Getting the column names before entering a for await loop

[obones]

Hello,

Could it be possible to have the information about columns before starting the for await of loop. Here is what I would like to do:

const parser = sourceStream.pipe(csv_parse({ columns: true, info: true }));
if (expectedColumnsAreFound(parser))
    for await (const {record, info} of parser)
    {
        // process records
    }

Of course, I could move the columns validity test inside the loop, but it would be tested for all records which is a waste of computation time in huge files.

[wdavidw]

I would set the columns to false, and handle it on my side. There is no current mechanism to handle this yet.

[wdavidw]

Summer cleanup. Closing for lack of activity.

[obones]

Well, the request is still valid, just that I have not enough knowledge to offer a code change for this feature...

[wdavidw]

I suggested to handle the feature in the application code. The feature might never be accepted in the parser. Note I could change my mind.