routie dev init since i didn't adhere to any proper guidance up until now

frontend/node_modules/eslint-plugin-perfectionist/dist/utils/validate-no-duplicated-groups.js

@@ -0,0 +1,24 @@
+import { computeGroupsNames } from './compute-groups-names.js'
+/**
+ * Throws an error if a group is specified more than once.
+ *
+ * @param parameters - Parameters object.
+ * @param parameters.groups - The groups to check for duplicates.
+ * @throws Error Will throw an error if duplicated groups are found.
+ */
+function validateNoDuplicatedGroups({ groups }) {
+  let groupNames = computeGroupsNames(groups)
+  let seenGroups = /* @__PURE__ */ new Set()
+  let duplicatedGroups = /* @__PURE__ */ new Set()
+  for (let groupName of groupNames) {
+    if (seenGroups.has(groupName)) {
+      duplicatedGroups.add(groupName)
+    } else {
+      seenGroups.add(groupName)
+    }
+  }
+  if (duplicatedGroups.size > 0) {
+    throw new Error(`Duplicated group(s): ${[...duplicatedGroups].join(', ')}`)
+  }
+}
+export { validateNoDuplicatedGroups }