I am writing a resolve for an object defined via Graphql. Despite the response returned from a query being correct, typescript keeps giving this error

 Types of property 'code' are incompatible.
                Type 'string' is not assignable to type GraphQLCode.

Here is how i am trying to populate the data to be resolved by the resolver

const myArray: {
      code: string;
      ...other fields
    }[] = [];

myArray.push({
        code: codeMapper[code as keyof typeof codeMapper],
        ...other fields
      });

Here is my graphQL type

enum GraphQLCode {
  SOME_VALUES
}