code: function mergeMapTo(innerObservable, resultSelector, concurrent) {
      if (concurrent === void 0) {
          concurrent = Number.POSITIVE_INFINITY;
      }
      if (typeof resultSelector === 'function') {
          return Object(_mergeMap__WEBPACK_IMPORTED_MODULE_0__["mergeMap"])(function () { return innerObservable; }, resultSelector, concurrent);
      }
      if (typeof resultSelector === 'number') {
          concurrent = resultSelector;
      }
      return Object(_mergeMap__WEBPACK_IMPORTED_MODULE_0__["mergeMap"])(function () { return innerObservable; }, concurrent);
  }
docs: PURE_IMPORTS_START _mergeMap PURE_IMPORTS_END