initial commit: scaffolding

1 files changed, 43 insertions, 0 deletions

diff --git a/node_modules/rxjs/dist/esm/internal/operators/throttle.js b/node_modules/rxjs/dist/esm/internal/operators/throttle.js
new file mode 100644
index 0000000..704be4b
--- /dev/null
+++ b/node_modules/rxjs/dist/esm/internal/operators/throttle.js
@@ -0,0 +1,43 @@
+import { operate } from '../util/lift';
+import { createOperatorSubscriber } from './OperatorSubscriber';
+import { innerFrom } from '../observable/innerFrom';
+export function throttle(durationSelector, config) {
+    return operate((source, subscriber) => {
+        const { leading = true, trailing = false } = config !== null && config !== void 0 ? config : {};
+        let hasValue = false;
+        let sendValue = null;
+        let throttled = null;
+        let isComplete = false;
+        const endThrottling = () => {
+            throttled === null || throttled === void 0 ? void 0 : throttled.unsubscribe();
+            throttled = null;
+            if (trailing) {
+                send();
+                isComplete && subscriber.complete();
+            }
+        };
+        const cleanupThrottling = () => {
+            throttled = null;
+            isComplete && subscriber.complete();
+        };
+        const startThrottle = (value) => (throttled = innerFrom(durationSelector(value)).subscribe(createOperatorSubscriber(subscriber, endThrottling, cleanupThrottling)));
+        const send = () => {
+            if (hasValue) {
+                hasValue = false;
+                const value = sendValue;
+                sendValue = null;
+                subscriber.next(value);
+                !isComplete && startThrottle(value);
+            }
+        };
+        source.subscribe(createOperatorSubscriber(subscriber, (value) => {
+            hasValue = true;
+            sendValue = value;
+            !(throttled && !throttled.closed) && (leading ? send() : startThrottle(value));
+        }, () => {
+            isComplete = true;
+            !(trailing && hasValue && throttled && !throttled.closed) && subscriber.complete();
+        }));
+    });
+}
+//# sourceMappingURL=throttle.js.map
\ No newline at end of file