/**
  * Parse the content using the model's delimiter.
  *
  * #### Notes
  * This method will always return parsed content that has at most the display
  * limit worth of rows, currently maxing out at 1000 rows.
  */
 parse(): dsv.DSVParsedArray<dsv.DSVRowString> {
   let output = dsv.dsvFormat(this._delimiter).parse(this._content);
   let available = output.length;
   let maximum = DISPLAY_LIMIT;
   if (available > maximum) {
     // Mutate the array instead of slicing in order to conserve memory.
     output.splice(maximum);
     this.maxExceeded.emit({ available, maximum });
   }
   return output;
 }

str = d3Dsv.tsvFormatRows(parseRowsMappedArray.map((d) => [
    d.year ? d.year.getFullYear().toString() : '',
    d.make,
    d.model,
    d.length.toString()
]));

// ------------------------------------------------------------------------------------------
// Test DSV Generalized Parsers and Formatters
// ------------------------------------------------------------------------------------------

// Create custom-delimited Parser/Formatter =================================================

let dsv: d3Dsv.DSV;
dsv = d3Dsv.dsvFormat('|');

// parse(...) ============================================================================

// without row mapper -----------------------------------------------------------------------

parseArray = dsv.parse(pipedTestStringWithHeader);
rowArrayHeader = dsv.parse<Headers>(csvTestStringWithHeader);

// with row mapper ---------------------------------------------------------------------------

parseMappedArray = dsv.parse(pipedTestStringWithHeader, (rawRow, index, columns) => {
    const rr: d3Dsv.DSVRowString = rawRow;
    const i: number = index;
    const c: string[] = columns;
    const d: number | null = rr.Year ? +rr.Year! : null;