Rigorous trainer selection
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
- Triple validation: technical, pedagogical, sectoral.
- Minimum rating 4.8/5 over the last 12 sessions.
Learning objectives
- Master advanced generics for flexible APIs
- Implement custom decorators and metaprogramming
- Optimize conditional and inferred types
- Build powerful mapped types and utility types
- Integrate TypeScript into scalable architectures
- Manage typed errors and runtime validation
- Develop and publish typed npm libraries
The Learni story
Founded by passionate learning and innovation experts, Learni's mission is to make professional training accessible to everyone, anywhere in the world. Our team operates in major hubs — London, New York, Boston — and internationally, to support talents and organizations in upskilling.
Don't let this gap widen
Why this program matters
Without this expert training, expose yourself to 40% more typing bugs on complex projects, lose 15-20 hours per week on manual debugging, delivery delays up to 2 months on scalable apps, stagnant salaries compared to versatile juniors, integration failures in modern Angular/NestJS teams where 70% of job offers require advanced TypeScript.
Risk rapid obsolescence: TypeScript evolves, 60% of senior devs struggle with generics and decorators, impacting project ROI by 25%.
Invest now to dominate.
Program
Module 1Advanced types: generics, unions and intersections (VSCode, TS Playground)
Dive into parameterized generics, refactor JavaScript code into typed TypeScript, complete exercises on discriminated unions, build reusable utility functions, test live with TS Playground for immediate mastery and dramatic productivity gains.
Module 2Conditional and inferred types: optimization (TypeScript Compiler API)
Explore conditional types for dynamic logic, infer complex types from generics, apply exercises to real design patterns, generate automated types via the compiler API, transform your projects into robust and scalable architectures.
Module 3Mapped types and utility types: customization (advanced exercises)
Create mapped types to transform entire objects, extend Pick/Omit into custom utilities, code real-world cases like typed REST APIs, iterate over type trees, produce reusable deliverables that supercharge your code in an instant.
Module 4Decorators and metaprogrammation: frameworks (NestJS, Angular)
Develop custom class and method decorators, integrate them into NestJS or Angular, simulate advanced validation scenarios, debug runtime with typed guards, deploy functional prototypes for enterprise-ready apps.
Module 5Typed errors, libraries and integration: final projects (npm, CI/CD)
Manage errors with branded types and Zod, build a fully typed npm library, integrate CI/CD with GitHub Actions, review a personal capstone project, earn an expert certificate to showcase your skills and accelerate promotions.
Evaluation method
- Daily interactive quizzes, final typed project, pre/post skills self-assessment, Qualiopi certification
Learning method
- 70% hands-on with real exercises, 30% applied theory, individualized live feedback
Methods, materials and delivery
The Training TypeScript Expert - Optimize Your Complex Projects program is delivered onsite or remote (blended-learning, e-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.
The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.
Equipment required
For the smooth delivery of the Training TypeScript Expert - Optimize Your Complex Projects program, the following equipment is required:
- Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
- Training environments installed on workstations or accessible online
- Course materials, hands-on exercises and complementary resources
- Post-training access to materials and educational resources
For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.
* contact us for remote delivery feasibility** ratio varies depending on the program
Skills assessment methods
Assessment of skills acquired during the Training TypeScript Expert - Optimize Your Complex Projects program is performed through:
- During training: case studies, hands-on labs and professional scenarios
- End of training: self-assessment questionnaire and skills evaluation by the trainer
- After training: completion certificate detailing acquired skills
Program accessibility
Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.
Enrollment terms and lead times
Learni programs are available inter-company and intra-company, onsite or remote. Enrollments are possible up to 48 business hours before the program starts. Our programs are eligible for corporate funding paths. Contact us to discuss your training project and funding options.
Verified reviews
What our learners
★★★★★
« cool, j'ai appris des trucs »
★★★★★
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
★★★★★
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
★★★★★
« 😊👍 »
★★★★★
« bien 👍 »
★★★★★
« Allan Busi t'es au top, continue comme ça. formation géniale »
★★★★★
« cool, j'ai appris des trucs »
★★★★★
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
★★★★★
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
★★★★★
« 😊👍 »
★★★★★
« bien 👍 »
★★★★★
« Allan Busi t'es au top, continue comme ça. formation géniale »
★★★★★
« cool, j'ai appris des trucs »
★★★★★
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
★★★★★
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
★★★★★
« 😊👍 »
★★★★★
« bien 👍 »
★★★★★
« Allan Busi t'es au top, continue comme ça. formation géniale »
Our method
Training quality, guaranteed at every step
Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.
You meet the trainer beforehand
30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.
- Live briefing on goals and team context.
- Veto right — we swap the trainer for free if needed.
Content tailored to your context
No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.
- Hands-on cases drawn from your stack and projects.
- Program co-written then validated by your team.
Continuous quality follow-up
Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.
- NPS, knowledge quizzes and skills self-assessment.
- Satisfaction guarantee: fully satisfied or free rework.
A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.
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