mirror of
https://github.com/Vendicated/Vencord.git
synced 2024-09-20 06:30:35 +00:00
Fix entry webpack modules not being patched
This commit is contained in:
Vendicated
parent
25f101602d
commit
e4701769a5
1 changed files with 189 additions and 163 deletions
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@ -53,174 +53,35 @@ if (window[WEBPACK_CHUNK]) {
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},
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},
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configurable: true
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configurable: true
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});
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});
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// wreq.m is the webpack module factory.
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// normally, this is populated via webpackGlobal.push, which we patch below.
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// However, Discord has their .m prepopulated.
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// Thus, we use this hack to immediately access their wreq.m and patch all already existing factories
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Object.defineProperty(Function.prototype, "m", {
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set(v: any) {
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// When using react devtools or other extensions, we may also catch their webpack here.
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// This ensures we actually got the right one
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if (new Error().stack?.includes("discord.com")) {
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logger.info("Found webpack module factory");
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patchFactories(v);
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delete (Function.prototype as any).m;
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}
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Object.defineProperty(this, "m", {
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value: v,
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configurable: true,
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});
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},
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configurable: true
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});
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}
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}
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function patchPush(webpackGlobal: any) {
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function patchPush(webpackGlobal: any) {
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function handlePush(chunk: any) {
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function handlePush(chunk: any) {
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try {
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try {
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const modules = chunk[1];
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patchFactories(chunk[1]);
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const { subscriptions, listeners } = Vencord.Webpack;
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const { patches } = Vencord.Plugins;
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for (const id in modules) {
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let mod = modules[id];
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// Discords Webpack chunks for some ungodly reason contain random
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// newlines. Cyn recommended this workaround and it seems to work fine,
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// however this could potentially break code, so if anything goes weird,
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// this is probably why.
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// Additionally, `[actual newline]` is one less char than "\n", so if Discord
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// ever targets newer browsers, the minifier could potentially use this trick and
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// cause issues.
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let code: string = mod.toString().replaceAll("\n", "");
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// a very small minority of modules use function() instead of arrow functions,
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// but, unnamed toplevel functions aren't valid. However 0, function() makes it a statement
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if (code.startsWith("function(")) {
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code = "0," + code;
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}
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const originalMod = mod;
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const patchedBy = new Set();
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const factory = modules[id] = function (module, exports, require) {
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try {
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mod(module, exports, require);
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} catch (err) {
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// Just rethrow discord errors
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if (mod === originalMod) throw err;
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logger.error("Error in patched chunk", err);
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return void originalMod(module, exports, require);
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}
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exports = module.exports;
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if (!exports) return;
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// There are (at the time of writing) 11 modules exporting the window
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// Make these non enumerable to improve webpack search performance
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if (exports === window) {
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Object.defineProperty(require.c, id, {
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value: require.c[id],
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enumerable: false,
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configurable: true,
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writable: true
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});
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return;
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}
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const numberId = Number(id);
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for (const callback of listeners) {
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try {
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callback(exports, numberId);
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} catch (err) {
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logger.error("Error in webpack listener", err);
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}
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}
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for (const [filter, callback] of subscriptions) {
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try {
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if (filter(exports)) {
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subscriptions.delete(filter);
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callback(exports, numberId);
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} else if (typeof exports === "object") {
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if (exports.default && filter(exports.default)) {
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subscriptions.delete(filter);
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callback(exports.default, numberId);
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}
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for (const nested in exports) if (nested.length <= 3) {
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if (exports[nested] && filter(exports[nested])) {
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subscriptions.delete(filter);
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callback(exports[nested], numberId);
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}
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}
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}
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} catch (err) {
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logger.error("Error while firing callback for webpack chunk", err);
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}
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}
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} as any as { toString: () => string, original: any, (...args: any[]): void; };
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// for some reason throws some error on which calling .toString() leads to infinite recursion
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// when you force load all chunks???
