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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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30 free minutes with a training advisor — no commitment.
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Don't let this gap widen
Without advanced Vitest, your Jest tests take 10s per run, slowing daily deployments and costing 20h/week in debugging.
35% of unit bugs go unnoticed, generating prod incidents at 5000€ each according to Gartner.
Teams lose 40% speed in CI/CD, delaying market features.
Imagine: a live crash seen by 10k users due to weak mocks, or 60% coverage hiding critical regressions.
With our alumni, 80% gain in test perf, zero incidents in 6 months, ROI in 2 weeks.
The Training Vitest Advanced - 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 Training Vitest Advanced - 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 Training Vitest Advanced - 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 expert Vitest configuration to speed up your builds, install and configure parallel and pool modes, create advanced mocks for fetch and local modules during practical exercises on an e-commerce app, generate dynamic snapshots for React components, test edge cases with vi.mock, produce your first custom coverage reports, all while benefiting from immediate feedback to boost your productivity from tomorrow.
Master Vitest integration into modern stacks, configure ultra-fast CI/CD pipelines with GitHub Actions and smart caching, optimize coverage to 95% via exercises on real Vue apps, apply TDD to refactor legacy code, profile slow tests for sub-second runs, debug with VS Code debugger, deploy scalable test suites on microservices, leaving with production-ready deliverables and total confidence in your deployments.
Target audience
Senior JavaScript developers, technical leads, frontend architects seeking to upskill on performant unit testing.
Prerequisites
Mastery of JavaScript ES6+, experience with Jest or a similar testing framework, regular use of Vite or modern bundlers.
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