Module build failed: Error: Node Sass does not yet support your current environment: OS X 64-bit with Unsupported runtime (59)

[WebTerminator]

I have the following package.json file:

{
  "name": "react-chart",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "webpack-dev-server"
  },
  "author": "Alessandro Santese",
  "license": "ISC",
  "dependencies": {
    "html-webpack-plugin": "^2.30.1",
    "node-sass": "^4.6.0",
    "react": "^16.0.0",
    "react-dom": "^16.0.0",
    "react-easy-chart": "^0.3.0",
    "recharts": "^1.0.0-beta.0",
    "webpack": "^3.8.1",
    "webpack-dev-server": "^2.9.4"
  },
  "devDependencies": {
    "babel-plugin-transform-class-properties": "^6.24.1",
    "babel-plugin-transform-object-rest-spread": "^6.26.0"
  }
}

when I run "npm run start" I get:

[WebTerminator]

Had to do the following:

sudo npm cache clean -f
sudo npm install -g n
sudo n 6.0.0

[Wolf00Bomber]

The above fix was not able to solve my case:

>npm install -g n
npm ERR! code EBADPLATFORM
npm ERR! notsup Unsupported platform for n@2.1.8: wanted {"os":"!win32","arch":"any"} (current: {"os":"win32","arch":"x64"})
npm ERR! notsup Valid OS:    !win32
npm ERR! notsup Valid Arch:  any
npm ERR! notsup Actual OS:   win32
npm ERR! notsup Actual Arch: x64

So after going through the Web, found another site where i was suggested to downgrade the Node version from 9.2.0 to the Stable version 8.9.1.

And remove the Node Packages and install npm again inside the folder.

Which worked for me.

[marcvangend]

Downgrading Node may not be necessary. I had the same error (albeit on Linux: "Node Sass does not yet support your current environment: Linux 64-bit with Unsupported runtime (59)") running node-sass 4.5.3, installed as dependency of gulp-sass. A regular npm update will only check the top-level packages, but after running npm --depth 9999 update, node-sass was updated to 4.7.2 and the problem was solved.