Vue JS 3: Composition API (with Pinia, Firebase 9 & Vite)

Danny Connell focuses on the transition from familiar Vue Options API patterns to Composition API. A project connects the new structure with Pinia, Vite and Firebase authentication and data. It suits existing Vue learners who want to understand what changes in their implementation rather than start again with a completely introductory web course.

What you will learn

• Translate Options API patterns into Composition API.
• Manage application state with Pinia.
• Explore Firebase authentication, data and security rules.

Who this suits

Learners who already know Vue and Options API; this is a transition course rather than a first JavaScript course.

Before you enroll

Check the demonstrated Vue version and package dependencies before starting. Router, state-management and backend interfaces evolve, so compare installation steps with current documentation. Use a test project and permitted assets. Practice explaining data flow and handling empty, loading and error states before treating a demonstration as a finished application.

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Put it into practice

Refactor one small Options API component and explain how the Composition API version groups related behavior and exposes values to the template.

Source and review

This overview is based on the provider's published information, checked on 12 October 2026. It is an editorial assessment, not a claim that we completed the resource. Time filters are approximate study ranges; projects and exercises can take longer.

Where a formal level is unavailable, the level filter is an editorial estimate based on the published audience and requirements. Duration filters reflect the listed video time; exercises and independent practice can take longer.

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Supporting provider sources

• support.udemy.com: supporting course information