LesliAssets is the official frontend asset library for the Lesli Framework.

It centralizes stylesheets, JavaScript modules, images, icons, view partials, and Tailwind build tooling shared by Lesli applications and engines.

• Shared stylesheets, JavaScript modules, images, and icons
• Reusable email and view resources
• Tailwind entrypoint discovery across applications, engines, and gems
• Quiet builds with concise success messages and captured compiler errors
• Development watch mode and minified production builds

Add LesliAssets to the application:

bundle add lesli_assets

LesliAssets discovers files ending in .tailwind.css inside source/tailwind directories and writes their compiled output to the corresponding Rails asset directory.

Run the bundled builder from the Rails application root:

bundle exec ruby "$(bundle show lesli_assets)/bin/build-tailwind" --root .

Build minified production assets or start the file watchers:

bundle exec ruby "$(bundle show lesli_assets)/bin/build-tailwind" --root . --minify
bundle exec ruby "$(bundle show lesli_assets)/bin/build-tailwind" --root . --watch

Place Tailwind source files in the application or package source directory:

source/tailwind/application.tailwind.css

The builder preserves the relative filename and writes generated CSS under app/assets/stylesheets. Engine and gem outputs receive a snake-case namespace to avoid collisions.

Clone the repository and install its dependencies:

git clone https://github.com/LesliTech/LesliAssets.git
cd LesliAssets
bundle install

To use local source from a Lesli development workspace, reference it from the host application's Gemfile:

gem "lesli_assets", path: "gems/LesliAssets"

Run the default test task from the LesliAssets directory:

bundle exec rake

• Lesli website
• Documentation
• Release notes
• Issue tracker
• Source code

• X: @LesliTech
• hello@lesli.tech
• https://www.lesli.tech

Copyright (c) 2026, Lesli Technologies, S. A.

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/.

The complete license text is available in the license file.

The Open-Source SaaS Development Framework for Ruby on Rails.