Vue 2 to Vue 3 Migration

Situation: The client was running a Vue 2 application that was stable but limited by an older runtime, Options API, and weaker TypeScript support. They wanted better performance, modern tooling, and a codebase that would be easier to maintain and extend long term.

Task: Upgrade the application from Vue 2 to Vue 3 with minimal disruption: improve performance and bundle size, adopt Composition API and modern state management (e.g. Pinia), and improve type safety and developer experience.

Action: We upgraded the build to Vue 3 and Vite, then migrated in phases: dependencies and router first, then components and state. We refactored from Options API to Composition API where it added value, updated or replaced incompatible plugins, and ran tests and E2E checks throughout to ensure stability.

Result: Applications run faster with smaller bundles, the codebase is more modular and easier to extend, and the team gained better tooling and TypeScript support. The migration set a clear foundation for future features and maintenance.