Mocking GraphQL with express-graphql

mockserver-express-graphql.js

const express = require('express')
const graphqlHTTP = require('express-graphql')

const { buildSchema } = require('graphql')
const { addMockFunctionsToSchema } = require('graphql-tools')

const app = express()

const schema = buildSchema(`
  ...your schema here...
`)

const mocks = {
  // ...your mocks here...
}

addMockFunctionsToSchema({
  schema, 
  mocks, 
})

app.use('/graphql', graphqlHTTP({
  schema: builtSchema,
  graphiql: true,
}))

app.listen(4000)

Could you give an example on how to initialize the mocks object?