apollo_client_mutation_resolver_example_2.tsx

const fragment = gql`
  ${ISSUE_PARTS}

  fragment BasicIssueParts on BasicIssue {
    ... on Node {
      id
    }
    parameters {
      id
      value
    }
  }
`;

export const reducer = (issue: IssueParts, input: UpdateIssueNameInput): IssueParts => ({
  ...issue,
  name: input.name
});

export default createResolver(
  reducer,
  fragment,
  'IssueParts',
  (input: UpdateIssueNameInput) => {
    return input.id;
  },
);