How to return a rejected promise to graphql?

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const { GraphQLObjectType, GraphQLString, GraphQLSchema } = require('graphql');

const UserType = new GraphQLObjectType({
  name: 'User',
  fields: () => ({
    name: { type: GraphQLString },
    email: { type: GraphQLString }
  })
});

const RootQuery = new GraphQLObjectType({
  name: 'RootQueryType',
  fields: {
    user: {
      type: UserType,
      resolve(parent, args) {
        // Simulating a rejected promise
        return new Promise((resolve, reject) => {
          setTimeout(() => {
            reject(new Error('User not found'));
          }, 1000);
        });
      }
    }
  }
});

const schema = new GraphQLSchema({
  query: RootQuery
});

module.exports = schema;