@ustyle/css

STATUS: Moved to @slimr/css

A tiny alternative to the popular emotion library

Demos: See ./packages/demo or CodeSandbox

Sister libs:

• @ustyle/styled

Pros:

• Much less bundle size

• Less is more: faster, less bugs, no breaking changes

• Is progressive -- lazy loads styles along with component if component is lazy

• Css shorthand props like chakra-ui:

  • m --> margin
  • mx --> margin-left and bottom
  • py --> padding-top and bottom
  • More here!

• CSS Breakpoints shorthand like chakra-ui:

  margin: [auto, null, inherit];
  /* Translates to */
  margin: auto;
  @media (min-width: 48em) {
    margin: inherit;
  }

  • Breakpoints are [30em, 48em, 62em, 80em, 96em]

Cons:

• No SSR support

Setup/Install

npm i @ustyle/css

Usage

// Add some global styles
addCss`
  body {
    color: lightgray;
  }
`

export function App() {
  const on = useOn()

  return (
    <div
      className={css`
        background: white;
        color: ${on ? 'red' : 'initial'};
        &:hover {
          font-weight: bold;
        }
        font-size: [20px, null, 16px];
      `}
    >
      Helo css!
    </div>
  )
}

Comparisons

Emotion

• A popular css-in-js lib that inspired this lib

Pros

• More mature, SSR support

Cons

• Is huge (>10kb)
• Many features require addons, which make bundle even larger
• Does not support zx prop or css shorthand props

Astroturf

• A popular css-in-js lib similar to Emotion but compiles out the css into css stylesheets

Pros

• More performant (zero kbs, no need for caching or Map lookups)
• Support for all the PostCSS magic you may desire

Cons

• Requires babel/bundler config
• Does not support zx prop or css shorthand props
• Is not progressive -- all styles for all components is loaded and blocks initial page paint

Linaria

• Pretty much identical to Astroturf, but maybe better Vite support