Can't make documented processor function work about rollup-plugin-sass

Tried the same thing using import postcss from 'postcss', but that didn't work either.

[brendan-jefferis]

Following on from that, I changed the name of the parameter style to css which fixed the above error but then got:

postcss(...).process is not a function

I'm new to postcss but I'm pretty sure it has a process function..? Full rollup config below

import sass from "rollup-plugin-sass";
import postcss from "rollup-plugin-postcss";

export default {
    entry: "src/app.js",
    format: "cjs",
    dest: "dist/app.js",
    format: "iife",
    sourceMap: true,
    plugins: [
        sass({
            output: "dist/app.css",
            processor(css) {
                return postcss([ require("autoprefixer") ])
                    .process(css)
                    .then(result => result.css)
                }
            })
    ]
}

[nathancahill]

Posted on SO, but posting here for future. Here is my working config:

import sass from 'rollup-plugin-sass'
import autoprefixer from 'autoprefixer'
import postcss from 'postcss'

sass({
    processor: css => postcss([autoprefixer])
        .process(css)
        .then(result => result.css)
})

@nathancahill got it right. Now the readme just needs updating.