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i < len && !destination.closed; i++) {\n destination.next(result[i]);\n }\n if (!destination.closed) {\n destination.complete();\n }\n } else if (isPromise(result)) {\n result.then(\n (value) => {\n if (!destination.closed) {\n destination.next(<any>value);\n destination.complete();\n }\n },\n (err: any) => destination.error(err)\n )\n .then(null, (err: any) => {\n // Escaping the Promise trap: globally throw unhandled errors\n root.setTimeout(() => { throw err; });\n });\n return destination;\n } else if (result && typeof result[Symbol_iterator] === 'function') {\n const iterator = <any>result[Symbol_iterator]();\n do {\n let item = iterator.next();\n if (item.done) {\n destination.complete();\n break;\n }\n destination.next(item.value);\n if (destination.closed) {\n break;\n }\n } while (true);\n } else if (result && typeof result[Symbol_observable] === 'function') {\n const obs = result[Symbol_observable]();\n if (typeof obs.subscribe !== 'function') {\n destination.error(new TypeError('Provided object does not correctly implement Symbol.observable'));\n } else {\n return obs.subscribe(new InnerSubscriber(outerSubscriber, outerValue, outerIndex));\n }\n } else {\n const value = isObject(result) ? 'an invalid object' : `'${result}'`;\n const msg = `You provided ${value} where a stream was expected.`\n + ' You can provide an Observable, Promise, Array, or Iterable.';\n destination.error(new TypeError(msg));\n }\n return null;\n}\n"]}
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