Training: Mastering Babel: The JavaScript Transpilation Tool for Modern Applications

$1,155

  • 1 day
  • Onsite
  • 8 people max.
Ref: MTC880
8 people max.
$1,155
In-company rate: from $2,195 for the whole team
On-site and certification exam on quote
1 day
Onsite

Don't let this gap widen

Why this program matters

  • Without mastery of JavaScript transpilation via Babel, 65% of modern applications fail to achieve optimal browser compatibility, generating unexpected bugs in production.

  • Teams lose an average of 20 hours per week debugging these incompatibilities, equating to more than 15 000 € in wasted productivity annually per developer.

  • 40% of project delays and client losses stem from unmaintainable code, threatening company profitability and your technical credibility.

  • Every month without this expertise exposes your projects to critical vulnerabilities and missed opportunities against the competition.

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

40,869 programs · 25 countries

  • Aptar
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  • Equans
  • EDF
  • Ubisoft
  • Microsoft

Every program built with a dedicated engineer

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

Babel training objectives

  • Understand the role and functioning of Babel in the modern JavaScript ecosystem
  • Configure a Babel project from scratch
  • Identify and use the main Babel plugins and presets
  • Transform modern ECMAScript code for maximum compatibility
  • Integrate Babel into a build chain with Webpack and other tools
  • Monitor performance and debug transpilation-related issues

Program

Babel curriculum: 4 modules over 1 day

Module 1 : Introduction to Babel and JavaScript Compatibility Issues

History of Babel, JavaScript compatibility challenges, environment limitations, why and when to use Babel. Overview of alternatives and complementarities with other tools (TypeScript, Webpack).

Module 2 : Getting Started: Installation and First Configuration

Local and global Babel installation, creation of the .babelrc file, exploration of main options, command-line usage and configuration with package.json.

Module 3 : Discovery of Essential Plugins and Presets

Understand the difference between plugins and presets. Use @babel/preset-env for browser targeting, introduction to popular plugins (proposals, polyfills), handling ES6+ syntax and JSX for React.

Module 4 : Advanced Usage and Integration into the Build Chain

Integrate Babel with Webpack, cache and performance management, automation with npm scripts and other task runners. Compatibility scenarios (browser, Node.js), conditional compilation.

How Babel skills are assessed

  • Multiple-choice quiz to validate knowledge at the end of the day
  • Practical exercises with analysis of real-world cases
  • Implementation of a complete mini-transpilation project

How the Babel course is taught

  • Theoretical presentations and practical demonstrations
  • Step-by-step guided exercises based on real configurations
  • Downloadable digital learning materials

Babel training: access and practical arrangements

The Training: Mastering Babel: The JavaScript Transpilation Tool for Modern Applications 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: Mastering Babel: The JavaScript Transpilation Tool for Modern Applications 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: Mastering Babel: The JavaScript Transpilation Tool for Modern Applications 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

What can participants do after Training: Mastering Babel: The JavaScript Transpilation Tool for Modern Applications training?+
They can understand the role and functioning of Babel in the modern JavaScript ecosystem, configure a Babel project from scratch and identify and use the main Babel plugins and presets. Those are the stated objectives of the Training: Mastering Babel: The JavaScript Transpilation Tool for Modern Applications program at Intermediate level, checked by the end-of-session assessment.
What does the Training: Mastering Babel: The JavaScript Transpilation Tool for Modern Applications program cover, day by day?+
Day 1: Introduction to Babel and JavaScript Compatibility Issues. Day 2: Getting Started: Installation and First Configuration. Day 3: Discovery of Essential Plugins and Presets. Day 4: Advanced Usage and Integration into the Build Chain. The Training: Mastering Babel: The JavaScript Transpilation Tool for Modern Applications program runs over 1 day, delivered on site.
How is Training: Mastering Babel: The JavaScript Transpilation Tool for Modern Applications training assessed?+
Assessment relies on multiple-choice quiz to validate knowledge at the end of the day, practical exercises with analysis of real-world cases and implementation of a complete mini-transpilation project. Learni issues a completion certificate together with the individual assessment report at the end of the Training: Mastering Babel: The JavaScript Transpilation Tool for Modern Applications program, which an L&D team can file as evidence.
How much does Training: Mastering Babel: The JavaScript Transpilation Tool for Modern Applications training cost per participant?+
Training: Mastering Babel: The JavaScript Transpilation Tool for Modern Applications training costs $1,155 per participant. For an in-company team, the flat rate starts at $2,195 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 Training: Mastering Babel: The JavaScript Transpilation Tool for Modern Applications training take?+
1 day, 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 Training: Mastering Babel: The JavaScript Transpilation Tool for Modern Applications 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 Training: Mastering Babel: The JavaScript Transpilation Tool for Modern Applications training?+
Basic knowledge of JavaScript and the Node.js environment.
Is a certificate issued after Training: Mastering Babel: The JavaScript Transpilation Tool for Modern Applications 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 Training: Mastering Babel: The JavaScript Transpilation Tool for Modern Applications 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.
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