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{"version":3,"file":"NeverObservable.js","sourceRoot":"","sources":["../../src/observable/NeverObservable.ts"],"names":[],"mappings":";;;;;;AAAA,2BAA2B,eAAe,CAAC,CAAA;AAE3C,qBAAqB,cAAc,CAAC,CAAA;AAEpC;;;;GAIG;AACH;IAAwC,mCAAa;IAoCnD;QACE,iBAAO,CAAC;IACV,CAAC;IArCD;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;OA8BG;IACI,sBAAM,GAAb;QACE,MAAM,CAAC,IAAI,eAAe,EAAK,CAAC;IAClC,CAAC;IAMD,oCAAoC,CAAC,oCAAU,GAAV,UAAW,UAAyB;QACvE,WAAI,EAAE,CAAC;IACT,CAAC;IACH,sBAAC;AAAD,CAAC,AA3CD,CAAwC,uBAAU,GA2CjD;AA3CY,uBAAe,kBA2C3B,CAAA","sourcesContent":["import { Observable } from '../Observable';\nimport { Subscriber } from '../Subscriber';\nimport { noop } from '../util/noop';\n\n/**\n * We need this JSDoc comment for affecting ESDoc.\n * @extends {Ignored}\n * @hide true\n */\nexport class NeverObservable<T> extends Observable<T> {\n /**\n * Creates an Observable that emits no items to the Observer.\n *\n * <span class=\"informal\">An Observable that never emits anything.</span>\n *\n * <img src=\"./img/never.png\" width=\"100%\">\n *\n * This static operator is useful for creating a simple Observable that emits\n * neither values nor errors nor the completion notification. It can be used\n * for testing purposes or for composing with other Observables. Please note\n * that by never emitting a complete notification, this Observable keeps the\n * subscription from being disposed automatically. Subscriptions need to be\n * manually disposed.\n *\n * @example <caption>Emit the number 7, then never emit anything else (not even complete).</caption>\n * function info() {\n * console.log('Will not be called');\n * }\n * var result = Rx.Observable.never().startWith(7);\n * result.subscribe(x => console.log(x), info, info);\n *\n * @see {@link create}\n * @see {@link empty}\n * @see {@link of}\n * @see {@link throw}\n *\n * @return {Observable} A \"never\" Observable: never emits anything.\n * @static true\n * @name never\n * @owner Observable\n */\n static create<T>() {\n return new NeverObservable<T>();\n }\n\n constructor() {\n super();\n }\n\n /** @deprecated internal use only */ _subscribe(subscriber: Subscriber<T>): void {\n noop();\n }\n}\n"]} |