"Original" argument must be of type Function. Received type undefined about grunt-sass

[tobsn-me]

I ran into this error, too. To fix this, follow these steps:

1. Add node-sass to your project

   $ npm i node-sass --save-dev

2. Include node-sass in your Gruntfile

   const sass = require('node-sass');

3. In your sass options, change the following line

   from

   implementation: 'sass-dist'

   to

   implementation: sass

[JonMcL]

If anyone ends up here and can't figure it out, this might help ---

I accidentally (stupidly?) had the 'implementation' argument as a string, so change

implementation: 'sass'

to

implemenation: sass

This of course depends on the

const sass = require('node-sass');

line to populate the sass object.

[Suriv]

Look at the grungfile of the project, this is the key.

https://github.com/sindresorhus/grunt-sass/blob/master/gruntfile.js

The new version needs Node 8 or higher