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1 lines
1.7 KiB
1 lines
1.7 KiB
{"ast":null,"code":"import { Subscriber } from '../Subscriber';\nexport function find(predicate, thisArg) {\n if (typeof predicate !== 'function') {\n throw new TypeError('predicate is not a function');\n }\n\n return source => source.lift(new FindValueOperator(predicate, source, false, thisArg));\n}\nexport class FindValueOperator {\n constructor(predicate, source, yieldIndex, thisArg) {\n this.predicate = predicate;\n this.source = source;\n this.yieldIndex = yieldIndex;\n this.thisArg = thisArg;\n }\n\n call(observer, source) {\n return source.subscribe(new FindValueSubscriber(observer, this.predicate, this.source, this.yieldIndex, this.thisArg));\n }\n\n}\nexport class FindValueSubscriber extends Subscriber {\n constructor(destination, predicate, source, yieldIndex, thisArg) {\n super(destination);\n this.predicate = predicate;\n this.source = source;\n this.yieldIndex = yieldIndex;\n this.thisArg = thisArg;\n this.index = 0;\n }\n\n notifyComplete(value) {\n const destination = this.destination;\n destination.next(value);\n destination.complete();\n this.unsubscribe();\n }\n\n _next(value) {\n const {\n predicate,\n thisArg\n } = this;\n const index = this.index++;\n\n try {\n const result = predicate.call(thisArg || this, value, index, this.source);\n\n if (result) {\n this.notifyComplete(this.yieldIndex ? index : value);\n }\n } catch (err) {\n this.destination.error(err);\n }\n }\n\n _complete() {\n this.notifyComplete(this.yieldIndex ? -1 : undefined);\n }\n\n} //# sourceMappingURL=find.js.map","map":null,"metadata":{},"sourceType":"module"}
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