mirror of
https://github.com/angular/angular
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0f298a13db
Zone.js supports the google closure compiler in the advance optimization mode, to prevent closure compiler modify the `onProperty` name such as `Element.prototype.onclick`, Zone.js implements the `onProperty` patch logic by declaring all the event names in the source code, this increases the bundle size and also require updating the event names array to keep the information updated. Now google closure compiler has the required event names defined in the built-in externs files, so zone.js can use more simple implementation and decrease the bundle size of zone.js (about 4k). PR Close #40962
64 lines
2.8 KiB
TypeScript
64 lines
2.8 KiB
TypeScript
/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {globalSources, patchEventPrototype, patchEventTarget, zoneSymbolEventNames} from '../common/events';
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import {ADD_EVENT_LISTENER_STR, ArraySlice, attachOriginToPatched, bindArguments, FALSE_STR, isBrowser, isIEOrEdge, isMix, isNode, ObjectCreate, ObjectDefineProperty, ObjectGetOwnPropertyDescriptor, patchClass, patchMacroTask, patchMethod, patchOnProperties, REMOVE_EVENT_LISTENER_STR, TRUE_STR, wrapWithCurrentZone, ZONE_SYMBOL_PREFIX} from '../common/utils';
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import {patchCallbacks} from './browser-util';
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import {filterProperties, getOnEventNames} from './property-descriptor';
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Zone.__load_patch('util', (global: any, Zone: ZoneType, api: _ZonePrivate) => {
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// Collect native event names by looking at properties
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// on the global namespace, e.g. 'onclick'.
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const eventNames: string[] = getOnEventNames(global);
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api.patchOnProperties = patchOnProperties;
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api.patchMethod = patchMethod;
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api.bindArguments = bindArguments;
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api.patchMacroTask = patchMacroTask;
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// In earlier version of zone.js (<0.9.0), we use env name `__zone_symbol__BLACK_LISTED_EVENTS` to
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// define which events will not be patched by `Zone.js`.
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// In newer version (>=0.9.0), we change the env name to `__zone_symbol__UNPATCHED_EVENTS` to keep
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// the name consistent with angular repo.
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// The `__zone_symbol__BLACK_LISTED_EVENTS` is deprecated, but it is still be supported for
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// backwards compatibility.
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const SYMBOL_BLACK_LISTED_EVENTS = Zone.__symbol__('BLACK_LISTED_EVENTS');
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const SYMBOL_UNPATCHED_EVENTS = Zone.__symbol__('UNPATCHED_EVENTS');
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if (global[SYMBOL_UNPATCHED_EVENTS]) {
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global[SYMBOL_BLACK_LISTED_EVENTS] = global[SYMBOL_UNPATCHED_EVENTS];
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}
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if (global[SYMBOL_BLACK_LISTED_EVENTS]) {
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(Zone as any)[SYMBOL_BLACK_LISTED_EVENTS] = (Zone as any)[SYMBOL_UNPATCHED_EVENTS] =
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global[SYMBOL_BLACK_LISTED_EVENTS];
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}
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api.patchEventPrototype = patchEventPrototype;
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api.patchEventTarget = patchEventTarget;
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api.isIEOrEdge = isIEOrEdge;
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api.ObjectDefineProperty = ObjectDefineProperty;
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api.ObjectGetOwnPropertyDescriptor = ObjectGetOwnPropertyDescriptor;
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api.ObjectCreate = ObjectCreate;
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api.ArraySlice = ArraySlice;
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api.patchClass = patchClass;
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api.wrapWithCurrentZone = wrapWithCurrentZone;
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api.filterProperties = filterProperties;
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api.attachOriginToPatched = attachOriginToPatched;
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api._redefineProperty = Object.defineProperty;
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api.patchCallbacks = patchCallbacks;
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api.getGlobalObjects = () => ({
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globalSources,
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zoneSymbolEventNames,
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eventNames,
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isBrowser,
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isMix,
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isNode,
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TRUE_STR,
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FALSE_STR,
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ZONE_SYMBOL_PREFIX,
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ADD_EVENT_LISTENER_STR,
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REMOVE_EVENT_LISTENER_STR
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});
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});
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