@css-system/gatsby-plugin-css-system

gatsby-plugin-css-system

Getting started

You can download gatsby-plugin-css-system from the NPM registry via the npm or yarn commands

yarn add @css-system/gatsby-plugin-css-system
# OR
npm install @css-system/gatsby-plugin-css-system --save

Usage

Add the plugin in your gatsby-config.js file with a theme object following the theme ui specifications:

module.exports = {
  plugins: [
    {
      resolve: "@css-system/gatsby-plugin-css-system",
      options: {
        theme: {
          breakpoints: {
            s: "40em",
            m: "52em",
            l: "64em"
          },
          space: [0, 4, 8, 16, 32],
          fontSizes: [12, 14, 16, 20, 24],
          colors: {
            // your colors
          }
        }
      }
    }
  ]
};

It also provide support for multiple themes

module.exports = {
  plugins: [
    {
      resolve: "@css-system/gatsby-plugin-css-system",
      options: {
        defaultTheme: "light",
        themes: {
          light: {
            breakpoints: {
              s: "40em",
              m: "52em",
              l: "64em"
            },
            space: [0, 4, 8, 16, 32],
            fontSizes: [12, 14, 16, 20, 24],
             colors: {
              background: 'white'
              text: 'black'
            }
          },
          dark: {
            breakpoints: {
              s: "40em",
              m: "52em",
              l: "64em"
            },
            space: [0, 4, 8, 16, 32],
            fontSizes: [12, 14, 16, 20, 24],
            colors: {
              background: 'black'
              text: 'white'
            }
          }
        } {

        }
      }
    }
  ]
};
// You can then create a toggler component like this in your application
import {useSwitchTheme} from "@css-system/gatsby-plugin-css-system"

export const ToggleDarkThemeButton = () => {
  const [themeKey, switchTheme] = useSwitchTheme()

  const handleToggleDarkMode = () => switchTheme(themeKey === "dark" ? "light" : "dark")

  return <button onClick={handleToggleDarkMode}>{themeKey === "dark" ? "🌞" : "🌛"}</button>
}

For advanced configuration, please checkout documentation