/**
 * 750 设计宽：在 375px 视口下 1rpx = 0.5px
 */
function rpx750() {
  return {
    postcssPlugin: 'rpx-750',
    Once(root) {
      root.walkDecls((decl) => {
        if (!decl.value || !decl.value.includes('rpx')) return
        decl.value = decl.value.replace(
          /(\d+(?:\.\d+)?)rpx/g,
          (_m, n) => {
            const px = parseFloat(n) * 0.5
            const s = Number.isInteger(px)
              ? String(px)
              : px
                  .toFixed(3)
                  .replace(/\.?0+$/, '')
            return `${s}px`
          }
        )
      })
    },
  }
}
rpx750.postcss = true
module.exports = rpx750