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denoland-deno/extensions/web/04_global_interfaces.js
2021-04-30 15:51:48 -04:00

70 lines
1.6 KiB
JavaScript

// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
"use strict";
((window) => {
const { EventTarget } = window;
const illegalConstructorKey = Symbol("illegalConstructorKey");
class Window extends EventTarget {
constructor(key = null) {
if (key !== illegalConstructorKey) {
throw new TypeError("Illegal constructor.");
}
super();
}
get [Symbol.toStringTag]() {
return "Window";
}
}
class WorkerGlobalScope extends EventTarget {
constructor(key = null) {
if (key != illegalConstructorKey) {
throw new TypeError("Illegal constructor.");
}
super();
}
get [Symbol.toStringTag]() {
return "WorkerGlobalScope";
}
}
class DedicatedWorkerGlobalScope extends WorkerGlobalScope {
constructor(key = null) {
if (key != illegalConstructorKey) {
throw new TypeError("Illegal constructor.");
}
super();
}
get [Symbol.toStringTag]() {
return "DedicatedWorkerGlobalScope";
}
}
window.__bootstrap.globalInterfaces = {
DedicatedWorkerGlobalScope,
Window,
WorkerGlobalScope,
dedicatedWorkerGlobalScopeConstructorDescriptor: {
configurable: true,
enumerable: false,
value: DedicatedWorkerGlobalScope,
writable: true,
},
windowConstructorDescriptor: {
configurable: true,
enumerable: false,
value: Window,
writable: true,
},
workerGlobalScopeConstructorDescriptor: {
configurable: true,
enumerable: false,
value: WorkerGlobalScope,
writable: true,
},
};
})(this);