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try {
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factory.toString = () => mod.toString();
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factory.original = originalMod;
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} catch { }
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for (let i = 0; i < patches.length; i++) {
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const patch = patches[i];
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const executePatch = traceFunction(`patch by ${patch.plugin}`, (match: string | RegExp, replace: string) => code.replace(match, replace));
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if (patch.predicate && !patch.predicate()) continue;
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if (code.includes(patch.find)) {
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patchedBy.add(patch.plugin);
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// we change all patch.replacement to array in plugins/index
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for (const replacement of patch.replacement as PatchReplacement[]) {
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if (replacement.predicate && !replacement.predicate()) continue;
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const lastMod = mod;
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const lastCode = code;
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canonicalizeReplacement(replacement, patch.plugin);
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try {
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const newCode = executePatch(replacement.match, replacement.replace as string);
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if (newCode === code && !patch.noWarn) {
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(window.explosivePlugins ??= new Set<string>()).add(patch.plugin);
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logger.warn(`Patch by ${patch.plugin} had no effect (Module id is ${id}): ${replacement.match}`);
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if (IS_DEV) {
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logger.debug("Function Source:\n", code);
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}
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} else {
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code = newCode;
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mod = (0, eval)(`// Webpack Module ${id} - Patched by ${[...patchedBy].join(", ")}\n${newCode}\n//# sourceURL=WebpackModule${id}`);
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}
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} catch (err) {
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logger.error(`Patch by ${patch.plugin} errored (Module id is ${id}): ${replacement.match}\n`, err);
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if (IS_DEV) {
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const changeSize = code.length - lastCode.length;
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const match = lastCode.match(replacement.match)!;
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// Use 200 surrounding characters of context
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const start = Math.max(0, match.index! - 200);
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const end = Math.min(lastCode.length, match.index! + match[0].length + 200);
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// (changeSize may be negative)
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const endPatched = end + changeSize;
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const context = lastCode.slice(start, end);
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const patchedContext = code.slice(start, endPatched);
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// inline require to avoid including it in !IS_DEV builds
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const diff = (require("diff") as typeof import("diff")).diffWordsWithSpace(context, patchedContext);
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let fmt = "%c %s ";
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const elements = [] as string[];
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for (const d of diff) {
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const color = d.removed
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? "red"
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: d.added
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? "lime"
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: "grey";
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fmt += "%c%s";
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elements.push("color:" + color, d.value);
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}
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logger.errorCustomFmt(...Logger.makeTitle("white", "Before"), context);
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logger.errorCustomFmt(...Logger.makeTitle("white", "After"), patchedContext);
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const [titleFmt, ...titleElements] = Logger.makeTitle("white", "Diff");
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logger.errorCustomFmt(titleFmt + fmt, ...titleElements, ...elements);
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}
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code = lastCode;
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mod = lastMod;
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patchedBy.delete(patch.plugin);
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}
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}
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if (!patch.all) patches.splice(i--, 1);
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}
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}
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}
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} catch (err) {
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} catch (err) {
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logger.error("Error in handlePush", err);
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logger.error("Error in handlePush", err);
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}
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}
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@ -244,3 +105,168 @@ function patchPush(webpackGlobal: any) {
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configurable: true
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configurable: true
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});
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});
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}
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}
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function patchFactories(factories: Record<string | number, (module: { exports: any; }, exports: any, require: any) => void>) {
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const { subscriptions, listeners } = Vencord.Webpack;
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const { patches } = Vencord.Plugins;
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for (const id in factories) {
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let mod = factories[id];
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// Discords Webpack chunks for some ungodly reason contain random
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// newlines. Cyn recommended this workaround and it seems to work fine,
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// however this could potentially break code, so if anything goes weird,
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// this is probably why.
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// Additionally, `[actual newline]` is one less char than "\n", so if Discord
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// ever targets newer browsers, the minifier could potentially use this trick and
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// cause issues.
