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node_modules/rxjs/dist/esm5/internal/operators/distinct.js

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+import { operate } from '../util/lift';
+import { createOperatorSubscriber } from './OperatorSubscriber';
+import { noop } from '../util/noop';
+import { innerFrom } from '../observable/innerFrom';
+export function distinct(keySelector, flushes) {
+    return operate(function (source, subscriber) {
+        var distinctKeys = new Set();
+        source.subscribe(createOperatorSubscriber(subscriber, function (value) {
+            var key = keySelector ? keySelector(value) : value;
+            if (!distinctKeys.has(key)) {
+                distinctKeys.add(key);
+                subscriber.next(value);
+            }
+        }));
+        flushes && innerFrom(flushes).subscribe(createOperatorSubscriber(subscriber, function () { return distinctKeys.clear(); }, noop));
+    });
+}
+//# sourceMappingURL=distinct.js.map