Add web front-end and fix API issues

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

@@ -0,0 +1,15 @@
+export const intervalProvider = {
+    setInterval(handler, timeout, ...args) {
+        const { delegate } = intervalProvider;
+        if (delegate === null || delegate === void 0 ? void 0 : delegate.setInterval) {
+            return delegate.setInterval(handler, timeout, ...args);
+        }
+        return setInterval(handler, timeout, ...args);
+    },
+    clearInterval(handle) {
+        const { delegate } = intervalProvider;
+        return ((delegate === null || delegate === void 0 ? void 0 : delegate.clearInterval) || clearInterval)(handle);
+    },
+    delegate: undefined,
+};
+//# sourceMappingURL=intervalProvider.js.map