Exadel Smart Library

UI component library with flair and precision

ESL is an open-source web components library that helps developers create modern-looking, effective, and user-friendly interfaces faster.

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Why the ESL Web Components Library?

Browser Support

Our web components library uses built-in browser functionality — Web API and ECMAScript 6 features that are fully supported by modern browsers such as Chrome, Firefox, Safari, or Edge.

If you want our UI component library to work in older browsers, you can use one of the polyfill lists — "light" or "full."

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Let's Get Started

Join the array of consumers who successfully use our UI component library. ESL brings to you a number of ultra-light reusable UI components to create unique layouts and utilities to improve the development experience.

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Our News

  • ESL v5.11.0

    ESL v5.11.0 is now available!

    This release adds per‑slide autoplay timeouts for esl-carousel via the esl-carousel-autoplay plugin. It also fixes an incorrect slide‑move debug log when adding a slide via the JS API before it’s in the DOM.

    We also merged the UI Playground codebase into the ESL monorepo. The package remains private; we’ll present it later once docs are moved to the ESL site and independent versioning is in place.

  • ESL v5.10.0

    ESL v5.10.0 is now available!

    This release introduces the new esl-line-clamp mixin, providing a clean solution for limiting text content within blocks. We've enhanced event handling with improved type support in ESLEventUtils and expanded our TypeScript utilities for better development experience. The update also includes important fixes for esl-carousel wheel event handling and resolves missing event type definitions for custom event targets. Additionally, we've updated our stylelint plugin dependency to version 4.0.0, which now requires stylelint 16.22.0 or higher for improved styling capabilities.

  • ESL v5.9.0

    We’ve just released ESL v5.9.0! Here’s a quick summary of what’s new:

    • Improved esl-carousel: reworked state API, enhanced and reworked navigation syntax.
    • Introduced basic support for free-mode carousels with new public property offset and move event.
    • Added viewport visibility control for the esl-carousel-autoplay plugin.
    • Fix esl-carousel-relate-to to follow the initial spec (plugin now out of beta).
    • Extended esl-carousel-wheel to work with free-mode carousels.
    • Enhanced and fixed play-in-viewport in esl-media to work properly with a stopped video.
    • esl-trigger now stops handled click and keydown events from bubbling by default.

  • ESL v5.8.0

    This update adds built-in support for the no-target attribute in esl-tab and esl-trigger, which now hide inactive elements by default. We’ve also introduced the public ESL.version property for easier diagnostics and tooling (make sure to include lib.ts to access it). The esl-carousel received several updates: a more consistent rendering flow, extended proactive event handling, and improved support for dynamic container-class behaviors via the esl-carousel-class-behavior plugin.

  • ESL v5.7.0

    ESL v5.7.0 is here!

    This release introduces dynamic media condition support in ESLMediaQuery via the new ESLMediaShortcuts registry — allowing components to react to changing custom parameters in real time. As ESLMediaQuery powers nearly all ESL components, this unlocks more flexible and expressive behavior across the board. The update also includes minor stability fixes for esl-carousel, improving navigation logic and error handling.

  • ESL v5.6.0

    This release includes further improvements to the ESLCarousel CSS renderer. It now uses a grid layout out of the box, eliminating the need for auto-height calculations.

    This is a major change in CSS Renderer, so the update has been released under a minor version bump.

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