Add web front-end and fix API issues

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

@@ -0,0 +1,19 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.delayWhen = void 0;
+var concat_1 = require("../observable/concat");
+var take_1 = require("./take");
+var ignoreElements_1 = require("./ignoreElements");
+var mapTo_1 = require("./mapTo");
+var mergeMap_1 = require("./mergeMap");
+var innerFrom_1 = require("../observable/innerFrom");
+function delayWhen(delayDurationSelector, subscriptionDelay) {
+    if (subscriptionDelay) {
+        return function (source) {
+            return concat_1.concat(subscriptionDelay.pipe(take_1.take(1), ignoreElements_1.ignoreElements()), source.pipe(delayWhen(delayDurationSelector)));
+        };
+    }
+    return mergeMap_1.mergeMap(function (value, index) { return innerFrom_1.innerFrom(delayDurationSelector(value, index)).pipe(take_1.take(1), mapTo_1.mapTo(value)); });
+}
+exports.delayWhen = delayWhen;
+//# sourceMappingURL=delayWhen.js.map