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denoland-deno/cli/js/web/custom_event.ts
Kitson Kelly fc4819e1e0
refactor: Event and EventTarget implementations (#4707)
Refactors Event and EventTarget so that they better encapsulate their
non-public data as well as are more forward compatible with things like
DOM Nodes.

Moves `dom_types.ts` -> `dom_types.d.ts` which was always the intention,
it was a legacy of when we used to build the types from the code and the
limitations of the compiler.  There was a lot of cruft in `dom_types`
which shouldn't have been there, and mis-alignment to the DOM standards.
This generally has been eliminated, though we still have some minor
differences from the DOM (like the removal of some deprecated
methods/properties).

Adds `DOMException`.  Strictly it shouldn't inherit from `Error`, but
most browsers provide a stack trace when one is thrown, so the behaviour
in Deno actually better matches the browser.

`Event` still doesn't log to console like it does in the browser.  I
 wanted to get this raised and that could be an enhancement later on (it
 currently doesn't either).
2020-04-11 11:42:02 -04:00

28 lines
836 B
TypeScript

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import { EventImpl as Event } from "./event.ts";
import { requiredArguments } from "./util.ts";
// eslint-disable-next-line @typescript-eslint/no-explicit-any
export class CustomEventImpl<T = any> extends Event implements CustomEvent {
#detail: T;
constructor(type: string, eventInitDict: CustomEventInit<T> = {}) {
super(type, eventInitDict);
requiredArguments("CustomEvent", arguments.length, 1);
const { detail } = eventInitDict;
this.#detail = detail as T;
}
// eslint-disable-next-line @typescript-eslint/no-explicit-any
get detail(): T {
return this.#detail;
}
get [Symbol.toStringTag](): string {
return "CustomEvent";
}
}
Reflect.defineProperty(CustomEventImpl.prototype, "detail", {
enumerable: true,
});