Octokit plugin that will generate warnings when accessing GitHub REST APIs that are not available on a given GitHub Enterprise Server version

npm i octokit-plugin-ghes-warnings

// Configure Octokit to use the plugin
const Octokit = require('@octokit/rest')
  .plugin([
    require('octokit-plugin-ghes-warnings'),
  ])

See the included demo.js for a demonstration of the plugin.