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{"version":3,"file":"takeWhile.js","sourceRoot":"","sources":["../../src/operator/takeWhile.ts"],"names":[],"mappings":";AACA,0BAAyC,wBAAwB,CAAC,CAAA;AAElE;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;GAmCG;AACH,mBAAkD,SAA+C;IAC/F,MAAM,CAAC,qBAAW,CAAC,SAAS,CAAC,CAAC,IAAI,CAAC,CAAC;AACtC,CAAC;AAFe,iBAAS,YAExB,CAAA","sourcesContent":["import { Observable } from '../Observable';\nimport { takeWhile as higherOrder } from '../operators/takeWhile';\n\n/**\n * Emits values emitted by the source Observable so long as each value satisfies\n * the given `predicate`, and then completes as soon as this `predicate` is not\n * satisfied.\n *\n * <span class=\"informal\">Takes values from the source only while they pass the\n * condition given. When the first value does not satisfy, it completes.</span>\n *\n * <img src=\"./img/takeWhile.png\" width=\"100%\">\n *\n * `takeWhile` subscribes and begins mirroring the source Observable. Each value\n * emitted on the source is given to the `predicate` function which returns a\n * boolean, representing a condition to be satisfied by the source values. The\n * output Observable emits the source values until such time as the `predicate`\n * returns false, at which point `takeWhile` stops mirroring the source\n * Observable and completes the output Observable.\n *\n * @example <caption>Emit click events only while the clientX property is greater than 200</caption>\n * var clicks = Rx.Observable.fromEvent(document, 'click');\n * var result = clicks.takeWhile(ev => ev.clientX > 200);\n * result.subscribe(x => console.log(x));\n *\n * @see {@link take}\n * @see {@link takeLast}\n * @see {@link takeUntil}\n * @see {@link skip}\n *\n * @param {function(value: T, index: number): boolean} predicate A function that\n * evaluates a value emitted by the source Observable and returns a boolean.\n * Also takes the (zero-based) index as the second argument.\n * @return {Observable<T>} An Observable that emits the values from the source\n * Observable so long as each value satisfies the condition defined by the\n * `predicate`, then completes.\n * @method takeWhile\n * @owner Observable\n */\nexport function takeWhile<T>(this: Observable<T>, predicate: (value: T, index: number) => boolean): Observable<T> {\n return higherOrder(predicate)(this);\n}\n"]}