build: move zone.js to angular repo (#30962)

PR Close #30962

packages/zone.js/lib/browser/webapis-resize-observer.ts

@@ -0,0 +1,91 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+Zone.__load_patch('ResizeObserver', (global: any, Zone: any, api: _ZonePrivate) => {
+  const ResizeObserver = global['ResizeObserver'];
+  if (!ResizeObserver) {
+    return;
+  }
+
+  const resizeObserverSymbol = api.symbol('ResizeObserver');
+
+  api.patchMethod(global, 'ResizeObserver', (delegate: Function) => (self: any, args: any[]) => {
+    const callback = args.length > 0 ? args[0] : null;
+    if (callback) {
+      args[0] = function(entries: any, observer: any) {
+        const zones: {[zoneName: string]: any} = {};
+        const currZone = Zone.current;
+        for (let entry of entries) {
+          let zone = entry.target[resizeObserverSymbol];
+          if (!zone) {
+            zone = currZone;
+          }
+          let zoneEntriesInfo = zones[zone.name];
+          if (!zoneEntriesInfo) {
+            zones[zone.name] = zoneEntriesInfo = {entries: [], zone: zone};
+          }
+          zoneEntriesInfo.entries.push(entry);
+        }
+
+        Object.keys(zones).forEach(zoneName => {
+          const zoneEntriesInfo = zones[zoneName];
+          if (zoneEntriesInfo.zone !== Zone.current) {
+            zoneEntriesInfo.zone.run(
+                callback, this, [zoneEntriesInfo.entries, observer], 'ResizeObserver');
+          } else {
+            callback.call(this, zoneEntriesInfo.entries, observer);
+          }
+        });
+      };
+    }
+    return args.length > 0 ? new ResizeObserver(args[0]) : new ResizeObserver();
+  });
+
+  api.patchMethod(
+      ResizeObserver.prototype, 'observe', (delegate: Function) => (self: any, args: any[]) => {
+        const target = args.length > 0 ? args[0] : null;
+        if (!target) {
+          return delegate.apply(self, args);
+        }
+        let targets = self[resizeObserverSymbol];
+        if (!targets) {
+          targets = self[resizeObserverSymbol] = [];
+        }
+        targets.push(target);
+        target[resizeObserverSymbol] = Zone.current;
+        return delegate.apply(self, args);
+      });
+
+  api.patchMethod(
+      ResizeObserver.prototype, 'unobserve', (delegate: Function) => (self: any, args: any[]) => {
+        const target = args.length > 0 ? args[0] : null;
+        if (!target) {
+          return delegate.apply(self, args);
+        }
+        let targets = self[resizeObserverSymbol];
+        if (targets) {
+          for (let i = 0; i < targets.length; i++) {
+            if (targets[i] === target) {
+              targets.splice(i, 1);
+              break;
+            }
+          }
+        }
+        target[resizeObserverSymbol] = undefined;
+        return delegate.apply(self, args);
+      });
+
+  api.patchMethod(
+      ResizeObserver.prototype, 'disconnect', (delegate: Function) => (self: any, args: any[]) => {
+        const targets = self[resizeObserverSymbol];
+        if (targets) {
+          targets.forEach((target: any) => { target[resizeObserverSymbol] = undefined; });
+          self[resizeObserverSymbol] = undefined;
+        }
+        return delegate.apply(self, args);
+      });
+});