How to loop over an array within a map of a graphql?

@brandy 

To loop over an array within a map in a GraphQL query, you can use the map function to iterate over the array and return a new array with the elements transformed according to the logic defined in the function. Here's an example of how to loop over an array within a map in a GraphQL query:

Suppose you have a GraphQL query that retrieves a list of users and their emails, and you want to loop over the array of emails to transform them to lowercase. You can achieve this by using the map function within a query field in your GraphQL query:

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{
  users {
    name
    emails {
      lowercaseEmails: emails
        @map(
          mapper: "toLowerCase",
          args: { }
        )
    }
  }
}

In this example, the map directive is used on the emails field within the users query to transform each email in the array to lowercase. The mapper argument specifies the function toLowerCase to apply to each email, and the lowercaseEmails alias is used to store the transformed array.

You can replace the toLowerCase function with any custom logic you want to apply to each element of the array. This allows you to loop over and transform the elements of the array within a GraphQL query using the map function.