Add web front-end and fix API issues

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

@@ -0,0 +1,13 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.delay = void 0;
+var async_1 = require("../scheduler/async");
+var delayWhen_1 = require("./delayWhen");
+var timer_1 = require("../observable/timer");
+function delay(due, scheduler) {
+    if (scheduler === void 0) { scheduler = async_1.asyncScheduler; }
+    var duration = timer_1.timer(due, scheduler);
+    return delayWhen_1.delayWhen(function () { return duration; });
+}
+exports.delay = delay;
+//# sourceMappingURL=delay.js.map