https://github.com/vuejs/vue-next/blob/eb721d49c004abf5eff0a4e7da71bad904aa6bac/packages/compiler-sfc/src/stylePreprocessors.ts?_pjax=%23js-repo-pjax-container%2C%20div%5Bitemtype%3D%22http%3A%2F%2Fschema.org%2FSoftwareSourceCode%22%5D%20main%2C%20%5Bdata-pjax-container%5D#L36

最近在做一些关于浏览器内支持vue-sfc-loader时，scss.js 仅支持异步函数，处理到这块会出现问题，已经在源码处改了，是否要增加代码适配scss异步的情况

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