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let code: string = mod.toString().replaceAll("\n", "");
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// a very small minority of modules use function() instead of arrow functions,
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// but, unnamed toplevel functions aren't valid. However 0, function() makes it a statement
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if (code.startsWith("function(")) {
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code = "0," + code;
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}
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const originalMod = mod;
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const patchedBy = new Set();
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const factory = factories[id] = function (module, exports, require) {
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try {
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mod(module, exports, require);
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} catch (err) {
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// Just rethrow discord errors
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if (mod === originalMod) throw err;
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logger.error("Error in patched chunk", err);
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return void originalMod(module, exports, require);
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}
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exports = module.exports;
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if (!exports) return;
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// There are (at the time of writing) 11 modules exporting the window
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// Make these non enumerable to improve webpack search performance
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if (exports === window) {
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Object.defineProperty(require.c, id, {
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value: require.c[id],
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enumerable: false,
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configurable: true,
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writable: true
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});
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return;
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}
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const numberId = Number(id);
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for (const callback of listeners) {
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try {
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callback(exports, numberId);
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} catch (err) {
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logger.error("Error in webpack listener", err);
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}
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}
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for (const [filter, callback] of subscriptions) {
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try {
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if (filter(exports)) {
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subscriptions.delete(filter);
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callback(exports, numberId);
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} else if (typeof exports === "object") {
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if (exports.default && filter(exports.default)) {
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subscriptions.delete(filter);
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callback(exports.default, numberId);
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}
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for (const nested in exports) if (nested.length <= 3) {
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if (exports[nested] && filter(exports[nested])) {
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subscriptions.delete(filter);
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callback(exports[nested], numberId);
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}
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}
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}
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} catch (err) {
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logger.error("Error while firing callback for webpack chunk", err);
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}
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}
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} as any as { toString: () => string, original: any, (...args: any[]): void; };
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// for some reason throws some error on which calling .toString() leads to infinite recursion
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// when you force load all chunks???
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try {
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factory.toString = () => mod.toString();
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factory.original = originalMod;
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} catch { }
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for (let i = 0; i < patches.length; i++) {
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const patch = patches[i];
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const executePatch = traceFunction(`patch by ${patch.plugin}`, (match: string | RegExp, replace: string) => code.replace(match, replace));
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if (patch.predicate && !patch.predicate()) continue;
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if (code.includes(patch.find)) {
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patchedBy.add(patch.plugin);
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// we change all patch.replacement to array in plugins/index
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for (const replacement of patch.replacement as PatchReplacement[]) {
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if (replacement.predicate && !replacement.predicate()) continue;
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const lastMod = mod;
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const lastCode = code;
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canonicalizeReplacement(replacement, patch.plugin);
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try {
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const newCode = executePatch(replacement.match, replacement.replace as string);
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if (newCode === code && !patch.noWarn) {
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(window.explosivePlugins ??= new Set<string>()).add(patch.plugin);
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logger.warn(`Patch by ${patch.plugin} had no effect (Module id is ${id}): ${replacement.match}`);
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if (IS_DEV) {
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logger.debug("Function Source:\n", code);
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}
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} else {
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code = newCode;
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mod = (0, eval)(`// Webpack Module ${id} - Patched by ${[...patchedBy].join(", ")}\n${newCode}\n//# sourceURL=WebpackModule${id}`);
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}
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} catch (err) {
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logger.error(`Patch by ${patch.plugin} errored (Module id is ${id}): ${replacement.match}\n`, err);
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if (IS_DEV) {
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const changeSize = code.length - lastCode.length;
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const match = lastCode.match(replacement.match)!;
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// Use 200 surrounding characters of context
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const start = Math.max(0, match.index! - 200);
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const end = Math.min(lastCode.length, match.index! + match[0].length + 200);
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// (changeSize may be negative)
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const endPatched = end + changeSize;
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const context = lastCode.slice(start, end);
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const patchedContext = code.slice(start, endPatched);
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// inline require to avoid including it in !IS_DEV builds
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const diff = (require("diff") as typeof import("diff")).diffWordsWithSpace(context, patchedContext);
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let fmt = "%c %s ";
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const elements = [] as string[];
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for (const d of diff) {
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const color = d.removed
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? "red"
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: d.added
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? "lime"
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: "grey";
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fmt += "%c%s";
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elements.push("color:" + color, d.value);
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}
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logger.errorCustomFmt(...Logger.makeTitle("white", "Before"), context);
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logger.errorCustomFmt(...Logger.makeTitle("white", "After"), patchedContext);
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const [titleFmt, ...titleElements] = Logger.makeTitle("white", "Diff");
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logger.errorCustomFmt(titleFmt + fmt, ...titleElements, ...elements);
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}
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code = lastCode;
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mod = lastMod;
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patchedBy.delete(patch.plugin);
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}
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}
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if (!patch.all) patches.splice(i--, 1);
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}
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}
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}
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}
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