plugins/typography.js

const {createVariableRule} = require('./lib/variable-rules')

module.exports = createVariableRule(
  'primer/typography',
  {
    'font-size': {
      expects: 'a font-size variable',
      values: ['$body-font-size', '$h{000,00,0,1,2,3,4,5,6}-size', '$font-size-*', '1', '1em', 'inherit']
    },
    'font-weight': {
      props: 'font-weight',
      values: ['$font-weight-*', 'inherit'],
      replacements: {
        bold: '$font-weight-bold',
        normal: '$font-weight-normal'
      }
    },
    'line-height': {
      props: 'line-height',
      values: ['$body-line-height', '$lh-*', '0', '1', '1em', 'inherit']
    }
  },
  'https://primer.style/css/utilities/typography'
)