objects-to-csv | JavaScript objects into a CSV file | CSV Processing library

I'm using an API to retrieve data on some stocks and I would like to add a column named symbol with the query values but I'm getting an error SyntaxError: Unexpected token '[' in this.result.[i].push.... Is there any other way to do call the i-th element and pass the query data or is the syntax just wrong?

The rest of the code is just me saving the output as CSV file

This is the code:

I'm trying to save the data from stocks I'm gathering from an API using this line of code await yahooStockAPI.getHistoricalPrices(startDate, endDate, symbol, '1d'); and save it as an array named newData, however, I keep getting an empty array. If I do console.log(newData); I can see the ouput which is something like this (for each symbol that I have defined in the code)...

In my attempt to become a better developer I'm trying to refactor the below Node code into 2 (or even 3) separate functions.

The code simply takes in a file, parses some of the data, and rewrites the parsed data to another file.

So my question is, can the code below be broken down to 2 functions (one function to read and parse, the other to write)? Can it be broken down even further to 3 functions (one to read and parse, one to write, one that calls the other two)?

I have attempted to refactor the code into 2 functions but am not having any luck

Good morning. I am working in development with nodejs in local and I generate a .csv file Once generated, I save it in the local system directory using library 'objects-to-csv';

Through the function: