Node Sass does not yet support your current environment: Windows 64-bit with Unsupported runtime (88)

Thanks to jonrsharpe.

Worked for me:

1. install / downgrade node.js to a stable version (LTS) like 14.15.0
2. install the compatible node-sass version via npm install [email protected]; you can find the list here, or even install gulp-sasswith npm i gulp-sass --save-dev.

direct link to list

Warning: LibSass and Node Sass are deprecated. While they will continue to receive maintenance releases indefinitely, there are no plans to add additional features or compatibility with any new CSS or Sass features. Projects that still use it should move onto Dart Sass.

the node-sass package is deprecated.

Instead install sass instead like this:

yarn add sass -D
# or
npm i sass --save-dev

I ran to the same problem and I found that the best solution is to use gulp-dart-sass. You won't need to downgrade your Node.js(I'm using it with Node version: v15.3.0 right now)

Simple replace gulp-sass to gulp-dart-sass