# Data flow — angular/angular

> Canonical page: https://codevetter.com/unpack/angular/data-flow

# Data flow — angular/angular

Scanned commit 831cb13e1c6e5ff17da23273109772c2b088302e (2026-10-02). Generated by codevetter codevetter 1.15.0 on 2026-10-02.

Source inspection; upstream code and tests were not executed.

Framework inputs move through provider-configured pipelines rather than a single application backend. Bootstrap configuration produces injectors and component instances; navigation produces resolved route data and rendered views. HTTP requests become interceptor chains and Fetch events, while documentation search transforms remote records into signal-owned UI state and browser persistence. The service worker owns separate version-assignment and cache-backed state.
- Root component and ApplicationConfig inputs become browser appProviders and platformProviders, then an EnvironmentNgModuleRefAdapter whose injector is passed to bootstrap. — [packages/platform-browser/src/browser.ts#L123-171](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/packages/platform-browser/src/browser.ts#L123-L171) [packages/core/src/application/create_application.ts#L56-85](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/packages/core/src/application/create_application.ts#L56-L85)
- Signal getters call producerAccessed to track reads; changed writes update node.value, increment node.version and the producer epoch, and notify dependent consumers. — [packages/core/primitives/signals/src/signal.ts#L81-103](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/packages/core/primitives/signals/src/signal.ts#L81-L103) [packages/core/primitives/signals/src/signal.ts#L120-125](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/packages/core/primitives/signals/src/signal.ts#L120-L125)
- Template text enters HtmlParser with source-mapping options; i18n metadata is processed before whitespace removal so message IDs retain their expected source relationship. — [packages/compiler/src/render3/view/template.ts#L140-156](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/packages/compiler/src/render3/view/template.ts#L140-L156) [packages/compiler/src/render3/view/template.ts#L179-195](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/packages/compiler/src/render3/view/template.ts#L179-L195) [packages/compiler/src/render3/view/template.ts#L218-242](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/packages/compiler/src/render3/view/template.ts#L218-L242)
- navigateByUrl parses and merges a UrlTree, scheduleNavigation registers a pending task, and handleNavigationRequest receives current snapshots, navigation options, and promise completion callbacks. — [packages/router/src/router.ts#L546-555](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/packages/router/src/router.ts#L546-L555) [packages/router/src/router.ts#L695-721](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/packages/router/src/router.ts#L695-L721)
- Documentation navigation metadata becomes route.data and a docContent resolver; that resolver injects DOCS_CONTENT_LOADER and passes contentPath to getContent. — [adev/shared-docs/utils/navigation.utils.ts#L94-123](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/adev/shared-docs/utils/navigation.utils.ts#L94-L123) [adev/src/app/app.config.ts#L45-47](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/adev/src/app/app.config.ts#L45-L47)
- ContentLoader normalizes missing extensions to .md.html, fetches assets/content/{path} as text, produces {contents, id}, and caches the Promise by normalized path. — [adev/src/app/core/services/content-loader.service.ts#L15-36](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/adev/src/app/core/services/content-loader.service.ts#L15-L36)
- DocsComponent receives resolved DocContent as an input; its template passes contents to DocViewer, whose effect renders HTML and installs client-side controls before emitting contentLoaded. — [adev/src/app/features/docs/docs.component.ts#L21-27](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/adev/src/app/features/docs/docs.component.ts#L21-L27) [adev/src/app/features/docs/docs.component.html#L1-10](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/adev/src/app/features/docs/docs.component.html#L1-L10) [adev/shared-docs/components/viewers/docs-viewer/docs-viewer.component.ts#L87-138](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/adev/shared-docs/components/viewers/docs-viewer/docs-viewer.component.ts#L87-L138)
- HttpClient constructs HttpRequest and invokes the handler per subscription; HttpInterceptorHandler deduplicates interceptors, composes them in registration order, and removes its stability task through finalize. — [packages/common/http/src/client.ts#L494-537](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/packages/common/http/src/client.ts#L494-L537) [packages/common/http/src/backend.ts#L100-133](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/packages/common/http/src/backend.ts#L100-L133)
- FetchBackend serializes request bodies and headers into RequestInit, reads response chunks, parses the requested body type, and emits either HttpResponse or HttpErrorResponse. — [packages/common/http/src/fetch.ts#L272-334](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/packages/common/http/src/fetch.ts#L272-L334) [packages/common/http/src/fetch.ts#L337-368](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/packages/common/http/src/fetch.ts#L337-L368) [packages/common/http/src/fetch.ts#L395-425](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/packages/common/http/src/fetch.ts#L395-L425)
- SearchQuery drives a debounced resource; Algolia hits become SearchResultItem records, while history clicks copy those records into a signal-backed Map and serialize sorted items to localStorage. — [adev/shared-docs/services/search.service.ts#L45-60](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/adev/shared-docs/services/search.service.ts#L45-L60) [adev/shared-docs/services/search.service.ts#L103-140](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/adev/shared-docs/services/search.service.ts#L103-L140) [adev/shared-docs/components/search-dialog/search-dialog.component.html#L14-19](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/adev/shared-docs/components/search-dialog/search-dialog.component.html#L14-L19) [adev/shared-docs/services/search-history.service.ts#L52-73](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/adev/shared-docs/services/search-history.service.ts#L52-L73)
- The service worker restores manifests, client assignments, and the latest version from its control table; CacheTable maps keys to requests and stores values as JSON responses. — [packages/service-worker/worker/src/driver.ts#L648-679](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/packages/service-worker/worker/src/driver.ts#L648-L679) [packages/service-worker/worker/src/db-cache.ts#L65-88](https://github.com/angular/angular/blob/831cb13e1c6e5ff17da23273109772c2b088302e/packages/service-worker/worker/src/db-cache.ts#L65-L88)

Every claim links to its cited files at the pinned commit. Citations identify source evidence; they do not establish runtime correctness. Independent CodeVetter scan — not reviewed by upstream maintainers.

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