umi3x配置postcss-px-to-viewport根据路径设置视窗宽高

[sujxia]

若是读取的是antd-mobile相关的文件，viewportWidth就设为375，若是其余的文件，按照UI的宽度来设置viewportWidth为750
但在配置里如何获取路径判断viewportWidth?

extraPostCSSPlugins: [
    pxToViewPort({
      viewportWidth: 375,
      viewportHeight: 667,
      unitPrecision: 5,
      viewportUnit: 'vw',
      selectorBlackList: [],
      propList: ["*","!letter-spacing"],
      minPixelValue: 1,
      mediaQuery: true,
    }),
  ]