How to get empty string when the cell is empty and sits at the last column

Discussed in https://github.com/exceljs/exceljs/discussions/1921

<div type='discussions-op-text'>

^{Originally posted by kmorte December 3, 2021} Hi

I’m trying to build a json object per row. But rows with an empty cell as the last onw don’t get parsed be the library and then values don’t match with headers.

Thanks.

const book = new ExcelJS.stream.xlsx.WorkbookReader(fileRoute, {
        sharedStrings: 'cache',
        hyperlinks: 'emit',
        worksheets: 'emit',
        entries: 'emit'
    });
for await (const sheet of book) {

        const headers = {};
        const values = {};
        for await (const row of sheet) {

            const model = row.model;
            const cells = model.cells;

            if(model.number === 1) {
                cells.forEach((c, i)=> {

                    headers[i] = c.value;
                });
            };

            if(model.number !== 1) {
                cells.forEach((c, i)=> {

                     // if the last cell is empty, it does not appear here

                    values[i] = c.value;
                });
            };

            const item = {};
            Object.keys(headers).forEach(h=> {

                Object.keys(values).forEach(v => {

                    if(h === v) {
                        item[headers[h]] = values[v]

                    };
                });
            });

            // console.log('item ', item );

        };

    };
```</div>

[skypesky]

@kmorte

i && headers.push(c.value)

Equivalent to

if(i) {
  headers.push(c.value)
}

Equivalent to

if(i > 0) {
  headers.push(c.value)
}

[skypesky]

Is the result of the following code running what you expect?

    for await (const sheet of book) {

      const headers = [];

      for await (const row of sheet) {

        const values = [];
        const model = row.model;

        if (model.number === 1) {
          row.eachCell({includeEmpty: true}, (c, i) => {
            i && headers.push(c.value);
          });
        };

        if (model.number > 1) {
          row.eachCell({includeEmpty: true}, (c, i) => {
            i && values.push(c.value);
          });
        };

        const item = {};

        for (let i = 0; i < headers.length; ++i) {
          item[headers[i]] = values[i];
        }

        console.log(headers, values, item);

      };

    };