Function concatLeftChunk

src/dataClean.ts:35–41

* append data to buffer that is left form last chunk

(chunk: Buffer, runtime: ParseRuntime)

 *  append data to buffer that is left form last chunk
 */
function concatLeftChunk(chunk: Buffer, runtime: ParseRuntime): Buffer {
  if (runtime.csvLineBuffer && runtime.csvLineBuffer.length > 0) {
    return Buffer.concat([runtime.csvLineBuffer, chunk]);
  } else {
    return chunk;
  }
}
/**
 * check if utf8 chars being split, if does, stripe the bytes and add to left buffer.
 */