initial commit: scaffolding

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diff --git a/node_modules/rxjs/src/internal/operators/publishBehavior.ts b/node_modules/rxjs/src/internal/operators/publishBehavior.ts
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+import { Observable } from '../Observable';
+import { BehaviorSubject } from '../BehaviorSubject';
+import { ConnectableObservable } from '../observable/ConnectableObservable';
+import { UnaryFunction } from '../types';
+
+/**
+ * Creates a {@link ConnectableObservable} that utilizes a {@link BehaviorSubject}.
+ *
+ * @param initialValue The initial value passed to the {@link BehaviorSubject}.
+ * @return A function that returns a {@link ConnectableObservable}
+ * @deprecated Will be removed in v8. To create a connectable observable that uses a
+ * {@link BehaviorSubject} under the hood, use {@link connectable}.
+ * `source.pipe(publishBehavior(initValue))` is equivalent to
+ * `connectable(source, { connector: () => new BehaviorSubject(initValue), resetOnDisconnect: false })`.
+ * If you're using {@link refCount} after `publishBehavior`, use the {@link share} operator instead.
+ * `source.pipe(publishBehavior(initValue), refCount())` is equivalent to
+ * `source.pipe(share({ connector: () => new BehaviorSubject(initValue), resetOnError: false, resetOnComplete: false, resetOnRefCountZero: false  }))`.
+ * Details: https://rxjs.dev/deprecations/multicasting
+ */
+export function publishBehavior<T>(initialValue: T): UnaryFunction<Observable<T>, ConnectableObservable<T>> {
+  // Note that this has *never* supported the selector function.
+  return (source) => {
+    const subject = new BehaviorSubject<T>(initialValue);
+    return new ConnectableObservable(source, () => subject);
+  };
+}