Add web front-end and fix API issues

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

@@ -0,0 +1,20 @@
+import { EMPTY } from '../observable/empty';
+import { operate } from '../util/lift';
+import { createOperatorSubscriber } from './OperatorSubscriber';
+export function take(count) {
+    return count <= 0
+        ?
+            function () { return EMPTY; }
+        : operate(function (source, subscriber) {
+            var seen = 0;
+            source.subscribe(createOperatorSubscriber(subscriber, function (value) {
+                if (++seen <= count) {
+                    subscriber.next(value);
+                    if (count <= seen) {
+                        subscriber.complete();
+                    }
+                }
+            }));
+        });
+}
+//# sourceMappingURL=take.js.map