import fs from "fs"; for (const filename of fs.readdirSync( "./public/images/sequence/not-compressed" )) { const [file, ext] = filename.split("."); let newFilename = ""; if (file !== "0") { newFilename = `${Math.abs(Number(file) - 360)}.${ext}`; } else { newFilename = `0.${ext}`; } fs.copyFileSync( `./public/images/sequence/not-compressed/${filename}`, `./public/images/sequence/not-compressed-renamed/${newFilename}` ); }