static create(
    writer,
    size = DEFAULT_BUF_SIZE,
  ) {
    return writer instanceof BufWriterSync
      ? writer
      : new BufWriterSync(writer, size);
  }
/** return new BufWriterSync unless writer is BufWriterSync */
return new BufWriterSync unless writer is BufWriterSync
return new BufWriterSync unless writer is BufWriterSync
static create(
    writer,
    size = DEFAULT_BUF_SIZE,
  ) {
    return writer instanceof BufWriterSync
      ? writer
      : new BufWriterSync(writer, size);
  }
static create ( writer , size = DEFAULT_BUF_SIZE , ) { return writer instanceof BufWriterSync ? writer : new BufWriterSync ( writer , size ) ; }
return new BufWriterSync unless writer is BufWriterSync
return new BufWriterSync unless writer is BufWriterSync