compare-file-sizes-node

compare-file-sizes.js

const getFileSize = async (file) => (await fs.stat(file)).size

const compareFileSizes = async (filepath1, filepath2, cb) => {
  try {
    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise#promise_concurrency
    const [fsize1, fsize2] = await Promise.all([
      getFileSize(filepath1),
      getFileSize(filepath2)
    ])
    cb(null, Math.sign(fsize1 - fsize2))
  } catch(e) {
    cb(e, null)
  }
}

export { compareFileSizes };