80 lines
3.2 KiB
JavaScript
80 lines
3.2 KiB
JavaScript
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import { __read, __spreadArray } from "tslib";
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import { from } from '../observable/from';
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import { take } from '../operators/take';
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import { Subject } from '../Subject';
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import { SafeSubscriber } from '../Subscriber';
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import { operate } from '../util/lift';
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export function share(options) {
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if (options === void 0) { options = {}; }
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var _a = options.connector, connector = _a === void 0 ? function () { return new Subject(); } : _a, _b = options.resetOnError, resetOnError = _b === void 0 ? true : _b, _c = options.resetOnComplete, resetOnComplete = _c === void 0 ? true : _c, _d = options.resetOnRefCountZero, resetOnRefCountZero = _d === void 0 ? true : _d;
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return function (wrapperSource) {
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var connection = null;
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var resetConnection = null;
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var subject = null;
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var refCount = 0;
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var hasCompleted = false;
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var hasErrored = false;
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var cancelReset = function () {
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resetConnection === null || resetConnection === void 0 ? void 0 : resetConnection.unsubscribe();
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resetConnection = null;
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};
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var reset = function () {
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cancelReset();
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connection = subject = null;
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hasCompleted = hasErrored = false;
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};
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var resetAndUnsubscribe = function () {
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var conn = connection;
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reset();
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conn === null || conn === void 0 ? void 0 : conn.unsubscribe();
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};
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return operate(function (source, subscriber) {
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refCount++;
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if (!hasErrored && !hasCompleted) {
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cancelReset();
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}
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var dest = (subject = subject !== null && subject !== void 0 ? subject : connector());
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subscriber.add(function () {
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refCount--;
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if (refCount === 0 && !hasErrored && !hasCompleted) {
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resetConnection = handleReset(resetAndUnsubscribe, resetOnRefCountZero);
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}
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});
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dest.subscribe(subscriber);
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if (!connection) {
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connection = new SafeSubscriber({
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next: function (value) { return dest.next(value); },
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error: function (err) {
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hasErrored = true;
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cancelReset();
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resetConnection = handleReset(reset, resetOnError, err);
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dest.error(err);
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},
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complete: function () {
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hasCompleted = true;
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cancelReset();
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resetConnection = handleReset(reset, resetOnComplete);
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dest.complete();
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},
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});
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from(source).subscribe(connection);
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}
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})(wrapperSource);
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};
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}
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function handleReset(reset, on) {
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var args = [];
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for (var _i = 2; _i < arguments.length; _i++) {
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args[_i - 2] = arguments[_i];
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}
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if (on === true) {
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reset();
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return null;
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}
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if (on === false) {
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return null;
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}
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return on.apply(void 0, __spreadArray([], __read(args))).pipe(take(1))
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.subscribe(function () { return reset(); });
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}
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//# sourceMappingURL=share.js.map
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