code: function (content) {
          return Array.isArray(content)
              ? removeFromLines_(content.concat())
              : removeFromText_(content);
  
          function removeFromLines_(lines) {
              if (split(lines[lines.length - 1]).sourceMap) {
                  lines.pop();
              }
              return lines;
          }
  
          function removeFromText_(text) {
              return split(text).content;
          }
      }
docs: Remove last line if it starts with '//# sourceMappingURL='
  @param {String|String[]} content
  @return {String|String[]} content without sourcemap string