Function extractExactTarArchive

pkg/npm/install.js:93–108

(
  archivePath, destPath, expectedNames, targetName, runFile = execFileSync,
)

}

function extractExactTarArchive(
  archivePath, destPath, expectedNames, targetName, runFile = execFileSync,
) {
  const listing = runFile('tar', ['-tzf', archivePath], {
    encoding: 'utf8',
    maxBuffer: MAX_CHECKSUM_MANIFEST_BYTES,
    windowsHide: true,
  });
  validateExactTarMemberListing(listing, expectedNames);
  // Extract only the fixed root executable. Even a malformed tar implementation
  // cannot write an unvalidated companion member outside the private temp tree.
  runFile('tar', ['-xzf', archivePath, '-C', destPath, targetName], {
    stdio: 'inherit',
    windowsHide: true,
  });
}

function downloadHop(url, dest, maxBytes) {
  return new Promise((resolve, reject) => {