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- {"ast":null,"code":"import { Subscription } from '../Subscription';\nimport { OuterSubscriber } from '../OuterSubscriber';\nimport { subscribeToResult } from '../util/subscribeToResult';\nexport function bufferWhen(closingSelector) {\n return function (source) {\n return source.lift(new BufferWhenOperator(closingSelector));\n };\n}\nclass BufferWhenOperator {\n constructor(closingSelector) {\n this.closingSelector = closingSelector;\n }\n call(subscriber, source) {\n return source.subscribe(new BufferWhenSubscriber(subscriber, this.closingSelector));\n }\n}\nclass BufferWhenSubscriber extends OuterSubscriber {\n constructor(destination, closingSelector) {\n super(destination);\n this.closingSelector = closingSelector;\n this.subscribing = false;\n this.openBuffer();\n }\n _next(value) {\n this.buffer.push(value);\n }\n _complete() {\n const buffer = this.buffer;\n if (buffer) {\n this.destination.next(buffer);\n }\n super._complete();\n }\n _unsubscribe() {\n this.buffer = null;\n this.subscribing = false;\n }\n notifyNext(outerValue, innerValue, outerIndex, innerIndex, innerSub) {\n this.openBuffer();\n }\n notifyComplete() {\n if (this.subscribing) {\n this.complete();\n } else {\n this.openBuffer();\n }\n }\n openBuffer() {\n let {\n closingSubscription\n } = this;\n if (closingSubscription) {\n this.remove(closingSubscription);\n closingSubscription.unsubscribe();\n }\n const buffer = this.buffer;\n if (this.buffer) {\n this.destination.next(buffer);\n }\n this.buffer = [];\n let closingNotifier;\n try {\n const {\n closingSelector\n } = this;\n closingNotifier = closingSelector();\n } catch (err) {\n return this.error(err);\n }\n closingSubscription = new Subscription();\n this.closingSubscription = closingSubscription;\n this.add(closingSubscription);\n this.subscribing = true;\n closingSubscription.add(subscribeToResult(this, closingNotifier));\n this.subscribing = false;\n }\n}\n//# sourceMappingURL=bufferWhen.js.map","map":null,"metadata":{},"sourceType":"module","externalDependencies":[]}
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