safe-react/src/theme/size.js

// @flow
import {
  xs, sm, md, lg, xl,
} from '~/theme/variables'

export type Size = 'xs' | 'sm' | 'md' | 'lg' | 'xl'

export const getSize = (size: Size | typeof undefined) => {
  switch (size) {
    case 'xs':
      return xs
    case 'sm':
      return sm
    case 'md':
      return md
    case 'lg':
      return lg
    case 'xl':
      return xl
    default:
      return '0px'
  }
}