How do i convert this code from Dataweave 1 to Dataweave 2 - mule-studio

Question

I have to convert some code from dataweave 1 to dataweave 2 but I'm not sure how to convert this patch of code. The answers I found online are confusing
I'm not sure if these two maps are syntaxed the right way, or the syntax for filtering then mapping. I know you have to convert flowVars to vars
flowVars.referenceDataResponse.resultSets filter $.schemaSequenceNumber == "TRESIDENCE_TYPE" map (resultSets,indexOfResultSets) -> {
(resultSets.resultSet map (resultSet,indexOfResultSet) -> {
residenceType:resultSet[indexOfResultSet].data
} )
}

Answer 1

You should really give more context, like inputs, expected output and the directives of the script but this is a literal translation, with output set to application/java because of lack of anything else:
%dw 2.0
output application/java
---
vars.referenceDataResponse.resultSets filter $.schemaSequenceNumber == "TRESIDENCE_TYPE" map (resultSets, indexOfResultSets) -> {
(resultSets.resultSet map (resultSet, indexOfResultSet) -> {
residenceType: resultSet[indexOfResultSet].data
})
}
No way to know if it works for you, given that there is no test data.

Answer 2

Alejandro,
I have Posted sample data, may help to test your suggested conversion solution and I have assumed resultSet is an object with two attribute. You may improve the data to cater your suggested solution
%dw 2.0
output application/json
var arr =
referenceDataResponse: {
resultSets :
[
{
id: 1,
schemaSequenceNumber :"TRESIDENCE_TYPE",
resultSet: [{residenceType: "one"},{residenceType: "two"},{residenceType: "three"}]
},
{
id: 2,
schemaSequenceNumber :"TRESIDENCE_TYPE2",
resultSet:[{residenceType: "one"},{residenceType: "two"},{residenceType: "three"}]
},
{
id: 3,
schemaSequenceNumber :"TRESIDENCE_TYPE3",
resultSet:[{residenceType: "one"},{residenceType: "two"},{residenceType: "three"}]
}
]
}
---
arr.referenceDataResponse.resultSets filter $.schemaSequenceNumber == "TRESIDENCE_TYPE" map (resultSets, indexOfResultSets) -> {
(resultSets.resultSet map (resultSet, indexOfResultSet) -> {
residenceType: resultSet.residenceType
})
}