const options = {
  input: "px",
  output: "rpx",
  unitPrecision: 5,
  selectorBlackList: [],
  propBlackList: [],
  minPixelValue: 0,
  exclude: null,
  replace: true,
  transform: x => 2 * x
}

// vite.config.js
import px2px from 'postcss-px2px'

export default defineConfig({
  css:{
    postcss: {
      plugins: [px2px({
        input: "rpx",
        output: "px",
        transform: x => x / 2
      })]
    }
  }
})