mule4 dataweave 2.0 write csv file with only headers

Question

In dataweave2.0 if payload is empty it should print only headers with pipe seperated. i have tried below code:

%dw 2.0
output application/csv separator='|', header=true
---
[{
      field1: "",
      field1: ""

}]

Output:
field1|field2|field3
|||

Desired output is only headers:
field1|field2|field3

Please guide

Answer 1

%dw 2.0

output application/csv separator='|', header=false

[{ field1: "field1", field2: "field2"

}]

Try this it may works for you...