image

added:

// NPM package name validation regex
const VALID_PACKAGE_NAME = /^(?:(?:@(?:[a-z0-9-(削除) ][a-z0-9-. (削除ここまで)])?/)?[a-z0-9-._~][a-z0-9-(削除) ]|[a-z0-9- (削除ここまで)])$/

// Function to sanitize package name
const sanitizePackageName = (name: string): string => {
return name
.toLowerCase()
.replace(/[^a-z0-9-~]/g, '-')
.replace(/^[._]/, '')
.replace(/^-+|-+$/g, '')
|| 'jstack-app'
}

and also added this validation:
// Handle "." input by using current directory name
if (value === ".") {
const currentDir = path.basename(process.cwd())
value = currentDir
}

 // Validate against npm package name rules
 if (!VALID_PACKAGE_NAME.test(value)) {
 const sanitized = sanitizePackageName(value)
 return `Invalid package name. Try: ${sanitized}`
 }