docs: function copy(from, to, filename = '') {
      return __awaiter(this, void 0, void 0, function* () {
          private_1.checkFolder(fs, to);
          if (fs.statSync(from).isDirectory()) {
              return private_1.copyFolder(fs, from, to);
          }
          else {
              return private_1.copyFile(fs, from, to + '/' + (filename || from.split('/').reverse()[0]));
          }
      });
  }