different ways to fetch the graphql schema

local.js

const fs = require('fs');
const {
  buildClientSchema,
  introspectionQuery,
  printSchema,
} = require('graphql/utilities');
const path = require('path');

const schemaPath = path.join(__dirname, '../../data/schema');

const Schema = require('./../graphql/Schema.js');

fs.writeFileSync(
  `${schemaPath}.graphql`,
  printSchema(Schema, { commentDescriptions: true })
);
process.exit(0);

remote.js

const fetch = require('node-fetch');
const fs = require('fs');
const {
  buildClientSchema,
  introspectionQuery,
  printSchema,
} = require('graphql/utilities');
const path = require('path');

const schemaPath = path.join(__dirname, '../../data/schema');

const SERVER = 'http://localhost:4000/graphql';

// Save JSON of full schema introspection for Babel Relay Plugin to use
fetch(`${SERVER}`, {
  method: 'POST',
  headers: {
    Accept: 'application/json',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    query: introspectionQuery,
  }),
})
  .then(res => res.json())
  .then(schemaJSON => {
    fs.writeFileSync(`${schemaPath}.json`, JSON.stringify(schemaJSON, null, 2));

    // Save user readable type system shorthand of schema
    const graphQLSchema = buildClientSchema(schemaJSON.data);
    fs.writeFileSync(`${schemaPath}.graphql`, printSchema(graphQLSchema));
  })
  .catch(error => {
    console.error(error);
  });