'use strict';
/**
 * @license Angular v<unknown>
 * (c) 2010-2024 Google LLC. https://angular.io/
 * License: MIT
 */
(function (factory) {
    typeof define === 'function' && define.amd ? define(factory) :
        factory();
})((function () {
    'use strict';
    function patchResizeObserver(Zone) {
        Zone.__load_patch('ResizeObserver', function (global, Zone, api) {
            var ResizeObserver = global['ResizeObserver'];
            if (!ResizeObserver) {
                return;
            }
            var resizeObserverSymbol = api.symbol('ResizeObserver');
            api.patchMethod(global, 'ResizeObserver', function (delegate) { return function (self, args) {
                var callback = args.length > 0 ? args[0] : null;
                if (callback) {
                    args[0] = function (entries, observer) {
                        var _this = this;
                        var zones = {};
                        var currZone = Zone.current;
                        for (var _i = 0, entries_1 = entries; _i < entries_1.length; _i++) {
                            var entry = entries_1[_i];
                            var zone = entry.target[resizeObserverSymbol];
                            if (!zone) {
                                zone = currZone;
                            }
                            var zoneEntriesInfo = zones[zone.name];
                            if (!zoneEntriesInfo) {
                                zones[zone.name] = zoneEntriesInfo = { entries: [], zone: zone };
                            }
                            zoneEntriesInfo.entries.push(entry);
                        }
                        Object.keys(zones).forEach(function (zoneName) {
                            var 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', function (delegate) { return function (self, args) {
                var target = args.length > 0 ? args[0] : null;
                if (!target) {
                    return delegate.apply(self, args);
                }
                var 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', function (delegate) { return function (self, args) {
                var target = args.length > 0 ? args[0] : null;
                if (!target) {
                    return delegate.apply(self, args);
                }
                var targets = self[resizeObserverSymbol];
                if (targets) {
                    for (var 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', function (delegate) { return function (self, args) {
                var targets = self[resizeObserverSymbol];
                if (targets) {
                    targets.forEach(function (target) {
                        target[resizeObserverSymbol] = undefined;
                    });
                    self[resizeObserverSymbol] = undefined;
                }
                return delegate.apply(self, args);
            }; });
        });
    }
    patchResizeObserver(Zone);
}));