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Founded by passionate advocates of learning and innovation, Learni set out to make professional training accessible to everyone, everywhere in the world. Our team works in the largest cities such as Paris, Lyon, Marseille, and internationally, to support talents and organizations in their skills development.
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Don't let this gap widen
Without advanced Vitest, your JavaScript tests slow down builds by 40% on average, exposing 30% of critical bugs in production according to State of JS studies.
Lose 2h/day on manual debugging, impacting team productivity by 25% and inflating corrective costs to 5000€/month for a team of 5 devs.
With low coverage <70%, 60% of features regress in staging, delaying releases by weeks and frustrating clients.
Master Vitest or risk costly downtime, demotivated teams, and more agile competitors who deploy 3x faster.
The Advanced Vitest Training - Ultra-Fast & Reliable JS Tests training is delivered in-person or remotely (blended-learning, e-learning, virtual classroom, remote in-person). At Learni, a Qualiopi-certified training organization, each program is designed to maximize skills acquisition, regardless of the training mode chosen.
The trainer alternates between demonstrative, interrogative, and active methods (through practical exercises and/or real-world scenarios). This pedagogical approach ensures concrete and directly applicable learning in the workplace.
To ensure the quality of the Advanced Vitest Training - Ultra-Fast & Reliable JS Tests training, Learni provides the following teaching resources:
For in-house training at a location external to Learni, the client ensures and commits to having all necessary teaching materials (IT equipment, internet connection...) for the proper conduct of the training action in accordance with the prerequisites indicated in the communicated training program.
The assessment of skills acquired during the Advanced Vitest Training - Ultra-Fast & Reliable JS Tests training is carried out through:
Learni is committed to the accessibility of its professional training programs. All our training programs are accessible to people with disabilities. Our teams are available to adapt teaching methods to your specific needs. Do not hesitate to contact us for any accommodation request.
Learni training programs are available for inter-company and intra-company settings, both in-person and remote. Registration is possible up to 48 business hours before the start of training. Our programs are eligible for OPCO, Pôle emploi, and FNE-Formation funding. Contact us to discuss your training project and funding possibilities.
Dive into custom Vitest configuration for Vite, install advanced plugins like @vitest/ui, create dynamic mocks for external APIs via vi.mock, perform exercises on spies to validate interactions, generate interactive snapshots on complex components, analyze coverage in real-time with detailed HTML reports, all applied to a real project to deliver a robust and scalable test suite.
Accelerate your tests with parallel mode and persistent cache, integrate Vitest with GitHub Actions for automated runs, configure coverage thresholds to 90%, profile performance on 1000+ tests, develop custom matchers for specific domains, debug via integrated debugger and detailed traces, finalize with a capstone project, a functional CI/CD pipeline, and an optimization report, boosting your dev efficiency by 50% from the next day.
Target audience
Senior JavaScript developers, frontend leads, web architects upskilling on performant testing.
Prerequisites
Advanced mastery of JavaScript/ES6+, experience with Vite or similar bundler, basics of Jest or equivalent testing framework.
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