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- import { Observable } from '../Observable';
- import { SchedulerAction, SchedulerLike } from '../types';
- import { Subscriber } from '../Subscriber';
- import { Subscription } from '../Subscription';
- /**
- * Convert an object into an Observable of `[key, value]` pairs.
- *
- * <span class="informal">Turn entries of an object into a stream.</span>
- *
- * <img src="./img/pairs.png" width="100%">
- *
- * `pairs` takes an arbitrary object and returns an Observable that emits arrays. Each
- * emitted array has exactly two elements - the first is a key from the object
- * and the second is a value corresponding to that key. Keys are extracted from
- * an object via `Object.keys` function, which means that they will be only
- * enumerable keys that are present on an object directly - not ones inherited
- * via prototype chain.
- *
- * By default these arrays are emitted synchronously. To change that you can
- * pass a {@link SchedulerLike} as a second argument to `pairs`.
- *
- * @example <caption>Converts a javascript object to an Observable</caption>
- * ```javascript
- * const obj = {
- * foo: 42,
- * bar: 56,
- * baz: 78
- * };
- *
- * pairs(obj)
- * .subscribe(
- * value => console.log(value),
- * err => {},
- * () => console.log('the end!')
- * );
- *
- * // Logs:
- * // ["foo": 42],
- * // ["bar": 56],
- * // ["baz": 78],
- * // "the end!"
- * ```
- *
- * @param {Object} obj The object to inspect and turn into an
- * Observable sequence.
- * @param {Scheduler} [scheduler] An optional IScheduler to schedule
- * when resulting Observable will emit values.
- * @returns {(Observable<Array<string|T>>)} An observable sequence of
- * [key, value] pairs from the object.
- */
- export declare function pairs<T>(obj: Object, scheduler?: SchedulerLike): Observable<[string, T]>;
- /** @internal */
- export declare function dispatch<T>(this: SchedulerAction<any>, state: {
- keys: string[];
- index: number;
- subscriber: Subscriber<[string, T]>;
- subscription: Subscription;
- obj: Object;
- }): void;
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