UEA-Prodem

node_modules/@trpc/server/dist/observable-UMO3vUa_.mjs

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+//#region src/observable/observable.ts
+/** @public */
+function isObservable(x) {
+	return typeof x === "object" && x !== null && "subscribe" in x;
+}
+/** @public */
+function observable(subscribe) {
+	const self = {
+		subscribe(observer) {
+			let teardownRef = null;
+			let isDone = false;
+			let unsubscribed = false;
+			let teardownImmediately = false;
+			function unsubscribe() {
+				if (teardownRef === null) {
+					teardownImmediately = true;
+					return;
+				}
+				if (unsubscribed) return;
+				unsubscribed = true;
+				if (typeof teardownRef === "function") teardownRef();
+				else if (teardownRef) teardownRef.unsubscribe();
+			}
+			teardownRef = subscribe({
+				next(value) {
+					var _observer$next;
+					if (isDone) return;
+					(_observer$next = observer.next) === null || _observer$next === void 0 || _observer$next.call(observer, value);
+				},
+				error(err) {
+					var _observer$error;
+					if (isDone) return;
+					isDone = true;
+					(_observer$error = observer.error) === null || _observer$error === void 0 || _observer$error.call(observer, err);
+					unsubscribe();
+				},
+				complete() {
+					var _observer$complete;
+					if (isDone) return;
+					isDone = true;
+					(_observer$complete = observer.complete) === null || _observer$complete === void 0 || _observer$complete.call(observer);
+					unsubscribe();
+				}
+			});
+			if (teardownImmediately) unsubscribe();
+			return { unsubscribe };
+		},
+		pipe(...operations) {
+			return operations.reduce(pipeReducer, self);
+		}
+	};
+	return self;
+}
+function pipeReducer(prev, fn) {
+	return fn(prev);
+}
+/** @internal */
+function observableToPromise(observable$1) {
+	const ac = new AbortController();
+	const promise = new Promise((resolve, reject) => {
+		let isDone = false;
+		function onDone() {
+			if (isDone) return;
+			isDone = true;
+			obs$.unsubscribe();
+		}
+		ac.signal.addEventListener("abort", () => {
+			reject(ac.signal.reason);
+		});
+		const obs$ = observable$1.subscribe({
+			next(data) {
+				isDone = true;
+				resolve(data);
+				onDone();
+			},
+			error(data) {
+				reject(data);
+			},
+			complete() {
+				ac.abort();
+				onDone();
+			}
+		});
+	});
+	return promise;
+}
+/**
+* @internal
+*/
+function observableToReadableStream(observable$1, signal) {
+	let unsub = null;
+	const onAbort = () => {
+		unsub === null || unsub === void 0 || unsub.unsubscribe();
+		unsub = null;
+		signal.removeEventListener("abort", onAbort);
+	};
+	return new ReadableStream({
+		start(controller) {
+			unsub = observable$1.subscribe({
+				next(data) {
+					controller.enqueue({
+						ok: true,
+						value: data
+					});
+				},
+				error(error) {
+					controller.enqueue({
+						ok: false,
+						error
+					});
+					controller.close();
+				},
+				complete() {
+					controller.close();
+				}
+			});
+			if (signal.aborted) onAbort();
+			else signal.addEventListener("abort", onAbort, { once: true });
+		},
+		cancel() {
+			onAbort();
+		}
+	});
+}
+/** @internal */
+function observableToAsyncIterable(observable$1, signal) {
+	const stream = observableToReadableStream(observable$1, signal);
+	const reader = stream.getReader();
+	const iterator = {
+		async next() {
+			const value = await reader.read();
+			if (value.done) return {
+				value: void 0,
+				done: true
+			};
+			const { value: result } = value;
+			if (!result.ok) throw result.error;
+			return {
+				value: result.value,
+				done: false
+			};
+		},
+		async return() {
+			await reader.cancel();
+			return {
+				value: void 0,
+				done: true
+			};
+		}
+	};
+	return { [Symbol.asyncIterator]() {
+		return iterator;
+	} };
+}
+
+//#endregion
+export { isObservable, observable, observableToAsyncIterable, observableToPromise };
+//# sourceMappingURL=observable-UMO3vUa_.mjs.map