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PostCSS-RTL

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PostCSS-plugin for RTL-adaptivity

Generates RTL rules with flipped properties. Use one file for both directions!

Example:

This:

.foo {
    float: right;
    margin-left: 13px;
    text-align: right;
    font-size: 13px;
    border-color: lightgray;
    border-width: 2px 0 2px 2px;
    border-style: solid dashed solid solid
}

.foo {
    text-align: center;
}

Converts to:

.foo {
    font-size: 13px
}

[dir] .foo {
    border-color: lightgray
}

[dir="ltr"] .foo {
    float: right;
    margin-left: 13px;
    text-align: right;
    border-width: 2px 0 2px 2px;
    border-style: solid dashed solid solid
}

[dir="rtl"] .foo {
    float: left;
    margin-right: 13px;
    text-align: left;
    border-width: 2px 2px 2px 0;
    border-style: solid solid solid dashed
}

[dir] .foo {
    text-align: center
}

This:

.foo {
    animation: 1s slide 0s ease-in-out
}

@keyframes slide {
    from {
        transform: translate( -1000px )
    }
    to {
        transform: translate( 0 )
    }
}

Converts to:

[dir="ltr"] .foo {
    animation: 1s slide-ltr 0s ease-in-out
}

[dir="rtl"] .foo {
    animation: 1s slide-rtl 0s ease-in-out
}

@keyframes slide-ltr {
    from {
        transform: translate( -1000px )
    }
    to {
        transform: translate( 0 )
    }
}

@keyframes slide-rtl {
    from {
        transform: translate( 1000px )
    }
    to {
        transform: translate( 0 )
    }
}

Usage

Just plug it to PostCSS:

const postcss = require('postcss')
const rtl = require('postcss-rtl')
 
postcss([ rtl( options ) ])
      

See PostCSS docs for examples for your environment.

With Gulp:

gulp.src( 'style.css' )
    .pipe( postcss( [ rtl( options ) ]) )
    .pipe( gulp.dest( './dest' ) )

With Webpack:

module.exports = {
  module: {
    rules: [ {
      test: /\.css$/,
      use: [
        { loader: 'style-loader' },
        { loader: 'css-loader' },
        { loader: 'postcss-loader',
          options: {
            plugins: function () {
              return [ require( 'postcss-rtl' )( options ) ]
            }
          }  
        }
      ]
    } ]
  }
}

Options

  • addPrefixToSelector: Custom function for adding prefix to selector. Optional. Example:

    function addPrefixToSelector ( selector, prefix ) {
        return `${prefix} > ${selector}` // Make selectors like [dir=rtl] > .selector
    }
  • prefixType: Switches between adding attrinbutes and classes. Optional:

    • attribute (by default, recommended): .foo => [dir=rtl] .foo
    • class (useful for IE6): .foo => .dir-rtl .foo

Future

Thanks

Great thanks to projects: