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

Five possible solutions:

  1. Delete node_modules

    rm -fr node_modules
  2. Update

    npm update node-sass
  3. Rebuild

    npm rebuild node-sass
  4. Uninstall and install

    npm uninstall node-sass && npm install node-sass
  5. package.json

    "sass-loader": "^7.1.0"