Styletron-react (current version 6.1.1) provides React bindings for Styletron, a universal, high-performance CSS-in-JS engine. It streamlines styling in React applications by offering an API inspired by `styled-components` but primarily uses JavaScript objects for styles instead of template strings. Key differentiators include its "atomic CSS" approach, which generates highly optimized, declaration-level deduplicated CSS, minimizing bundle size and improving critical rendering path performance for server-rendered pages. It also boasts efficient client-side style injection with hyper-granular memoization and fast cache hydration. Styletron aims to eliminate global namespace concerns, simplify dependencies, and handle dead code elimination and minification effectively, requiring no extra tooling beyond npm. The library is actively maintained, with a typical release cycle of around 34 days, as seen in broader Styletron comparisons. It supports both traditional styled components and a `useStyletron` hook for flexible, performant styling.
npm install styletron-reactVerified import paths — ran on the pinned version, not inferred.
This example demonstrates how to set up Styletron with `styletron-react`, including creating a client engine, using both the `styled` factory for component-based styling, and the `useStyletron` hook for dynamic, inline-style-like class generation.
Upgrade your `react` and `react-dom` packages to version `16.8.0` or newer.
Review existing `withStyle` usages for unintended deep merging effects. Replace all instances of `$ref` with the standard `ref` prop and ensure components correctly use `React.forwardRef`.
Prefix any props intended for internal styling or logic (and not meant for the DOM) with a `$` (e.g., `styled('div', props => ({ color: props.$isActive ? 'blue' : 'black' }))`).Consistently use either shorthand or longhand properties for a given CSS feature (e.g., use `borderWidth`, `borderStyle`, `borderColor` or just `border`, but not both `border` and `borderWidth` in the same style object). If using `styletron-engine-monolithic`, this restriction is relaxed.
Ensure your entire React application is wrapped by `StyletronProvider` and that you pass a valid `styletron-engine` instance (e.g., `new Client()`) to its `value` prop. Verify there are no duplicate `styletron-react` packages in your dependency tree.
This warning indicates that Styletron's prop filtering is working as intended. Ensure that `$somePropName` is only used for styling or internal logic within your styled component or hook, and is not passed explicitly to the underlying DOM element. If you see this, it implies React did not recognize the prop you intended to filter.