jsvars-loader

webpack loader for postcss for sharing style variables in both JS and CSS. Depends on postcss-simple-vars.

This loader allows you to define CSS styles in a common place, and then use those styles in both your JavaScript and your CSS.

Setup

Install this webpack loader:

npm install jsvars-loader --save

Configure webpack to use this loader first thing (before postcss) when loading CSS files:

module: {
    loaders: [
      { test: /\.css$/, loader: "postcss-loader!jsvars-loader" }
    ]
  }

Make sure you've got the postcss-simple-vars plugin enabled in your webpack config:

postcss: [
    require('postcss-simple-vars')
  ]

Create a JS file with some styles you'd like to reuse:

module.exports = {
  layout: {
    list: {
      width: '330',
      spacing: '10'
    }
  },
  color: {
    list: {
      background: 'rgba(255,255,255,1)'
    }
  }
};

From the JS side of things you can simply require this file and use it.

From your CSS you "import" these variables by calling jsvars(<path to your vars file>). You can then use these variables in your CSS with the $(<variable name>) syntax:

jsvars(common/styles.js)

.list{
  width: $(layout-list-width)px;
  background: $(color-list-background);
}

Deeply nested style properties are accessed by using dashes e.g. layout-list-width.

License: MIT