[Bug]: Object array data source causes spliceRow call error: rowData.slice is not a function

[watchingfun]

Describe the bug

When using a two-dimensional array, spliceRow is called normally, but when using an object array, an error is reported.

Is it true that spliceRow cannot be used when using object arrays? I see no explanation in the documentation.

Video/Screenshots

Provide a link to the demo with the bug reproduction

https://jsfiddle.net/qkhrdbo1/

Handsontable version

handsontable@14.3

Framework version

No response

Your environment

chrome

[AMBudnik]

Hi @watchingfun

The spliceRow(), as mentioned in the documentation at https://handsontable.com/docs/react-data-grid/api/core/#splicerow, is made for arrays (not objects).

Underneath it calls thepopulateFromArray method https://github.com/handsontable/handsontable/blob/56d54d6e98da2b4d376829cb4077f4dea7b4a131/handsontable/src/dataMap/dataMap.js#L690C14-L690C31

so to add columns with data you'd need to alter the data object or change the columns settings and then add data, for example with the setDataAtCell() or setDataAtRowProp.

[watchingfun]

Thank you for your answer. The problem was caused by my misunderstanding of the documentation, so I could add new rows via hot.alter('insert_row', hot.countRows()); and then set the row data via setDataAtRowProp