Allow ESM note

Author: JoviDeCroock

website/pages/docs/getting-started.mdx

@@ -11,7 +11,8 @@ import { Tabs } from 'nextra/components';
 
 ## Prerequisites
 
-Before getting started, you should have Node v6 installed, although the examples should mostly work in previous versions of Node as well.
+Before getting started, you should have at least Node 20 installed, the examples can be tweaked to work with Node versions
+before that by switching to require syntax.
 For this guide, we won't use any language features that require transpilation, but we will use some ES6 features like
 [Promises](http://web.dev/articles/promises/), classes,
 and arrow functions, so if you aren't familiar with them you might want to read up on them first.

website/pages/docs/mutations-and-input-types.mdx

@@ -103,6 +103,7 @@ import {
   GraphQLInputObjectType,
   GraphQLNonNull,
 } from 'graphql';
+import { randomBytes } from 'node:crypto';
 
 // Maps username to content
 const fakeDatabase = {};
@@ -156,7 +157,6 @@ const schema = new GraphQLSchema({
         },
         resolve: (_, { input }) => {
           // Create a random id for our "database".
-          import { randomBytes } from 'crypto';
           const id = randomBytes(10).toString('hex');
           fakeDatabase[id] = input;
           return {