Add web front-end and fix API issues

node_modules/rxjs/dist/cjs/internal/operators/startWith.js

@@ -0,0 +1,18 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.startWith = void 0;
+var concat_1 = require("../observable/concat");
+var args_1 = require("../util/args");
+var lift_1 = require("../util/lift");
+function startWith() {
+    var values = [];
+    for (var _i = 0; _i < arguments.length; _i++) {
+        values[_i] = arguments[_i];
+    }
+    var scheduler = args_1.popScheduler(values);
+    return lift_1.operate(function (source, subscriber) {
+        (scheduler ? concat_1.concat(values, source, scheduler) : concat_1.concat(values, source)).subscribe(subscriber);
+    });
+}
+exports.startWith = startWith;
+//# sourceMappingURL=startWith.js.map