[BUG] readable stream part of CsvFormatterStream is in objectMode

[AdriVanHoudt]

Describe the bug
The whole CsvFormatterStream is set in objectMode while this is only used for the writable part and not the readable part.

Atm this breaks for me as I can't pass CsvFormatterStream to hapi as it doesn't allow me pass a stream in objectMode (https://hapi.dev/api/?v=19.0.5#lifecycle-methods)

Parsing or Formatting?

• Formatting
• Parsing

To Reproduce
Atm I'm solving it like this: https://github.com/Salesflare/hapi-csv/blob/cors-and-lifecycle-fix/lib/index.js#L118
Which is forcing the readableStream off objectMode, which seems to work fine.
I also can't pass formatterOptions.objectMode as false as it will set the writable stream off of objectMode as well.

Expected behavior
It doesn't set the readable stream in object mode (or at least has a config for this)

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: [e.g. MacOS] macOS
• OS Version [e.g. Mojave] 10.15.2 Catalina
• Node Version [e.g. 10.16.0] 12.14.0

Additional context
Add any other context about the problem here.

[kanongil]

I expect this can be fixed by changing

fast-csv/packages/format/src/CsvFormatterStream.ts

Line 14 in 205cb22

super({ objectMode: formatterOptions.objectMode });

to

super({ writableObjectMode: formatterOptions.objectMode });

[doug-martin]

@kanongil Thank you for the including the fix!

The is will be included in v4.0.3

[doug-martin]

published!