Nodejs 13 compat and eslint/prettier glob fix (#3149)

site/next.config.js

@@ -1,23 +0,0 @@
-const fs = require('fs')
-const path = require('path')
-
-module.exports = {
-  exportPathMap: async (defaultPathMap, config) => {
-    const { dir } = config
-    const examples = fs.readdirSync(path.resolve(dir, 'examples'))
-    const pages = {
-      '/': { page: '/' },
-    }
-
-    for (const file of examples) {
-      if (!file.endsWith('.js')) {
-        continue
-      }
-
-      const example = file.replace('.js', '')
-      pages[`/examples/${example}`] = { page: '/examples/[example]', example }
-    }
-
-    return pages
-  },
-}