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- {"version":3,"file":"debounce.js","sourceRoot":"","sources":["../../src/operators/debounce.ts"],"names":[],"mappings":";;;;;;AAKA,gCAAgC,oBAAoB,CAAC,CAAA;AAErD,kCAAkC,2BAA2B,CAAC,CAAA;AAG9D;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;GAyCG;AACH,kBAA4B,gBAA6D;IACvF,MAAM,CAAC,UAAC,MAAqB,IAAK,OAAA,MAAM,CAAC,IAAI,CAAC,IAAI,gBAAgB,CAAC,gBAAgB,CAAC,CAAC,EAAnD,CAAmD,CAAC;AACxF,CAAC;AAFe,gBAAQ,WAEvB,CAAA;AAED;IACE,0BAAoB,gBAA6D;QAA7D,qBAAgB,GAAhB,gBAAgB,CAA6C;IACjF,CAAC;IAED,+BAAI,GAAJ,UAAK,UAAyB,EAAE,MAAW;QACzC,MAAM,CAAC,MAAM,CAAC,SAAS,CAAC,IAAI,kBAAkB,CAAC,UAAU,EAAE,IAAI,CAAC,gBAAgB,CAAC,CAAC,CAAC;IACrF,CAAC;IACH,uBAAC;AAAD,CAAC,AAPD,IAOC;AAED;;;;GAIG;AACH;IAAuC,sCAAqB;IAK1D,4BAAY,WAA0B,EAClB,gBAA6D;QAC/E,kBAAM,WAAW,CAAC,CAAC;QADD,qBAAgB,GAAhB,gBAAgB,CAA6C;QAJzE,aAAQ,GAAY,KAAK,CAAC;QAC1B,yBAAoB,GAAiB,IAAI,CAAC;IAKlD,CAAC;IAES,kCAAK,GAAf,UAAgB,KAAQ;QACtB,IAAI,CAAC;YACH,IAAM,MAAM,GAAG,IAAI,CAAC,gBAAgB,CAAC,IAAI,CAAC,IAAI,EAAE,KAAK,CAAC,CAAC;YAEvD,EAAE,CAAC,CAAC,MAAM,CAAC,CAAC,CAAC;gBACX,IAAI,CAAC,QAAQ,CAAC,KAAK,EAAE,MAAM,CAAC,CAAC;YAC/B,CAAC;QACH,CAAE;QAAA,KAAK,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC;YACb,IAAI,CAAC,WAAW,CAAC,KAAK,CAAC,GAAG,CAAC,CAAC;QAC9B,CAAC;IACH,CAAC;IAES,sCAAS,GAAnB;QACE,IAAI,CAAC,SAAS,EAAE,CAAC;QACjB,IAAI,CAAC,WAAW,CAAC,QAAQ,EAAE,CAAC;IAC9B,CAAC;IAEO,qCAAQ,GAAhB,UAAiB,KAAQ,EAAE,QAAuC;QAChE,IAAI,YAAY,GAAG,IAAI,CAAC,oBAAoB,CAAC;QAC7C,IAAI,CAAC,KAAK,GAAG,KAAK,CAAC;QACnB,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC;QACrB,EAAE,CAAC,CAAC,YAAY,CAAC,CAAC,CAAC;YACjB,YAAY,CAAC,WAAW,EAAE,CAAC;YAC3B,IAAI,CAAC,MAAM,CAAC,YAAY,CAAC,CAAC;QAC5B,CAAC;QAED,YAAY,GAAG,qCAAiB,CAAC,IAAI,EAAE,QAAQ,CAAC,CAAC;QACjD,EAAE,CAAC,CAAC,CAAC,YAAY,CAAC,MAAM,CAAC,CAAC,CAAC;YACzB,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,oBAAoB,GAAG,YAAY,CAAC,CAAC;QACrD,CAAC;IACH,CAAC;IAED,uCAAU,GAAV,UAAW,UAAa,EAAE,UAAa,EAC5B,UAAkB,EAAE,UAAkB,EACtC,QAA+B;QACxC,IAAI,CAAC,SAAS,EAAE,CAAC;IACnB,CAAC;IAED,2CAAc,GAAd;QACE,IAAI,CAAC,SAAS,EAAE,CAAC;IACnB,CAAC;IAED,sCAAS,GAAT;QACE,EAAE,CAAC,CAAC,IAAI,CAAC,QAAQ,CAAC,CAAC,CAAC;YAClB,IAAM,KAAK,GAAG,IAAI,CAAC,KAAK,CAAC;YACzB,IAAM,YAAY,GAAG,IAAI,CAAC,oBAAoB,CAAC;YAC/C,EAAE,CAAC,CAAC,YAAY,CAAC,CAAC,CAAC;gBACjB,IAAI,CAAC,oBAAoB,GAAG,IAAI,CAAC;gBACjC,YAAY,CAAC,WAAW,EAAE,CAAC;gBAC3B,IAAI,CAAC,MAAM,CAAC,YAAY,CAAC,CAAC;YAC5B,CAAC;YACD,IAAI,CAAC,KAAK,GAAG,IAAI,CAAC;YAClB,IAAI,CAAC,QAAQ,GAAG,KAAK,CAAC;YACtB,gBAAK,CAAC,KAAK,YAAC,KAAK,CAAC,CAAC;QACrB,CAAC;IACH,CAAC;IACH,yBAAC;AAAD,CAAC,AAlED,CAAuC,iCAAe,GAkErD","sourcesContent":["import { Operator } from '../Operator';\nimport { Observable, SubscribableOrPromise } from '../Observable';\nimport { Subscriber } from '../Subscriber';\nimport { Subscription, TeardownLogic } from '../Subscription';\n\nimport { OuterSubscriber } from '../OuterSubscriber';\nimport { InnerSubscriber } from '../InnerSubscriber';\nimport { subscribeToResult } from '../util/subscribeToResult';\nimport { MonoTypeOperatorFunction } from '../interfaces';\n\n/**\n * Emits a value from the source Observable only after a particular time span\n * determined by another Observable has passed without another source emission.\n *\n * <span class=\"informal\">It's like {@link debounceTime}, but the time span of\n * emission silence is determined by a second Observable.</span>\n *\n * <img src=\"./img/debounce.png\" width=\"100%\">\n *\n * `debounce` delays values emitted by the source Observable, but drops previous\n * pending delayed emissions if a new value arrives on the source Observable.