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- {"ast":null,"code":"import { Observable } from '../Observable';\nimport { isArray } from '../util/isArray';\nimport { isFunction } from '../util/isFunction';\nimport { map } from '../operators/map';\nexport function fromEventPattern(addHandler, removeHandler, resultSelector) {\n if (resultSelector) {\n return fromEventPattern(addHandler, removeHandler).pipe(map(args => isArray(args) ? resultSelector(...args) : resultSelector(args)));\n }\n return new Observable(subscriber => {\n const handler = (...e) => subscriber.next(e.length === 1 ? e[0] : e);\n let retValue;\n try {\n retValue = addHandler(handler);\n } catch (err) {\n subscriber.error(err);\n return undefined;\n }\n if (!isFunction(removeHandler)) {\n return undefined;\n }\n return () => removeHandler(handler, retValue);\n });\n}\n//# sourceMappingURL=fromEventPattern.js.map","map":null,"metadata":{},"sourceType":"module","externalDependencies":[]}
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