import fs from 'node:fs'
import path from 'node:path'
export function getBackupFile(file:string){
let i = 0
const extName = path.extname(file)
while(true){
const bakFile = file.replace(extName,`.bak.${i++}${extName}`)
if(!fs.existsSync(bakFile)){
return bakFile
}
}
}