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Fix: stop Vitest SSR-transforming the compiled agent bundle in app_loader integration tests #499

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Fix: stop Vitest SSR-transforming the compiled agent bundle in app_loader integration tests #499

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69077f9
fix(test): externalize compiled agent bundles from Vite in the integr…
Aug 2, 2026
a670079
fix(test): warm the AgentLoader in beforeAll in the app_loader discov…
Aug 2, 2026
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2 changes: 2 additions & 0 deletions tests/integration/app_loader/app_loader_test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,8 @@ describe('AgentLoader discovery and loading integration', () => {
beforeAll(async () => {
await execAsync('npm install', {cwd: projectPath});
loader = new AgentLoader(projectPath);
// Warm the loader so its one-off bundling cost lands in the hook budget.
await loader.preloadAgents();
});

it(
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10 changes: 10 additions & 0 deletions vitest.config.ts
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Expand Up @@ -29,6 +29,15 @@ const INTEGRATION_HOOK_TIMEOUT_MS = 120000;
*/
const INTEGRATION_TEST_TIMEOUT_MS = 60000;

/**
* Compiled-agent-bundle paths to keep out of Vite's SSR transform in the
* `integration` project. AgentLoader esbuilds each agent into a throwaway
* multi-MB bundle under `<tmpdir>/adk_agent_loader/<uuid>/`; Vitest inlines it
* because it is outside the project root with no `node_modules` segment.
* Externalizing drops app_loader_test.ts's transform total from 38.1s to 1.1s.
*/
const AGENT_LOADER_BUNDLE_PATTERN = /[\\/]adk_agent_loader[\\/]/;

export default defineConfig({
test: {
poolOptions: {
Expand Down Expand Up @@ -88,6 +97,7 @@ export default defineConfig({
environment: 'node',
hookTimeout: INTEGRATION_HOOK_TIMEOUT_MS,
testTimeout: INTEGRATION_TEST_TIMEOUT_MS,
server: {deps: {external: [AGENT_LOADER_BUNDLE_PATTERN]}},
alias: {
'@google/adk': path.resolve(__dirname, './core/src'),
'@google/adk-integrations': path.resolve(
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