code: function switchMap(project, resultSelector) {
      if (typeof resultSelector === 'function') {
          return function (source) { return source.pipe(switchMap(function (a, i) { return Object(_observable_from__WEBPACK_IMPORTED_MODULE_4__["from"])(project(a, i)).pipe(Object(_map__WEBPACK_IMPORTED_MODULE_3__["map"])(function (b, ii) { return resultSelector(a, b, i, ii); })); })); };
      }
      return function (source) { return source.lift(new SwitchMapOperator(project)); };
  }
docs: PURE_IMPORTS_START tslib,_OuterSubscriber,_util_subscribeToResult,_map,_observable_from PURE_IMPORTS_END