A Vue 2 to Vue 3 migration is worth planning when the application needs supported dependencies or must pass current security reviews. The older release reached end of life in December 2023 and no longer receives upstream security fixes. I map the dependency and library risks first, then move the application in stages around normal product delivery.
I have moved production applications from Vue 2, AngularJS and jQuery to Vue 3. One was the UI for OPAP's retail betting machines, a system the business depends on every day. I stage the work around normal delivery, with measurable milestones and a clear rollback path. Before choosing the first slice, I inventory the component tree, state layer and build chain so the plan follows the codebase's real dependencies.
Staying on an unsupported release leaves the framework frozen while libraries and build tools continue to move. Older dependencies can block safe upgrades, and security reviews may flag the stack. Workarounds also add to the later migration scope when the old codebase keeps growing. If new features continue to land on the old stack, those changes have to be assessed during the upgrade as well.
The result is a maintained frontend with current documentation and a path to upstream fixes. Every other dependency still needs its own review. I use Vite and TypeScript where they fit the codebase. If the starting point is different, see my jQuery migration service or server-rendered application migrations.
A current frontend also makes AI features, such as copilots or retrieval search, easier to add because the interface no longer has to be modernized first.
What the migration delivers
- Current build tooling that removes legacy build constraints from feature delivery and day-to-day maintenance (Vite)
- A documented TypeScript codebase aligned with current tooling for onboarding and maintenance
- A staged plan designed to let normal product delivery continue where dependencies allow
- Documentation, tests and a 30-day warranty after go-live
How long does a version migration take?
The schedule depends on component count, state management, build tooling, incompatible libraries and test coverage. The technical audit maps those dependencies and gives you a concrete estimate before implementation starts.
Can my team keep shipping features during the migration?
Often, yes. The migration can run slice by slice behind feature flags, so normal product delivery can continue where dependencies allow. I plan each stage to minimize disruption and keep a clear rollback path.
What happens with incompatible libraries?
The audit includes a full dependency map. Every incompatible library then gets a path: an upgrade, a maintained alternative, or a thin replacement component.
Do you also migrate AngularJS or jQuery apps?
Yes. The process is the same: audit, architecture and incremental migration. I have moved AngularJS and jQuery frontends into a component-based architecture for clients across the EU and US.
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Athens, Greece, working remotely with EU & US teams
info@offline-web.com