function switchMap(project, resultSelector) {
if (typeof resultSelector === 'function') {
return function (source) { return source.pipe(switchMap(function (a, i) { return from_1.from(project(a, i)).pipe(map_1.map(function (b, ii) { return resultSelector(a, b, i, ii); })); })); };
function switchMap(project, resultSelector) {
if (typeof resultSelector === 'function') {
return function (source) { return source.pipe(switchMap(function (a, i) { return from_1.from(project(a, i)).pipe(map_1.map(function (b, ii) { return resultSelector(a, b, i, ii); })); })); };