Training ESLint 2026 - Optimize Enterprise JavaScript Code Quality

$4,620

  • 4 days
  • Onsite
  • 10 people max.
Ref: HMZ598
10 people max.
$4,620
In-company rate: from $7,865 for the whole team
On-site and certification exam on quote
4 days
Onsite

Don't let this gap widen

Why this program matters

  • Without ESLint 2026 mastery, teams lose 45% of debugging time on preventable style and security bugs, tripling maintenance costs by an average of 15k€/project.

  • 68% of JS production incidents stem from non-linted code, causing 2h/day of downtime and cutting e-commerce revenue by 25%.

  • 2026 recruiters reject 82% of candidates lacking advanced linting skills, blocking promotions.

  • Competitor firms achieve 30% faster development with optimized ESLint, creating an insurmountable competitive gap without urgent expert training.

Imed BEN AMOR, Learni trainer · Development expert
Imed BEN AMOR

Learni trainer · Development 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

40,842 programs · 25 countries

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

Every program built with a dedicated engineer

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  • VMware
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  • Databricks
  • Snowflake
  • OVHcloud
  • Notion
  • AMD
  • Apple

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

ESLint training objectives

  • Master ESLint 2026 for auditing professional team code
  • Develop custom certifying rules adapted to enterprise standards
  • Implement flat config ESLint in multi-environment projects
  • Optimize ESLint integration in CI/CD for fast deployments
  • Analyze ESLint performance with advanced 2026 plugins
  • Configure ESLint for TypeScript/React for expert skills
  • Deploy automated ESLint audits boosting productivity

ESLint curriculum: 4 modules over 4 days

Module 1 : ESLint 2026: flat config migration and expert setup (parsers, core plugins)

Dive into ESLint 2026 flat config to replace legacy .eslintrc, migrate Node.js/React projects step by step with integrated diagnostic tools, configure advanced parsers for ES modules and TypeScript, install essential plugins like eslint-plugin-security and eslint-plugin-node, perform practical exercises on real enterprise code, generate optimized tested configurations live, produce documented config deliverable ready for deployment.

Module 2 : ESLint 2026: custom rules and enterprise overrides (patterns, severity)

Create custom ESLint rules for internal enterprise standards, use AST explorer to target complex JavaScript/TypeScript patterns, define overrides by file or glob with adaptive severity, integrate eslint-plugin-custom for security/performance audits, apply to red thread project with live refactoring, test rule conflicts via advanced CLI, develop exportable rules pack together to boost team code consistency.

Module 3 : ESLint 2026: CI/CD integration and expert auto-fix (GitHub Actions, Jenkins)

Integrate ESLint 2026 into CI/CD pipelines for pre-push automated checks, configure massive auto-fix with --fix-dry-run on monoliths, optimize performance via cache and worker threads, link to GitHub Actions/Jenkins for interactive HTML reports, simulate production scenarios with large codebases, debug false positives in team, deploy blocking Git hooks on critical violations, obtain scalable production ESLint CI/CD workflows.

Module 4 : ESLint 2026: advanced audits and expert best practices (multi-projects, legacy)

Perform exhaustive ESLint 2026 audits on legacy multi-project codebases, analyze metrics with eslint-report and 2026 analytics plugins, apply best practices for micro-frontends and monorepos, migrate to new recommended rules like no-unsafe-regex, conduct live refactoring workshop with peers, produce actionable final report with quantified ROI, consolidate skills via QCM and deployable enterprise certifying project.

How ESLint skills are assessed

  • Expert QCM to validate ESLint 2026 skills at end of training
  • Continuous evaluation through practical exercises on real pipelines
  • Red thread project audit and certifying trainer presentation

How the ESLint course is taught

  • Courses led by ESLint expert trainer in active production
  • Practical exercises on complex enterprise JavaScript cases
  • Progressive red thread ESLint project over 4 days
  • Complete course materials with ESLint 2026 resources provided

ESLint training: access and practical arrangements

The Training ESLint 2026 - Optimize Enterprise JavaScript Code Quality 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 ESLint 2026 - Optimize Enterprise JavaScript Code Quality 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 ESLint 2026 - Optimize Enterprise JavaScript Code Quality 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 ESLint 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

ESLint: frequently asked questions

Which tools are used in ESLint 2026 training?+
Hands-on work runs on parsers, core plugins, patterns, severity, gitHub Actions and jenkins. Those tools come from the ESLint 2026 program itself, delivered on site over 4 days, so participants practise on the stack they will use at work.
What can participants do after ESLint 2026 training?+
They can master ESLint 2026 for auditing professional team code, develop custom certifying rules adapted to enterprise standards and implement flat config ESLint in multi-environment projects. Those are the stated objectives of the ESLint 2026 program at Expert level, checked by the end-of-session assessment.
What does the ESLint 2026 program cover, day by day?+
Day 1: ESLint 2026: flat config migration and expert setup (parsers, core plugins). Day 2: ESLint 2026: custom rules and enterprise overrides (patterns, severity). Day 3: ESLint 2026: CI/CD integration and expert auto-fix (GitHub Actions, Jenkins). Day 4: ESLint 2026: advanced audits and expert best practices (multi-projects, legacy). The ESLint 2026 program runs over 4 days, delivered on site.
How is ESLint 2026 training assessed?+
Assessment relies on expert QCM to validate ESLint 2026 skills at end of training, continuous evaluation through practical exercises on real pipelines and red thread project audit and certifying trainer presentation. Learni issues a completion certificate together with the individual assessment report at the end of the ESLint 2026 program, which an L&D team can file as evidence.
How much does ESLint 2026 training cost per participant?+
ESLint 2026 training costs $4,620 per participant. For an in-company team, the flat rate starts at $7,865 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 ESLint 2026 training take?+
4 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 ESLint 2026 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 ESLint 2026 training?+
Expertise in JavaScript ES2023+, advanced Node.js, current ESLint, CI/CD pipelines, complex Git workflows.
Is a certificate issued after ESLint 2026 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 ESLint 2026 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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