Add web front-end and fix API issues

node_modules/rxjs/dist/esm5/internal/operators/map.js

@@ -0,0 +1,11 @@
+import { operate } from '../util/lift';
+import { createOperatorSubscriber } from './OperatorSubscriber';
+export function map(project, thisArg) {
+    return operate(function (source, subscriber) {
+        var index = 0;
+        source.subscribe(createOperatorSubscriber(subscriber, function (value) {
+            subscriber.next(project.call(thisArg, value, index++));
+        }));
+    });
+}
+//# sourceMappingURL=map.js.map