How to import SASS syntax into PostCSS?

Question

Sass

Hello. I have a build using webpack + postcss. And it works fine with SCSS syntax
Here is a part of the code from the postcss settings

module.exports = {
  syntax: "postcss-scss",
  parser: 'postcss-scss',
  plugins: [
    require("postcss-easy-import")({
      extensions: ".pcss"
    }),

But I want to switch to SASS syntax, I change the settings to postcss-sAss. And everything works as it did, the sass syntax compiles to css, but the import of files stops working, that is, the postcss-easy-import module does not want to include files with SASS syntax, but includes the same files without problems in the SCSS syntax. I have returned to this question several times, but I still can't find a solution that would work with sass syntax.
Perhaps someone can help with this!