wip(form): perf form

src/hooks/core/useAttrs.ts

@@ -0,0 +1,39 @@
+import { getCurrentInstance, reactive, shallowRef, watchEffect } from 'vue';
+
+interface Params {
+  excludeListeners?: boolean;
+  excludeKeys?: string[];
+}
+
+const DEFAULT_EXCLUDE_KEYS = ['class', 'style'];
+const LISTENER_PREFIX = /^on[A-Z]/;
+
+export function entries<T>(obj: Hash<T>): [string, T][] {
+  return Object.keys(obj).map((key: string) => [key, obj[key]]);
+}
+
+export function useAttrs(params: Params = {}) {
+  const instance = getCurrentInstance();
+  if (!instance) return {};
+
+  const { excludeListeners = false, excludeKeys = [] } = params;
+  const attrs = shallowRef({});
+  const allExcludeKeys = excludeKeys.concat(DEFAULT_EXCLUDE_KEYS);
+
+  // Since attrs are not reactive, make it reactive instead of doing in `onUpdated` hook for better performance
+  instance.attrs = reactive(instance.attrs);
+
+  watchEffect(() => {
+    const res = entries(instance.attrs).reduce((acm, [key, val]) => {
+      if (!allExcludeKeys.includes(key) && !(excludeListeners && LISTENER_PREFIX.test(key))) {
+        acm[key] = val;
+      }
+
+      return acm;
+    }, {} as Hash<any>);
+
+    attrs.value = res;
+  });
+
+  return attrs;
+}