\n * This operator keeps track of the most recent value from the source\n * Observable, and spawns a duration Observable by calling the\n * `durationSelector` function. The value is emitted only when the duration\n * Observable emits a value or completes, and if no other value was emitted on\n * the source Observable since the duration Observable was spawned. If a new\n * value appears before the duration Observable emits, the previous value will\n * be dropped and will not be emitted on the output Observable.\n *\n * Like {@link debounceTime}, this is a rate-limiting operator, and also a\n * delay-like operator since output emissions do not necessarily occur at the\n * same time as they did on the source Observable.\n *\n * @example <caption>Emit the most recent click after a burst of clicks</caption>\n * var clicks = Rx.Observable.fromEvent(document, 'click');\n * var result = clicks.debounce(() => Rx.Observable.interval(1000));\n * result.subscribe(x => console.log(x));\n *\n * @see {@link audit}\n * @see {@link debounceTime}\n * @see {@link delayWhen}\n * @see {@link throttle}\n *\n * @param {function(value: T): SubscribableOrPromise} durationSelector A function\n * that receives a value from the source Observable, for computing the timeout\n * duration for each source value, returned as an Observable or a Promise.\n * @return {Observable} An Observable that delays the emissions of the source\n * Observable by the specified duration Observable returned by\n * `durationSelector`, and may drop some values if they occur too frequently.\n * @method debounce\n * @owner Observable\n */\nexport function debounce<T>(durationSelector: (value: T) => SubscribableOrPromise<number>): MonoTypeOperatorFunction<T> {\n return (source: Observable<T>) => source.lift(new DebounceOperator(durationSelector));\n}\n\nclass DebounceOperator<T> implements Operator<T, T> {\n constructor(private durationSelector: (value: T) => SubscribableOrPromise<number>) {\n }\n\n call(subscriber: Subscriber<T>, source: any): TeardownLogic {\n return source.subscribe(new DebounceSubscriber(subscriber, this.durationSelector));\n }\n}\n\n/**\n * We need this JSDoc comment for affecting ESDoc.\n * @ignore\n * @extends {Ignored}\n */\nclass DebounceSubscriber<T, R> extends OuterSubscriber<T, R> {\n private value: T;\n private hasValue: boolean = false;\n private durationSubscription: Subscription = null;\n\n constructor(destination: Subscriber<R>,\n private durationSelector: (value: T) => SubscribableOrPromise<number>) {\n super(destination);\n }\n\n protected _next(value: T): void {\n try {\n const result = this.durationSelector.call(this, value);\n\n if (result) {\n this._tryNext(value, result);\n }\n } catch (err) {\n this.destination.error(err);\n }\n }\n\n protected _complete(): void {\n this.emitValue();\n this.destination.complete();\n }\n\n private _tryNext(value: T, duration: SubscribableOrPromise<number>): void {\n let subscription = this.durationSubscription;\n this.value = value;\n this.hasValue = true;\n if (subscription) {\n subscription.unsubscribe();\n this.remove(subscription);\n }\n\n subscription = subscribeToResult(this, duration);\n if (!subscription.closed) {\n this.add(this.durationSubscription = subscription);\n }\n }\n\n notifyNext(outerValue: T, innerValue: R,\n outerIndex: number, innerIndex: number,\n innerSub: InnerSubscriber<T, R>): void {\n this.emitValue();\n }\n\n notifyComplete(): void {\n this.emitValue();\n }\n\n emitValue(): void {\n if (this.hasValue) {\n const value = this.value;\n const subscription = this.durationSubscription;\n if (subscription) {\n this.durationSubscription = null;\n subscription.unsubscribe();\n this.remove(subscription);\n }\n this.value = null;\n this.hasValue = false;\n super._next(value);\n }\n }\n}\n"]}
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