Fix memory leak in dev server

src/functions/server/full-rebuild.ts

@@ -3,6 +3,8 @@ import allPagesESBuildContextBundler from "../bundler/all-pages-esbuild-context-
 import serverPostBuildFn from "./server-post-build-fn";
 import { restartWatcher } from "./watcher-esbuild-ctx";
 import { logBuildErrorsOnce } from "../../utils/build-error-log";
+import disposeBundlerContexts from "../bundler/dispose-bundler-contexts";
+import isDevelopment from "../../utils/is-development";
 
 // Single-flight: error recovery paths (grab-page-component retries, the
 // watcher, post-build HMR pushes) all call fullRebuild, and each rebuild
@@ -42,19 +44,19 @@ async function doFullRebuild(params?: { msg?: string }) {
 
         global.BUNEXT_ROUTER.reload();
 
-        try {
-            await global.BUNEXT_BUNDLER_CTX?.dispose();
-            global.BUNEXT_BUNDLER_CTX = undefined;
-
-            await global.BUNEXT_SSR_BUNDLER_CTX?.dispose();
-            global.BUNEXT_SSR_BUNDLER_CTX = undefined;
-        } catch (error) {}
+        await disposeBundlerContexts();
 
         await allPagesESBuildContextBundler({
             post_build_fn: async (params) => {
                 await serverPostBuildFn(params);
             },
         });
+
+        // Production never rebuilds incrementally; don't keep esbuild's
+        // build state alive for the rest of the process.
+        if (!isDevelopment()) {
+            await disposeBundlerContexts();
+        }
     } catch (error: any) {
         logBuildErrorsOnce(
             [{ text: error?.message || String(error) }],