text: import produce from 'immer';
  import VueApollo from 'vue-apollo';
  import getIssueStateQuery from '~/issues/show/queries/get_issue_state.query.graphql';
  import createDefaultClient from '~/lib/graphql';
  
  const resolvers = {
    Mutation: {
      updateIssueState: (_, { issueType = undefined, isDirty = false }, { cache }) => {
        const sourceData = cache.readQuery({ query: getIssueStateQuery });
        const data = produce(sourceData, (draftData) => {
          draftData.issueState = { issueType, isDirty };
        });
        cache.writeQuery({ query: getIssueStateQuery, data });
      },
    },
  };
  
  export const defaultClient = createDefaultClient(resolvers);
  
  export const apolloProvider = new VueApollo({
    defaultClient,
  });
  