
     type: 'confirm',
     name: 'value',
-    message: `${message}.`,
+    message: `${sanitizedMessage}.`,
     initial: true,
   })
 
   if (confirm.value) {
-    execSync(`git commit -m "${message}"`) // escape double quart
+    execSync(`git commit -m "${sanitizedMessage}"`) // escape double quart
     console.log('Committed with the suggested message.')
   } else {
     console.log('Commit canceled.')

package.json

@@ -6,7 +6,8 @@
   "type": "module",
   "scripts": {
     "prepare": "husky",
-    "prettier": "prettier --ignore-unknown --write ."
+    "prettier": "prettier --ignore-unknown --write .",
+    "test": "vitest"
   },
   "repository": {
     "type": "git",
@@ -35,9 +36,14 @@
     "node": "22.15.0"
   },
   "devDependencies": {
+    "@vitest/coverage-v8": "3.1.2",
+    "@vitest/ui": "^3.1.2",
     "husky": "^9.1.7",
+    "jsdom": "^26.1.0",
     "lint-staged": "^15.5.1",
-    "prettier": "^3.5.3"
+    "prettier": "^3.5.3",
+    "vite": "^6.3.3",
+    "vitest": "^3.1.2"
   },
   "lint-staged": {
     "*": "prettier --ignore-unknown --write"