code: function resolveEnvSources(env) {
    let paths = [];
  
    if (process.env[env]) {
      paths = process.env[env].includes(path.delimiter) ? process.env[env].split(path.delimiter) : [process.env[env]];
    }
  
    return paths;
  }
docs: Resolve environment variable sources for 'env'
  @param {String} env
  @returns {Array}