feat: mutation observer wrapper

src/observer.ts

@@ -0,0 +1,17 @@
+const config: MutationObserverInit = { attributes: true, childList: true, subtree: true }
+
+/**
+ * Creates a mutation observer.
+ *
+ * @param selector the query selector for target nodes
+ * @param mutationCallback the event callback for mutations
+ * @returns a callback for unsubscribing from the events
+ */
+export function observe(
+    selector: string,
+    mutationCallback: (mutations: MutationRecord[]) => void
+): () => void {
+    const observer = new MutationObserver(mutationCallback)
+    observer.observe(document.querySelector(selector)!, config)
+    return () => observer.disconnect()
+}