JSS plugin for classes composition
This plugin allows you to use CSS frameworks and legacy code together with JSS as well as reuse Rules more granularly.
Make sure you read how to use plugins in general.
Compose with global classes.
To combine JSS with CSS framework like Material Design Lite or Bootstrap and others.
const styles = button: // Using space separated class names. composes: 'btn btn-primary' color: 'red' buttonActive: // Using an array of class names. composes: 'btn' 'btn-primary' color: 'blue'
Compiles to:
When you use it:
<button className=classesbutton>Button</button><button className=classesbuttonActive>Active Button</button>
It renders to:
ButtonActive Button
Compose with local classes.
Manage element states without rules duplication.
To reference a local rule, prefix the rule name with $
symbol.
const styles = button: color: 'black' // You can chain compositions buttonActive: composes: '$button' color: 'red' buttonActiveDisabled: composes: '$buttonActive' opacity: 05 // Or use arrays disabled: opacity: 05 active: color: 'red' buttonDisabled: composes: '$button' '$active' '$disabled'
Compiles to:
/* Rule `buttonDisabled` is not compiled to CSS, because it has no own properties. */
When you use it:
<button className=classesbuttonActiveDisabled>Active Disabled Button</button><button className=classesbuttonDisabled>Disabled Button with active state</button>
It renders to:
Active Disabled ButtonDisabled Button with active state
Mix global and local classes.
You can compose both local and global classes at the same time.
const styles = active: color: 'red' button: composes: '$active' 'btn' 'btn-primary' color: 'blue'
Compiles to:
When you use it:
<button className=classesbutton>Button</button>
It renders to:
Button
Caveats
- Doesn't work within global Style Sheets.
- Does not work inside of nested rules.
- When composing local rules, they need to be defined first. Otherwise you get wrong css selector order and specificity.
Issues
File a bug against cssinjs/jss prefixed with [jss-compose].
Run tests
npm inpm test
License
MIT