CodeVetter · Repo Unpack · Behavior traces

angular/angular

Scanned commit 831cb13e1c dated 2026-10-02 — last upstream commit. Generated by codevetter codevetter 1.15.0 on 2026-10-02. Deep analysis by cli:codex via the codex CLI on 2026-10-02 (603s). Source inspection; upstream code and tests were not executed.

The investigation followed application startup, documentation navigation, and search-history persistence across their source boundaries. Additional traces cover HTTP, server rendering, tutorials, DevTools transport, and service-worker restoration. These are ordered source walkthroughs, not observed runtime executions. Each trace names the functions or operations that establish its behavior.

Startup, stage 1: adev main calls bootstrapApplication(AppComponent, appConfig); bootstrapApplication calls createProvidersConfig and then internalCreateApplication.
adev/src/main.ts#L9-13 packages/platform-browser/src/browser.ts#L123-171
Startup, stage 2: internalCreateApplication creates or reuses the platform injector, constructs EnvironmentNgModuleRefAdapter, and calls bootstrap; bootstrap resolves injector initializers and waits for ApplicationInitStatus.donePromise.
packages/core/src/application/create_application.ts#L56-85 packages/core/src/platform/bootstrap.ts#L84-94 packages/core/src/platform/bootstrap.ts#L137-147
Startup, stage 3: bootstrap calls ApplicationRef.bootstrap(rootComponent); ApplicationRef creates a ComponentFactory and ComponentRef, then _loadComponent attaches the view, calls tick, and invokes bootstrap listeners.
packages/core/src/platform/bootstrap.ts#L167-178 packages/core/src/application/application_ref.ts#L496-522 packages/core/src/application/application_ref.ts#L749-768
Documentation navigation, stage 1: Router construction installs and subscribes to the setupNavigations transition stream. navigateByUrl calls scheduleNavigation, which passes request state to handleNavigationRequest; that pushes into the stream whose pipeline checks guards, resolves route data, and loads lazy components.
packages/router/src/router.ts#L179-189 packages/router/src/router.ts#L546-555 packages/router/src/router.ts#L695-716 packages/router/src/navigation_transition.ts#L409-453 packages/router/src/navigation_transition.ts#L657-698 packages/router/src/navigation_transition.ts#L725-747
Documentation navigation, stage 2: the generated docContent resolver calls ContentLoader.getContent; resolved input reaches DocsComponent and DocViewer.renderContentsAndRunClientSetup, which writes HTML, loads examples, and builds navigation aids.
adev/shared-docs/utils/navigation.utils.ts#L114-121 adev/src/app/core/services/content-loader.service.ts#L19-36 adev/src/app/features/docs/docs.component.html#L1-10 adev/shared-docs/components/viewers/docs-viewer/docs-viewer.component.ts#L95-138 adev/src/app/routing/router_providers.ts#L36-67
Search persistence: SearchDialog binds form(searchQuery); debounced resultsResource calls searchWithQuery and parseResult; clicking a result invokes history.addItem → updateHistory → localStorage.setItem, and a later SearchHistory constructor calls loadHistory to restore the Map.
adev/shared-docs/components/search-dialog/search-dialog.component.ts#L57-72 adev/shared-docs/services/search.service.ts#L50-60 adev/shared-docs/components/search-dialog/search-dialog.component.html#L14-19 adev/shared-docs/services/search-history.service.ts#L95-120 adev/shared-docs/services/search.service.ts#L189-229 adev/shared-docs/services/search-history.service.ts#L48-73
HTTP action: HttpClient.request constructs HttpRequest and runs HttpInterceptorHandler.handle on subscription; its chain reaches xsrfInterceptorFn and FetchBackend.handle → doRequest → parseBody, followed by response or error emission.
packages/common/http/src/client.ts#L494-537 packages/common/http/src/backend.ts#L100-133 packages/common/http/src/xsrf.ts#L94-126 packages/common/http/src/fetch.ts#L84-106 packages/common/http/src/provider.ts#L122-137 packages/common/http/src/fetch.ts#L272-334 packages/common/http/src/fetch.ts#L337-368
SSR action: renderApplication → validateAllowedHosts → createServerPlatform → bootstrap({platformRef}) → applicationRef.whenStable → renderInternal; asyncDestroyPlatform runs in finally.
packages/platform-server/src/utils.ts#L342-397
Tutorial action: NodeRuntimeSandbox.init → boot → startInteractiveTerminal → initProject → mountProjectFiles → installDependencies → loadTypes/startDevServer; server-ready forwards the generated preview URL.
adev/src/app/editor/node-runtime-sandbox.service.ts#L86-114 adev/src/app/editor/node-runtime-sandbox.service.ts#L175-201 adev/src/app/editor/node-runtime-sandbox.service.ts#L378-386 adev/src/app/editor/node-runtime-sandbox.service.ts#L426-462
DevTools connection: chrome.runtime.connect creates the port; detectAngular triggers backend script injection and attemptBackendHandshake, which retries handshakeWithBackend every 500 ms until backendReady; onAny handlers relay messages between the two buses.
devtools/projects/shell-browser/src/app/content-script.ts#L18-20 devtools/projects/shell-browser/src/app/content-script.ts#L40-53 devtools/projects/shell-browser/src/app/content-script.ts#L64-114
Offline request: the fetch listener calls Driver.onFetch; accepted requests use handleFetch → ensureInitialized → assignVersion → AppVersion.handleFetch, with safeFetch fallbacks; initialize restores the control-table records through CacheTable.read.
packages/service-worker/worker/src/driver.ts#L206-210 packages/service-worker/worker/src/driver.ts#L289-292 packages/service-worker/worker/src/driver.ts#L579-632 packages/service-worker/worker/src/db-cache.ts#L77-83