Function readFilePrefix

src/util/agent/fsOperations.ts:172–184

(filePath: string, maxBytes: number)

}

async function readFilePrefix(filePath: string, maxBytes: number): Promise<string> {
  const handle = await fs.open(filePath, 'r');

  try {
    const buffer = Buffer.alloc(maxBytes);
    const { bytesRead } = await handle.read(buffer, 0, maxBytes, 0);
    // Decode only the bounded prefix and drop any incomplete trailing code point.
    const decoder = new StringDecoder('utf8');
    return decoder.write(buffer.subarray(0, bytesRead));
  } finally {
    await handle.close();
  }
}