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Check CustomEvent
constructor params (#2011)
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@ -1,7 +1,7 @@
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// Copyright 2018 the Deno authors. All rights reserved. MIT license.
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import * as domTypes from "./dom_types";
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import * as event from "./event";
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import { getPrivateValue } from "./util";
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import { getPrivateValue, requiredArguments } from "./util";
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// WeakMaps are recommended for private attributes (see MDN link below)
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// https://developer.mozilla.org/en-US/docs/Archive/Add-ons/Add-on_SDK/Guides/Contributor_s_Guide/Private_Properties#Using_WeakMaps
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@ -28,6 +28,7 @@ export class CustomEvent extends event.Event implements domTypes.CustomEvent {
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type: string,
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customEventInitDict: domTypes.CustomEventInit = {}
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) {
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requiredArguments("CustomEvent", arguments.length, 1);
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super(type, customEventInitDict);
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const { detail = null } = customEventInitDict;
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customEventAttributes.set(this, { detail });
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