Webpack build fails with sass loader

[sc0rp1on]

options has an unknown property 'importer'. These properties are valid:
object { implementation?, sassOptions?, prependData?, sourceMap?, webpackImporter? }

I'm guessing the documentation is old.
Can this be updated please?

[sc0rp1on]

{
loader: "sass-loader",
options: {
webpackImporter: false,
sassOptions: {
importer: jsonImporter()
}
}

Works with this!