How to use the apollo-server-lambda.graphiqlLambda function in apollo-server-lambda

const { graphqlLambda, graphiqlLambda } = require('apollo-server-lambda');
const myGraphQLSchema = require('./graphql/schema');

const graphqlHandler = graphqlLambda({ schema: myGraphQLSchema });
 
const graphiqlHandler = graphiqlLambda({ endpointURL: 'http://localhost:3000/graphql' });

module.exports = {
  graphqlHandler,
  graphiqlHandler
};


// Avoid CORS problem when using Angular Apollo Client for example
/* const graphqlHandler = (event, context, callback) => {
  const callbackFilter = (error, output) => {
    output.headers['Access-Control-Allow-Origin'] = '*';
    callback(error, output);
  };

  const handler = graphqlLambda({ schema: myGraphQLSchema });

logger: console,
});

exports.graphqlHandler = function graphqlHandler(event, context, callback) {
  function callbackFilter(error, output) {
    // eslint-disable-next-line no-param-reassign
    output.headers['Access-Control-Allow-Origin'] = '*';
    callback(error, output);
  }

  const handler = graphqlLambda({ schema: myGraphQLSchema });
  return handler(event, context, callbackFilter);
};

// for local endpointURL is /graphql and for prod it is /stage/graphql
exports.graphiqlHandler = graphiqlLambda({
  endpointURL: process.env.REACT_APP_GRAPHQL_ENDPOINT
    ? process.env.REACT_APP_GRAPHQL_ENDPOINT
    : '/production/graphql',
});

// for local endpointURL is /graphql and for prod it is /stage/graphql
exports.playgroundHandler = lambdaPlayground({
  endpoint: process.env.REACT_APP_GRAPHQL_ENDPOINT
    ? process.env.REACT_APP_GRAPHQL_ENDPOINT
    : '/production/graphql',
});

const { graphiqlLambda } = require('apollo-server-lambda');

exports.run = graphiqlLambda({
  endpointURL: '/dev/graphql',
});