Merge pull request #28152 from element-hq/t3chguy/remove-hmr

Remove broken HMR support

src/vector/devcss.ts

@@ -1,38 +0,0 @@
-/*
-Copyright 2024 New Vector Ltd.
-Copyright 2021 The Matrix.org Foundation C.I.C.
-
-SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
-Please see LICENSE files in the repository root for full details.
-*/
-
-/**
- * This code is removed on production builds.
- *
- * Webpack's `string-replace-loader` searches for the `use theming` string
- * in this specific file, and replaces it with CSS requires statements that
- * are specific to the themes we have enabled.
- *
- * Without this workaround, webpack would import the CSS of all themes, which
- * would defeat the purpose of hot-reloading since all themes would be compiled,
- * which would result in compilation times on the order of 30s, even on a
- * powerful machine.
- *
- * For more details, see webpack.config.js:184 (string-replace-loader)
- */
-if (process.env.NODE_ENV === "development") {
-    ("use theming");
-    /**
-     * Clean up old hot-module script injections as they hog up memory
-     * and anything other than the newest one is really not needed at all.
-     * We don't need to do it more frequently than every half a minute or so,
-     * but it's done to delay full page reload due to app slowness.
-     */
-    setInterval(() => {
-        const elements = Array.from(document.querySelectorAll("script[src*=hot-update]"));
-        if (elements.length > 1) {
-            const oldInjects = elements.slice(0, elements.length - 1);
-            oldInjects.forEach((e) => e.remove());
-        }
-    }, 1000);
-}

src/vector/index.ts

@@ -22,14 +22,6 @@ import "./modernizr";
 // in webpack.config.js
 require("katex/dist/katex.css");
 
-/**
- * This require is necessary only for purposes of CSS hot-reload, as otherwise
- * webpack has some incredible problems figuring out which CSS files should be
- * hot-reloaded, even with proper hints for the loader.
- *
- * On production build it's going to be an empty module, so don't worry about that.
- */
-require("./devcss");
 require("./localstorage-fix");
 
 async function settled(...promises: Array<Promise<any>>): Promise<void> {