Add web front-end and fix API issues

node_modules/rxjs/dist/cjs/internal/observable/from.js

@@ -0,0 +1,10 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.from = void 0;
+var scheduled_1 = require("../scheduled/scheduled");
+var innerFrom_1 = require("./innerFrom");
+function from(input, scheduler) {
+    return scheduler ? scheduled_1.scheduled(input, scheduler) : innerFrom_1.innerFrom(input);
+}
+exports.from = from;
+//# sourceMappingURL=from.js.map