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 TypeScript types for professional certifying projects
- Develop powerful generics and utility types to boost enterprise skills
- Implement scalable typed architectures with modules and namespaces
- Optimize TypeScript integration in React, Node.js, and modern frameworks
- Design build tools and advanced configurations for efficient deployments
- Migrate legacy JavaScript codebases to TypeScript while minimizing risks
- Produce robust, production-ready TypeScript code for teams
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 upskilling, your team accumulates a technological gap that translates directly into productivity loss.
Organizations that don't train their talents on key topics see their competitiveness drop.
Every quarter without training is a gap widening with competitors who invest.
The cost of inaction quickly exceeds that of well-targeted training.
Program
Module 1Advanced TypeScript Types: unions, intersections, and mapped types (TS Playground tools, refactoring exercises)
Dive into conditional unions and intersections to precisely type complex data, practice with TS Playground on real enterprise cases like managing varied APIs, refactor existing JavaScript code using mapped types for automated transformations, complete interactive exercises on type guards, produce reusable tested utilities in real-time, and validate your skills with a first scalable typed deliverable that immediately boosts your professional development productivity.
Module 2TypeScript Generics: Creating Reusable Components (Node.js, advanced templates, Jest tests)
Learn to design powerful generics for enterprise internal libraries, implement generic constraints with extends and keyof on concrete examples like secure typed collections, integrate them into Node.js for robust middlewares, test parameterized generic functions with Jest, develop the red thread project with React-inspired generic hooks, analyze common errors and solutions, and conclude with a deliverable: a deployable generic library that strengthens your skills in maintainable and performant code.
Module 3TypeScript Architecture: modules, namespaces, and decorators (Webpack, ESM, microservices cases)
Structure enterprise applications with namespaces and barrel modules for impeccable organization, configure Webpack and ESM for hybrid TypeScript/JavaScript builds, implement advanced decorators for dependency injection like in Angular, apply to end-to-end typed Node.js microservices, complete refactoring exercises from monolith to modular, integrate typed patterns like Factory and Observer, produce an architecture diagram and deliverable source code ready for the team, transforming your projects into professional scalable standards.
Module 4TypeScript Integration: React, Node.js, and DevOps Tools (Vite, ESLint, GitHub Actions CI/CD)
Seamlessly integrate TypeScript into React with typed hooks and secure context providers, configure Vite for ultra-fast HMR on complex apps, optimize ESLint and Prettier for zero-defect enterprise code, deploy on Node.js with typed Express for infallible APIs, automate CI/CD via GitHub Actions with strict tsconfig checks, practice on your red thread project with advanced VS Code debugging, generate type coverage reports, and finalize a complete deliverable pipeline that accelerates deployments and elevates your professional DevOps skills.
Module 5Best Practices and TypeScript Migration: Advanced Projects (ts-reset, legacy migration, performance audit)
Master ts-reset and strict configurations for bulletproof production code, migrate a legacy JavaScript codebase step-by-step with allowJs and incremental, audit type performance with tools like type-fest, apply enterprise best practices to monorepos with Nx or Turborepo, finalize the red thread project with typed E2E Cypress tests, simulate a type security audit for sensitive APIs, produce a migration report and optimized deliverable code, certifying your new skills for successful and rapid enterprise transformations.
Evaluation method
- Multiple-choice quiz to validate acquired knowledge at the end of the training
- Continuous evaluation through practical TypeScript exercises
- Defense of the typed red thread project before the expert trainer
Learning method
- Courses led by an active TypeScript expert trainer
- Practical exercises on real enterprise and legacy cases
- Progressive typed red thread project throughout the training
- Complete course materials and advanced TS resources provided to each participant
Methods, materials and delivery
The Training TypeScript - Developing Scalable and Bug-Free JS Apps 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 - Developing Scalable and Bug-Free JS Apps 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 - Developing Scalable and Bug-Free JS Apps 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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