NathanWalker · Oct 21, 2026 · Oct 15, 2026 · Oct 15, 2026
diff --git a/packages/vite/configuration/base.ts b/packages/vite/configuration/base.ts
@@ -45,6 +45,7 @@ import { normalizeModuleId } from '../helpers/normalize-id.js';
 import { getHmrWatchIgnoreGlobs } from '../helpers/hmr-scope.js';
 import { NS_OPTIMIZE_DEPS_EXCLUDE } from '../helpers/optimize-deps.js';
 import { sbgClassNamesPlugin } from '../helpers/sbg-class-names.js';
+import { chunkFileNames } from '../helpers/chunk-file-names.js';
 const require = createRequire(import.meta.url);
 // Optional PostCSS import plugin (only used if available)
 // Try to load postcss-import to control CSS @import resolution simply
@@ -610,14 +611,7 @@ export const baseConfig = ({ mode, flavor }: { mode: string; flavor?: string }):
 					// Chrome DevTools can fetch them even though the running code comes
 					// from file:///app on the simulator/device.
 					sourcemapBaseUrl: pathToFileURL(path.resolve(projectRoot, distOutputFolder)).toString() + '/',
-					chunkFileNames: (chunk) => {
-						if (chunk.name === 'vendor') return 'vendor.mjs';
-						// Place worker files at root level, not in assets/
-						if (chunk.name && chunk.name.includes('worker')) {
-							return '[name]-[hash].js';
-						}
-						return '[name]-[hash].mjs';
-					},
+					chunkFileNames,
 					assetFileNames: 'assets/[name][extname]',
 					// Create single vendor chunk for most third-party modules.
 					// Keep critical NativeScript core bootstrap/lifecycle modules in the main bundle

diff --git a/packages/vite/helpers/chunk-file-names.spec.ts b/packages/vite/helpers/chunk-file-names.spec.ts
@@ -0,0 +1,40 @@
+import fs from 'fs';
+import os from 'os';
+import path from 'path';
+import { build } from 'vite';
+import { afterAll, describe, expect, it } from 'vitest';
+
+import { chunkFileNames } from './chunk-file-names.js';
+
+describe('chunkFileNames', () => {
+	const root = fs.mkdtempSync(path.join(os.tmpdir(), 'ns-chunk-names-'));
+	afterAll(() => fs.rmSync(root, { recursive: true, force: true }));
+
+	const buildFileNames = async (activitySource: string): Promise<string[]> => {
+		fs.mkdirSync(path.join(root, 'ui/frame'), { recursive: true });
+		fs.writeFileSync(path.join(root, 'ui/frame/activity.android.js'), activitySource);
+		fs.writeFileSync(path.join(root, 'entry.js'), "import('./ui/frame/activity.android.js');\n");
+		const result: any = await build({
+			root,
+			configFile: false,
+			logLevel: 'silent',
+			build: {
+				write: false,
+				minify: false,
+				rolldownOptions: { input: path.join(root, 'entry.js'), output: { format: 'es', entryFileNames: 'bundle.mjs', chunkFileNames } },
+			},
+		});
+		return (Array.isArray(result) ? result[0] : result).output.map((file: any) => file.fileName).sort();
+	};
+
+	it('names the Android activity chunk without a hash, so a rebuild keeps the path the generated Java activity loads', async () => {
+		expect(await buildFileNames('globalThis.activity = 1;\n')).toEqual(['activity.android.mjs', 'bundle.mjs']);
+		expect(await buildFileNames('globalThis.activity = 2;\n')).toEqual(['activity.android.mjs', 'bundle.mjs']);
+	});
+
+	it('keeps the vendor, worker and hashed names for other chunks', () => {
+		expect(chunkFileNames({ name: 'vendor' })).toBe('vendor.mjs');
+		expect(chunkFileNames({ name: 'image-worker' })).toBe('[name]-[hash].js');
+		expect(chunkFileNames({ name: 'page' })).toBe('[name]-[hash].mjs');
+	});
+});
diff --git a/packages/vite/helpers/chunk-file-names.ts b/packages/vite/helpers/chunk-file-names.ts
@@ -0,0 +1,9 @@
+export function chunkFileNames(chunk: { name?: string }): string {
+	if (chunk.name === 'vendor') return 'vendor.mjs';
+	if (chunk.name?.startsWith('activity.android')) return '[name].mjs';
+	// Place worker files at root level, not in assets/
+	if (chunk.name && chunk.name.includes('worker')) {
+		return '[name]-[hash].js';
+	}
+	return '[name]-[hash].mjs';
+}