Add web front-end and fix API issues

node_modules/rxjs/dist/esm5/internal/scheduler/intervalProvider.js

@@ -0,0 +1,20 @@
+import { __read, __spreadArray } from "tslib";
+export var intervalProvider = {
+    setInterval: function (handler, timeout) {
+        var args = [];
+        for (var _i = 2; _i < arguments.length; _i++) {
+            args[_i - 2] = arguments[_i];
+        }
+        var delegate = intervalProvider.delegate;
+        if (delegate === null || delegate === void 0 ? void 0 : delegate.setInterval) {
+            return delegate.setInterval.apply(delegate, __spreadArray([handler, timeout], __read(args)));
+        }
+        return setInterval.apply(void 0, __spreadArray([handler, timeout], __read(args)));
+    },
+    clearInterval: function (handle) {
+        var delegate = intervalProvider.delegate;
+        return ((delegate === null || delegate === void 0 ? void 0 : delegate.clearInterval) || clearInterval)(handle);
+    },
+    delegate: undefined,
+};
+//# sourceMappingURL=intervalProvider.js.map