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.
Describe your need, get a tailored program and a pre-filled quote in 3 min. A 100% free call with an advisor.
1 seat held for the next session
Request a call back and an advisor reaches you within 24 business hours, Monday to Saturday.

To fight inequalities in access to education, Learni donates a complete school kit to a child in need for every training booked. You build your skills, a child heads back to school.
Founded by engineers and learning experts, Learni's mission is to make high-impact tech training accessible to teams everywhere. We work remotely with organizations across the US and Canada, in your time zone, to help teams upskill fast.
Don't let this gap widen
Without mastery of Babel 2026, 45% of web traffic remains incompatible with ES2026 features, generating 25% higher bounce rates on e-commerce sites.
Teams lose an average of 30 hours per sprint debugging legacy browser errors, costing 15k€ annually per developer.
In 2026, 68% of JS job postings require modern transpilation, sidelining untrained profiles and stalling promotions.
Every unoptimized project exposes the company to 20% performance losses, widening the competitive gap against agile rivals.
Immersive discovery of Babel 2026 through quick installation with npm and yarn, initial configuration of the babel.config.json file targeting ES2026, first transpilation exercises of modern code to ES5, tests on legacy browsers like IE11, creation of a simple ongoing project with resolution of common errors, personalized feedback from the trainer to anchor professional skills from the first day.
Practical dive into @babel/preset-env presets for Babel 2026, transformation of arrows, classes, and ES2026 modules, exercises on smart polyfills via core-js, integration into a bundler like Webpack, debugging of transpiled bundles, real enterprise cases with legacy code migration, production of an optimized deliverable ready for deployment, immediately valuing your certifying skills.
Mastery of custom Babel 2026 plugins for experimental features, configuration of browserlist targets for precise compatibility, exercises on async/await and optional chaining transformations, resolution of plugin conflicts in complex projects, integration with TypeScript for enterprises, unit tests on transpiled code with Jest, development of an automated CI/CD workflow, demonstrating the business value of your new expertise.
Concrete application of Babel 2026 in popular frameworks like React and Next.js, advanced configuration for production builds, tree-shaking and minification optimization, deployment simulations on Vercel and Netlify, performance audit before/after transpilation, finalization of the ongoing project with multiple-choice quiz and defense, delivery of certifying materials, ensuring immediate skill advancement to boost your professional career.
The Training Babel 2026 - Modern JS Transpiler for All Browsers program is delivered onsite or remote (blended-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.
For the smooth delivery of the Training Babel 2026 - Modern JS Transpiler for All Browsers program, the following equipment is required:
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.
Assessment of skills acquired during the Training Babel 2026 - Modern JS Transpiler for All Browsers program is performed through:
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.
Registration is possible up to 48 business hours before the start of training. All our programs are built for corporate L&D budgets and delivered onsite or remotely.
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.
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.
No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.
Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.
A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.
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Data visualisationIndustry-certifiedAvailable on-site and remotely. Pick your city to see the local training center.
30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.