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import { Observable } from '../Observable';
import { SchedulerLike } from '../types';
import { from } from './from';
/**
* @deprecated Use `from(Object.entries(obj))` instead. Will be removed in v8.
*/
export function pairs<T>(arr: readonly T[], scheduler?: SchedulerLike): Observable<[string, T]>;
/**
* @deprecated Use `from(Object.entries(obj))` instead. Will be removed in v8.
*/
export function pairs<O extends Record<string, unknown>>(obj: O, scheduler?: SchedulerLike): Observable<[keyof O, O[keyof O]]>;
/**
* @deprecated Use `from(Object.entries(obj))` instead. Will be removed in v8.
*/
export function pairs<T>(iterable: Iterable<T>, scheduler?: SchedulerLike): Observable<[string, T]>;
/**
* @deprecated Use `from(Object.entries(obj))` instead. Will be removed in v8.
*/
export function pairs(
n: number | bigint | boolean | ((...args: any[]) => any) | symbol,
scheduler?: SchedulerLike
): Observable<[never, never]>;
/**
* Convert an object into an Observable of `[key, value]` pairs.
*
* <span class="informal">Turn entries of an object into a stream.</span>
*
* 
*
* `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
*
* Converts an object to an Observable
*
* ```ts
* import { pairs } from 'rxjs';
*
* const obj = {
* foo: 42,
* bar: 56,
* baz: 78
* };
*
* pairs(obj).subscribe({
* next: value => console.log(value),
* complete: () => console.log('Complete!')
* });
*
* // Logs:
* // ['foo', 42]
* // ['bar', 56]
* // ['baz', 78]
* // 'Complete!'
* ```
*
* ### Object.entries required
*
* In IE, you will need to polyfill `Object.entries` in order to use this.
* [MDN has a polyfill here](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/entries)
*
* @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.
* @deprecated Use `from(Object.entries(obj))` instead. Will be removed in v8.
*/
export function pairs(obj: any, scheduler?: SchedulerLike) {
return from(Object.entries(obj), scheduler as any);
}