release: WRNexusJS 0.2.40

packages/dev-server/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@wrnexus/dev-server",
-  "version": "0.2.39",
+  "version": "0.2.40",
   "type": "module",
   "main": "src/index.ts",
   "exports": {

packages/dev-server/src/cache.ts

@@ -0,0 +1,36 @@
+import { existsSync, rmSync } from "node:fs";
+import { resolve } from "node:path";
+
+export interface ResetDevCacheOptions {
+  rootDir?: string;
+  cacheDir?: string;
+  enabled?: boolean;
+}
+
+export function resetDevCache(options: ResetDevCacheOptions = {}): string {
+  const rootDir = resolve(options.rootDir ?? process.cwd());
+
+  const cacheDir = resolve(rootDir, options.cacheDir ?? ".wrnexus");
+
+  if (options.enabled === false) {
+    return cacheDir;
+  }
+
+  // Safety: never allow deleting the project root.
+  if (cacheDir === rootDir) {
+    throw new Error("Refusing to remove the project root as the WRNexus cache directory.");
+  }
+
+  if (existsSync(cacheDir)) {
+    rmSync(cacheDir, {
+      recursive: true,
+      force: true,
+      maxRetries: 3,
+      retryDelay: 100,
+    });
+
+    console.log(`[wrnexus] cleared generated cache: ${cacheDir}`);
+  }
+
+  return cacheDir;
+}

packages/dev-server/src/index.ts

@@ -29,6 +29,7 @@ import { createDevAssetServer } from "./assets.ts";
 import { HmrHub } from "./hmr.ts";
 import { startWatcher } from "./watch.ts";
 export { RESTART_EXIT_CODE } from "./restart.ts";
+import { resetDevCache } from "./cache.ts";
 
 export interface ServeOptions {
   appDir: string;
@@ -122,6 +123,12 @@ export async function startServer(opts: ServeOptions): Promise<RunningServer> {
   const router = buildRouter(appDir, { componentDirs: [uiComponentsDir()] });
   const styleEntry = opts.styleEntry ?? null;
   const appRoot = dirname(appDir);
+
+  resetDevCache({
+    rootDir: appRoot,
+    enabled: process.env.WRNEXUS_PRESERVE_CACHE !== "1",
+  });
+
   // Compile every `.wrn` into ONE cache dir at the project root, instead of a
   // `.wrnexus/` next to each source file (and inside node_modules UI dirs).
   setCompileCacheDir(join(appRoot, ".wrnexus"));