1 line
2.6 KiB
JSON
1 line
2.6 KiB
JSON
{"ast":null,"code":"import { Observable } from '../Observable';\nimport { innerFrom } from '../observable/innerFrom';\nimport { Subject } from '../Subject';\nimport { operate } from '../util/lift';\nimport { createOperatorSubscriber, OperatorSubscriber } from './OperatorSubscriber';\nexport function groupBy(keySelector, elementOrOptions, duration, connector) {\n return operate((source, subscriber) => {\n let element;\n if (!elementOrOptions || typeof elementOrOptions === 'function') {\n element = elementOrOptions;\n } else {\n ({\n duration,\n element,\n connector\n } = elementOrOptions);\n }\n const groups = new Map();\n const notify = cb => {\n groups.forEach(cb);\n cb(subscriber);\n };\n const handleError = err => notify(consumer => consumer.error(err));\n let activeGroups = 0;\n let teardownAttempted = false;\n const groupBySourceSubscriber = new OperatorSubscriber(subscriber, value => {\n try {\n const key = keySelector(value);\n let group = groups.get(key);\n if (!group) {\n groups.set(key, group = connector ? connector() : new Subject());\n const grouped = createGroupedObservable(key, group);\n subscriber.next(grouped);\n if (duration) {\n const durationSubscriber = createOperatorSubscriber(group, () => {\n group.complete();\n durationSubscriber === null || durationSubscriber === void 0 ? void 0 : durationSubscriber.unsubscribe();\n }, undefined, undefined, () => groups.delete(key));\n groupBySourceSubscriber.add(innerFrom(duration(grouped)).subscribe(durationSubscriber));\n }\n }\n group.next(element ? element(value) : value);\n } catch (err) {\n handleError(err);\n }\n }, () => notify(consumer => consumer.complete()), handleError, () => groups.clear(), () => {\n teardownAttempted = true;\n return activeGroups === 0;\n });\n source.subscribe(groupBySourceSubscriber);\n function createGroupedObservable(key, groupSubject) {\n const result = new Observable(groupSubscriber => {\n activeGroups++;\n const innerSub = groupSubject.subscribe(groupSubscriber);\n return () => {\n innerSub.unsubscribe();\n --activeGroups === 0 && teardownAttempted && groupBySourceSubscriber.unsubscribe();\n };\n });\n result.key = key;\n return result;\n }\n });\n}\n//# sourceMappingURL=groupBy.js.map","map":null,"metadata":{},"sourceType":"module","externalDependencies":[]} |