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fix css hot reload in route/layout files #2146

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madaxen86 wants to merge 2 commits into from
+16 −11
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fix css hot reload in route/layout files #2146

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57761de
fix css hot reload in route/layout files
madaxen86 May 20, 2026
054b7e8
fix - need to call reloadModule instead
madaxen86 May 20, 2026
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27 changes: 16 additions & 11 deletions packages/start/src/config/fs-routes/fs-watcher.ts
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Original file line number Diff line number Diff line change
@@ -1,9 +1,4 @@
import type {
EnvironmentModuleNode,
FSWatcher,
PluginOption,
ViteDevServer,
} from "vite";
import type { EnvironmentModuleNode, FSWatcher, PluginOption, ViteDevServer } from "vite";
import { VITE_ENVIRONMENTS } from "../constants.ts";
import { moduleId } from "./index.ts";
import type { BaseFileSystemRouter } from "./router.ts";
Expand Down Expand Up @@ -31,21 +26,31 @@ function createRoutesReloader(
return () => routes.removeEventListener("reload", handleRoutesReload);

function handleRoutesReload(): void {
const envName =
environment === "ssr" ? VITE_ENVIRONMENTS.server : VITE_ENVIRONMENTS.client;
const envName = environment === "ssr" ? VITE_ENVIRONMENTS.server : VITE_ENVIRONMENTS.client;
const devEnv = server.environments[envName];
if (!devEnv?.moduleGraph) return;

const mod: EnvironmentModuleNode | undefined =
devEnv.moduleGraph.getModuleById(moduleId);
const mod: EnvironmentModuleNode | undefined = devEnv.moduleGraph.getModuleById(moduleId);
if (mod) {
const seen = new Set<EnvironmentModuleNode>();
devEnv.moduleGraph.invalidateModule(mod, seen);
}

if (environment !== "ssr") {
if (mod) {
devEnv.reloadModule(mod);

const extensions = [".css", ".scss", ".sass.", ".less"];
for (const [file, mods] of devEnv.moduleGraph.fileToModulesMap) {
if (extensions.some(ext => file.endsWith(ext))) {
for (const cssModule of mods) {
if (cssModule) {
devEnv.reloadModule(cssModule);
}
}
}
}

} else if (devEnv.hot) {
devEnv.hot.send({ type: "full-reload" });
}
Expand Down
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