tailwind.config.js

// Must remain a CommonJS file (not ESM or TS)

const defaultTheme = require('tailwindcss/defaultTheme')
const colors = require('tailwindcss/colors')

module.exports = {
  darkMode: 'class',
  purge: [
    './components/**/*.{js,ts,tsx}',
    './layouts/**/*.{.js,ts,tsx}',
    './pages/**/*.{js,ts,tsx}',
  ],
  theme: {
    colors: {
      ...defaultTheme.colors,
      gray: colors.gray,
    },
    extend: {
      fontFamily: {
        sans: [
          'Inter',
          '-apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"',
        ],
      },
      height: {
        '1em': '1em',
      },
      lineHeight: {
        0: '0',
      },
      width: {
        '1em': '1em',
      },
      zIndex: {
        '-1': '-1',
      },
      typography: theme => ({
        DEFAULT: {
          css: {
            color: theme('colors.gray.700'),
            a: {
              color: theme('colors.blue.500'),
              '&:hover': {
                color: theme('colors.blue.700'),
              },
              code: { color: theme('colors.blue.400') },
            },
            code: {
              '&::before': { content: '""' },
              '&::after': { content: '""' },
            },
            'blockquote p:first-of-type::before': false,
            'blockquote p:last-of-type::after': false,
          },
        },
        dark: {
          css: {
            color: theme('colors.gray.300'),
            a: {
              color: theme('colors.blue.400'),
              '&:hover': {
                color: theme('colors.blue.600'),
              },
              code: { color: theme('colors.blue.400') },
            },
            pre: {
              backgroundColor: theme('colors.gray.900'),
            },
            code: {
              '&::before': { content: '""' },
              '&::after': { content: '""' },
            },
            blockquote: {
              borderLeftColor: theme('colors.pink.500'),
              color: theme('colors.gray.300'),
            },
            'h2,h3,h4': {
              color: theme('colors.gray.200'),
            },
            hr: { borderColor: theme('colors.gray.700') },
            ol: {
              li: {
                '&:before': { color: theme('colors.gray.500') },
              },
            },
            ul: {
              li: {
                '&:before': { backgroundColor: theme('colors.gray.500') },
              },
            },
            strong: { color: theme('colors.gray.200') },
            thead: {
              color: theme('colors.gray.100'),
            },
            tbody: {
              tr: {
                borderBottomColor: theme('colors.gray.700'),
              },
            },
          },
        },
      }),
    },
  },
  variants: {
    extend: {
      backgroundOpacity: ['dark'],
    },
    typography: ['dark'],
  },
  plugins: [require('@tailwindcss/typography')],
}