Simple script to flatten out all the values

data/flatten.js

@@ -0,0 +1,42 @@
+// eslint-disable-next-line import/no-extraneous-dependencies
+const got = require('got');
+const flatten = require('lodash/flatten');
+
+const client = got.extend({
+  json: true,
+  baseUrl: 'https://4kmaps.now.sh',
+  hooks: {
+    afterResponse: [
+      (response, retryWithMergedOptions) => {
+        if (response.statusCode >= 400 && response.statusCode !== 404) { // Unauthorized
+          return retryWithMergedOptions({});
+        }
+
+        if (response.statusCode === 404) {
+          return false;
+        }
+
+        // No changes otherwise
+        return response;
+      },
+    ],
+  },
+});
+
+async function query(regionPath) {
+  const data = await client(`${regionPath}`);
+
+  if (!data) {
+    return [];
+  }
+
+  if (data.body.children.length === 0) {
+    return [data.body.regionKey];
+  }
+
+  const results = await Promise.all(data.body.children.map(c => query(c.href)));
+  return flatten(results);
+}
+
+// eslint-disable-next-line no-console
+query(`/regions/${process.argv[2]}`).then(console.log).catch(console.error);

package.json

@@ -39,6 +39,7 @@
     "eslint-config-airbnb-base": "^13.0.0",
     "eslint-plugin-import": "^2.13.0",
     "eslint-plugin-node": "^7.0.1",
+    "got": "^9.3.2",
     "mocha": "^5.2.0",
     "nodemon": "^1.18.3",
     "rewire": "^4.0.1",