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.
Training ESLint - Optimizing JavaScript Code Quality
Trusted by — schools, companies and industrial groups
40,844 programs · 25 countries
Every program built with a dedicated engineer
Companies: Aptar, ArcelorMittal, Equans, EDF, Ubisoft and Microsoft.
ESLint training objectives
- Master advanced ESLint configuration for professional certifying projects
- Develop custom ESLint rules adapted to company standards
- Integrate ESLint into CI/CD pipelines for DevOps skills
- Optimize static analysis of JavaScript code in teams
- Implement advanced ESLint plugins for efficient audits
- Design scalable multi-project ESLint configurations
ESLint curriculum: 4 modules over 4 days
Module 1 : ESLint Configuration: Customize Rules and Advanced Plugins (ESLint, .eslintrc, parsers)
Dive into expert ESLint configuration by creating a custom .eslintrc.yml file for your codebase, install and configure parsers like @babel/eslint-parser for ESNext, explore essential plugins such as eslint-plugin-import and eslint-plugin-react-hooks, perform practical exercises on a real company project, test overrides for specific environments, produce an optimized configuration ready to deploy with an initial analysis report.
Module 2 : Custom ESLint Rules: Create and Debug Advanced Rules (AST, espree, rule-tester)
Learn to develop custom ESLint rules by manipulating the AST with espree, use rule-tester to validate your creations live, integrate complex patterns like memory leak detection or async anti-patterns, apply to concrete cases of legacy company code, debug with ESLint CLI and VS Code, generate reusable rules publishable on npm, transform your skills into immediate professional assets.
Module 3 : ESLint Integration: CI/CD and Git Hooks (husky, GitHub Actions, lint-staged)
Integrate ESLint seamlessly into your DevOps workflows by configuring husky and lint-staged for automated pre-commit hooks, deploy ESLint jobs in GitHub Actions and Jenkins with custom failure thresholds, test on a complete company pipeline, manage massive auto-fixes with --fix, analyze HTML/JUnit reports for team reviews, secure your merges against violations, boost collective productivity with scalable certifying practices.
Module 4 : ESLint Audit and Optimization: Performance and Migration (flat config, advanced reports)
Master large-scale ESLint audits by migrating to flat config for x10 performance, generate detailed reports with eslint-formatter-pretty and visualization plugins, optimize for monorepos with smart overrides, fix violations on legacy code via guided exercises on real projects, measure ROI impact with before/after metrics, deploy a complete company strategy, leave with a certifying action plan to reduce bugs by 50% from the first month.
How ESLint skills are assessed
- Advanced multiple-choice quiz on ESLint configurations and rules
- Development and testing of a personal custom rule
- Complete audit of an ongoing project with final report
How the ESLint course is taught
- Sessions led by ESLint experts in production environments
- Practical exercises on real company codebases
- Custom ESLint ongoing project over 4 days
- Detailed course materials and ready-to-use configurations
ESLint training: access and practical arrangements
The Training ESLint - Optimizing 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 - Optimizing 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 - Optimizing 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.
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.
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
FAQ
ESLint: frequently asked questions
Which tools are used in ESLint training?+
Hands-on work runs on ESLint, .eslintrc, parsers, AST, espree and rule-tester. Those tools come from the ESLint 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 training?+
They can master advanced ESLint configuration for professional certifying projects, develop custom ESLint rules adapted to company standards and integrate ESLint into CI/CD pipelines for DevOps skills. Those are the stated objectives of the ESLint program at Advanced level, checked by the end-of-session assessment.
What does the ESLint program cover, day by day?+
Day 1: ESLint Configuration: Customize Rules and Advanced Plugins (ESLint, .eslintrc, parsers). Day 2: Custom ESLint Rules: Create and Debug Advanced Rules (AST, espree, rule-tester). Day 3: ESLint Integration: CI/CD and Git Hooks (husky, GitHub Actions, lint-staged). Day 4: ESLint Audit and Optimization: Performance and Migration (flat config, advanced reports). The ESLint program runs over 4 days, delivered on site.
How is ESLint training assessed?+
Assessment relies on advanced multiple-choice quiz on ESLint configurations and rules, development and testing of a personal custom rule and complete audit of an ongoing project with final report. Learni issues a completion certificate together with the individual assessment report at the end of the ESLint program, which an L&D team can file as evidence.
How much does ESLint training cost per participant?+
ESLint 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 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 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 training?+
Mastery of JavaScript ES6+, basic usage of ESLint and Node.js.
Is a certificate issued after ESLint 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 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 ESLint learning path.
30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.
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