Migrate from AngularJS

Mon, 01 Jan 0001 00:00:00 +0000

Goal

Move an application without treating API familiarity as runtime equivalence.

Before you start

Add browser-level tests for the workflows that must survive migration. Record all modules, providers, directives, template syntax, router states, and custom decorators.

Migrate in boundaries

Start a small independent AngularTS application or island.
Move one leaf component and its direct service dependencies.
Replace removed abstractions with the documented native or module API.
Run behavior tests and inspect console errors.
Repeat for shared application code.

AngularTS preserves the HTML-first module, injection, controller, scope, directive, filter, and two-way-binding mental models. Its runtime is different: reactive proxies replace digest polling, native promises replace $q, native timers replace timeout abstractions, and native DOM elements replace wrapper objects.

Upgrade AngularTS

Mon, 01 Jan 0001 00:00:00 +0000

Before changing the version

Record the current production version, read release and migration notes, and make sure the existing application passes its checks. Archive generated integration artifacts so regeneration differences are reviewable.

Upgrade

Update AngularTS and its lockfile entry.
Regenerate TypeScript declarations and every maintained language binding.
Run formatting, lint, type, documentation, and generated-file checks.
Run core and integration tests.
Build production assets and exercise critical browser paths.
Review bundle, CSP, storage, routing, and service-worker changes.

Keep the change reversible

Do not combine a framework upgrade with unrelated application rewrites. Deploy an immutable artifact, retain the previous artifact, and understand whether stored data or service-worker caches prevent a simple rollback.

Migration on AngularTS