Add DevCompanion plugin (https://github.com/Vencord/Companion)
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Vendicated
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src/plugins/devCompanion.dev.tsx
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src/plugins/devCompanion.dev.tsx
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/*
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* Vencord, a modification for Discord's desktop app
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* Copyright (c) 2023 Vendicated and contributors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import { addContextMenuPatch } from "@api/ContextMenu";
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import { showNotification } from "@api/Notifications";
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import { Devs } from "@utils/constants";
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import Logger from "@utils/Logger";
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import { canonicalizeMatch, canonicalizeReplace } from "@utils/patches";
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import definePlugin from "@utils/types";
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import { filters, findAll, search } from "@webpack";
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import { Menu } from "@webpack/common";
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const PORT = 8485;
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const NAV_ID = "dev-companion-reconnect";
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const logger = new Logger("DevCompanion");
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let socket: WebSocket | undefined;
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type Node = StringNode | RegexNode | FunctionNode;
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interface StringNode {
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type: "string";
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value: string;
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}
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interface RegexNode {
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type: "regex";
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value: {
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pattern: string;
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flags: string;
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};
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}
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interface FunctionNode {
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type: "function";
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value: string;
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}
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interface PatchData {
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find: string;
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replacement: {
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match: StringNode | RegexNode;
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replace: StringNode | FunctionNode;
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}[];
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}
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interface FindData {
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type: string;
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args: Array<StringNode | FunctionNode>;
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}
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function parseNode(node: Node) {
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switch (node.type) {
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case "string":
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return node.value;
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case "regex":
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return new RegExp(node.value.pattern, node.value.flags);
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case "function":
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// We LOVE remote code execution
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// Safety: This comes from localhost only, which actually means we have less permissions than the source,
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// since we're running in the browser sandbox, whereas the sender has host access
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return (0, eval)(node.value);
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default:
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throw new Error("Unknown Node Type " + (node as any).type);
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}
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}
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function initWs(isManual = false) {
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let wasConnected = isManual;
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let hasErrored = false;
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const ws = socket = new WebSocket(`ws://localhost:${PORT}`);
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ws.addEventListener("open", () => {
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wasConnected = true;
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logger.info("Connected to WebSocket");
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showNotification({
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title: "Dev Companion Connected",
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body: "Connected to WebSocket"
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});
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});
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ws.addEventListener("error", e => {
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if (!wasConnected) return;
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hasErrored = true;
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logger.error("Dev Companion Error:", e);
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showNotification({
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title: "Dev Companion Error",
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body: (e as ErrorEvent).message || "No Error Message",
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color: "var(--status-danger, red)"
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});
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});
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ws.addEventListener("close", e => {
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if (!wasConnected && !hasErrored) return;
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logger.info("Dev Companion Disconnected:", e.code, e.reason);
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showNotification({
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title: "Dev Companion Disconnected",
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body: e.reason || "No Reason provided",
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color: "var(--status-danger, red)"
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});
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});
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ws.addEventListener("message", e => {
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try {
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var { nonce, type, data } = JSON.parse(e.data);
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} catch (err) {
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logger.error("Invalid JSON:", err, "\n" + e.data);
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return;
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}
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function reply(error?: string) {
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const data = { nonce, ok: !error } as Record<string, unknown>;
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if (error) data.error = error;
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ws.send(JSON.stringify(data));
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}
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logger.info("Received Message:", type, "\n", data);
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switch (type) {
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case "testPatch": {
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const { find, replacement } = data as PatchData;
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const candidates = search(find);
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const keys = Object.keys(candidates);
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if (keys.length !== 1)
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return reply("Expected exactly one 'find' matches, found " + keys.length);
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let src = String(candidates[keys[0]]);
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let i = 0;
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for (const { match, replace } of replacement) {
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i++;
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try {
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const matcher = canonicalizeMatch(parseNode(match));
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const replacement = canonicalizeReplace(parseNode(replace), "PlaceHolderPluginName");
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const newSource = src.replace(matcher, replacement as string);
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if (src === newSource) throw "Had no effect";
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Function(newSource);
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src = newSource;
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} catch (err) {
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return reply(`Replacement ${i} failed: ${err}`);
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}
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}
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reply();
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break;
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}
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case "testFind": {
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const { type, args } = data as FindData;
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try {
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var parsedArgs = args.map(parseNode);
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} catch (err) {
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return reply("Failed to parse args: " + err);
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}
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try {
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let results: any[];
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switch (type.replace("find", "").replace("Lazy", "")) {
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case "":
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results = findAll(parsedArgs[0]);
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break;
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case "ByProps":
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results = findAll(filters.byProps(...parsedArgs));
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break;
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case "Store":
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results = findAll(filters.byStoreName(parsedArgs[0]));
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break;
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case "ByCode":
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results = findAll(filters.byCode(...parsedArgs));
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break;
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case "ModuleId":
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results = Object.keys(search(parsedArgs[0]));
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break;
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default:
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return reply("Unknown Find Type " + type);
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}
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if (results.length === 0) throw "No results";
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if (results.length > 1) throw "Found more than one result! Make this filter more specific";
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} catch (err) {
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return reply("Failed to find: " + err);
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}
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reply();
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break;
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}
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default:
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reply("Unknown Type " + type);
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break;
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}
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});
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}
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export default definePlugin({
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name: "DevCompanion",
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description: "Dev Companion Plugin",
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authors: [Devs.Ven],
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start() {
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initWs();
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addContextMenuPatch("user-settings-cog", kids => {
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if (kids.some(k => k?.props?.id === NAV_ID)) return;
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kids.unshift(
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<Menu.MenuItem
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id={NAV_ID}
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label="Reconnect Dev Companion"
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action={() => {
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socket?.close(1000, "Reconnecting");
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initWs(true);
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}}
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/>
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);
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});
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},
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stop() {
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socket?.close(1000, "Plugin Stopped");
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socket = void 0;
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}
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});
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