code: function typePaths(config) {
    var out = [
        "node_modules/@types",
    ];
    var paths = (config.compilerOptions && config.compilerOptions.paths) || {};
    Object.keys(paths).forEach( function eachEntry(k) {
      // paths may contain a /*, eliminate it
      paths[k].forEach(function eachPath(a) {
        var p = a.split("/\*")[0];
        if (out.indexOf(p) < 0) {
          out.push(p);
        }
      });
    });
    debug("type paths", out);
    return out;
  }
docs: Return the paths which contain type information.