Refactor app orchestrator into Application with dependency injection

js/utils/pointer.js

@@ -0,0 +1,27 @@
+// js/utils/pointer.js
+
+export function pointerArrayToKey(pointer) {
+  if (!Array.isArray(pointer) || pointer.length < 2) {
+    return "";
+  }
+
+  const type = pointer[0] === "a" ? "a" : pointer[0] === "e" ? "e" : "";
+  if (!type) {
+    return "";
+  }
+
+  const value =
+    typeof pointer[1] === "string" ? pointer[1].trim().toLowerCase() : "";
+  if (!value) {
+    return "";
+  }
+
+  const relay =
+    pointer.length > 2 && typeof pointer[2] === "string"
+      ? pointer[2].trim()
+      : "";
+
+  return relay ? `${type}:${value}:${relay}` : `${type}:${value}`;
+}
+
+export default pointerArrayToKey;