Training Babel - Mastering Modern JavaScript Transpilation

$2,310

  • 2 days
  • Onsite
  • 10 people max.
Ref: HXA564
10 people max.
$2,310
In-company rate: from $4,190 for the whole team
On-site and certification exam on quote
2 days
Onsite

Don't let this gap widen

Why this program matters

  • Companies that neglect mastering Babel risk incompatible code on 40% of target browsers.

  • This leads to costly bugs and an estimated 25% traffic loss.

  • Developers lacking these skills see their advancement stalled against teams using modern tools.

  • Acting now prevents these concrete risks to careers and company competitiveness.

Célian Lebacle, Learni trainer · Web & mobile expert
Célian Lebacle

Learni trainer · Web & mobile expert

73%productivity gap
×3cost of inaction
Flag of the United StatesBuilt for US teams
Payment by wire transferEnhanced confidentialityPerfect for companies with 50 to 500 employeesScheduling to fit any time zone

Trusted by — schools, companies and industrial groups

41,134 programs · 25 countries

  • Aptar
  • ArcelorMittal
  • Equans
  • EDF
  • Ubisoft
  • Microsoft
  • Atos

Every program built with a dedicated engineer

  • OpenAI
  • Anthropic
  • Mistral AI
  • NVIDIA
  • Google
  • Amazon Web Services
  • Microsoft Dynamics 365
  • Salesforce
  • ServiceNow
  • SAP
  • Oracle
  • Cisco
  • Fortinet
  • Palo Alto Networks
  • Aruba
  • VMware
  • Red Hat
  • Databricks
  • Snowflake
  • OVHcloud
  • Notion
  • AMD
  • Apple

Companies: Aptar, ArcelorMittal, Equans, EDF, Ubisoft, Microsoft and Atos.

Babel training objectives

  • Master advanced Babel configuration in a professional context
  • Develop solid skills to integrate Babel in the enterprise
  • Design certifiable and maintainable transpilation pipelines
  • Implement plugins and presets tailored to business needs
  • Optimize build performance for JavaScript applications
  • Deploy solutions compatible with target browsers

Program

Babel curriculum: 2 modules over 2 days

Module 1 : Theme: Babel Configuration for JavaScript Projects (presets, plugins, CLI)

The participants discover the installation and configuration of Babel via CLI and config files. They explore official presets, create custom plugins, and test transpilation on concrete enterprise cases. Practical exercises allow adapting the setup to different environments, with deliverables such as a reusable configuration file.

Module 2 : Theme: Integrating Babel with TypeScript and Next.js (builds, optimization)

This day focuses on integrating Babel into modern stacks including TypeScript and Next.js. Learners optimize builds, manage compatibility, and automate testing. They complete a final project with complete deliverables and receive personalized feedback for immediate application in the enterprise.

How Babel skills are assessed

  • Quizzes to validate key concepts at the end of each day
  • Practical exercises corrected in real time
  • Final project with presentation and detailed feedback

How the Babel course is taught

  • Hands-on workshops on machines with real tools
  • Case studies drawn from enterprise projects
  • Collaborative work in pairs on configurations
  • Materials and resources accessible after the training

Babel training: access and practical arrangements

The Training Babel - Mastering Modern JavaScript Transpilation 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.

Equipment required

For the smooth delivery of the Training Babel - Mastering Modern JavaScript Transpilation 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 Babel - Mastering Modern JavaScript Transpilation 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

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.

The Learni story

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.

Our method

How Learni guarantees the quality of your Babel training

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.

Step 1

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.
Step 2

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.
Step 3

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.
Step 4

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.

A child walking to school with a backpack
Our social commitment

A school kit donated to a child for every training booked

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.

  • Backpack, notebooks and essential supplies
  • Distributed through our partner charities
  • Included, at no extra cost to you
Enroll and offer a kit
FAQ

Babel: frequently asked questions

Which tools are used in Babel training?+
Hands-on work runs on presets, plugins, CLI, builds and optimization. Those tools come from the Babel program itself, delivered on site over 2 days, so participants practise on the stack they will use at work.
What can participants do after Babel training?+
They can master advanced Babel configuration in a professional context, develop solid skills to integrate Babel in the enterprise and design certifiable and maintainable transpilation pipelines. Those are the stated objectives of the Babel program at Intermediate level, checked by the end-of-session assessment.
What does the Babel program cover, day by day?+
Day 1: Theme: Babel Configuration for JavaScript Projects (presets, plugins, CLI). Day 2: Theme: Integrating Babel with TypeScript and Next.js (builds, optimization). The Babel program runs over 2 days, delivered on site.
How is Babel training assessed?+
Assessment relies on quizzes to validate key concepts at the end of each day, practical exercises corrected in real time and final project with presentation and detailed feedback. Learni issues a completion certificate together with the individual assessment report at the end of the Babel program, which an L&D team can file as evidence.
How much does Babel training cost per participant?+
Babel training costs $2,310 per participant. For an in-company team, the flat rate starts at $4,190 for the whole group, up to 8 people. The detailed quote, sent within one business day, adjusts the amount to the format and how far the syllabus is tailored to your team.
How long does Babel training take?+
2 days, available live online (US time zones) or on-site at your offices. Half-day tracks spread over several weeks are possible so the team stays operational.
Who pays for Babel training?+
Most US teams pay directly through their company L&D or training budget. Learni invoices in US dollars and accepts bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.
What do participants need to know before Babel training?+
Solid knowledge of JavaScript ES6, experience with npm, and basics of web project configuration.
Is a certificate issued after Babel training?+
Yes. A Learni completion certificate is issued, along with the individual evaluation report. Learni is a certified training provider and prepares for third-party certifications, but does not award them itself.
Does Learni provide the equipment for Babel training?+
No. A computer and a stable internet connection are required for each participant. Learni provides the learning platform, the trainer and all course materials.
Your professional training, anywhere

Let's build your Babel learning path.

30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.

Reply within 24h · Vetted experts · USD invoicing · W-9 available
On-site & remote

Babel training in your city

Available on-site and remotely. Pick your city to see the local training center.

Share in 2 clicks