Vencord/src/utils/proxyLazy.ts

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/*
* Vencord, a modification for Discord's desktop app
* Copyright (c) 2022 Vendicated and contributors
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
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import { makeLazy } from "./misc";
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const ProxyDummy = function () { };
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/**
* Wraps the result of {@see makeLazy} in a Proxy you can consume as if it wasn't lazy.
* On first property access, the lazy is evaluated
* @param factory lazy factory
* @returns Proxy
*
* Note that the example below exists already as an api, see {@link lazyWebpack}
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* @example const mod = proxyLazy(() => findByProps("blah")); console.log(mod.blah);
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*/
export function proxyLazy<T>(factory: () => T): T {
const lazy = makeLazy(factory);
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return new Proxy(ProxyDummy, {
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get: (_, prop) => lazy()[prop],
set: (_, prop, value) => lazy()[prop] = value,
has: (_, prop) => prop in lazy(),
apply: (_, $this, args) => (lazy() as Function).apply($this, args),
ownKeys: () => Reflect.ownKeys(lazy() as object),
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construct: (_, args) => Reflect.construct(lazy() as Function, args),
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deleteProperty: (_, prop) => delete lazy()[prop],
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defineProperty: (_, property, attributes) => !!Object.defineProperty(lazy(), property, attributes),
getPrototypeOf: () => Object.getPrototypeOf(lazy())
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}) as any as T;
}