Node Sass does not yet support your current environment: OS X 64-bit with Unsupported runtime (83) For more information on which environments are supported please see: code example

Example 1: Module build failed: Error: Node Sass does not yet support your current environment: OS X 64-bit with Unsupported runtime (79)

npm rebuild node-sass

Example 2: Error: Node Sass does not yet support your current environment: Linux 64-bit with Unsupported runtime (83)

npm install --save-dev node-sass