[bug] Importing a CSV with an empty field removes the header index entirely for that row

[tinybigideas]

Reproduction

Steps to reproduce:

1. Create CSV following the standard template
2. Make sure there's an empty field for one of the rows
3. Importing that CSV will simply remove the field from the row which misaligned the data with its headers

Expected Behaviour

Imported CSV data to match the index of the headers I.e. data[headerIndex] should be the relevant row data. However, it gets removed should the row be empty of undefined.

Environment

• Angular: 9.0.1
• Browser(s): All