Function makeChunk

packages/engine/src/utils/alphaBlit.test.ts:45–50

(type: string, data: Buffer)

}

function makeChunk(type: string, data: Buffer): Buffer {
  const typeBuffer = Buffer.from(type, "ascii");
  const crcInput = Buffer.concat([typeBuffer, data]);
  const crcBuf = uint32BE(crc32(crcInput));
  return Buffer.concat([uint32BE(data.length), typeBuffer, data, crcBuf]);
}

const PNG_SIG = Buffer.from([137, 80, 78, 71, 13, 10, 26, 10]);