Function fileSha256

pkg/npm/install.js:214–228

(candidatePath)

}

function fileSha256(candidatePath) {
  const digest = crypto.createHash('sha256');
  const fd = fs.openSync(candidatePath, 'r');
  const buffer = Buffer.allocUnsafe(64 * 1024);
  try {
    for (;;) {
      const count = fs.readSync(fd, buffer, 0, buffer.length, null);
      if (count === 0) break;
      digest.update(buffer.subarray(0, count));
    }
  } finally {
    fs.closeSync(fd);
  }
  return digest.digest('hex');
}

function filesEqualSha256(leftPath, rightPath) {
  try {