sass-include-paths/lib/sassc-include-args.js

Generates include paths for node-sass for packages from popular package managers like npm, bower, ruby gem, ruby bundler.

const includeKeyShort = '-I';
module.exports = function(includePaths) {
  if(!Array.isArray(includePaths)) {
    throw Error('Argument is not an Array.');
  }
  return includePaths.map(function(includePath) {
    return includeKeyShort + ' ' + includePath;
  }).join(' ');
};