express-graphql persisted query

persistedQuery.js

const express = require('express');
const bodyParser = require('body-parser');
const graphqlHTTP = require('express-graphql');

const app = express();
app.use(bodyParser.json());

async function getPersistedQueryMiddleware(req, res, next) {
  if (!req.body.id) {
    next();
    return;
  }
  
  // get query from database/file system/where ever it may be saved
  // should also cache to avoid multiple lookups
  const queryText = await loadQuery(req.body.id);
  
  req.body.query = queryText;
  next();
}

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

app.listen(4000);

Very simple approach