StyleJust

StyleJust is a lightweight, open‑source JavaScript library designed to simplify the process of styling web components by providing a declarative API for applying CSS rules. It allows developers to write style declarations as plain JavaScript objects, which are then converted into CSS at runtime, enabling dynamic theming and responsive design without the need for separate stylesheet files. The library includes automatic vendor prefixing, support for CSS custom properties, and integration with popular build tools such as webpack and Rollup.

The project was initially conceived by the front‑end developer group at TechForge Labs in 2019, when the team identified inconsistencies in the styling workflow across multiple internal projects. The first stable release, version 1.0, was published on npm in early 2020. Subsequent releases have focused on improving type‑safety for TypeScript users, expanding the set of supported CSS properties, and adding a plugin system for extending functionality.

Core features of StyleJust include component‑scoped styles, a theme provider for global design tokens, and a utility for generating responsive media queries. The API follows a simple pattern: developers call `styleJust.createStyles({ ... })` to define styles, then apply them to elements or React components via a `className` prop. The library also exposes a `useTheme` hook for retrieving current theme values in functional components.

StyleJust has gained traction within the front‑end community due to its minimal footprint (under 30 KB minified), compatibility with both vanilla JavaScript and React applications, and an active issue tracker that encourages community contributions. Current adopters include small agencies and individual developers, while larger enterprises are evaluating the library for internal design system projects.