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[dotfiles/.git] / .config / coc / extensions / node_modules / coc-prettier / node_modules / rxjs / internal / observable / iif.d.ts

diff --git a/.config/coc/extensions/node_modules/coc-prettier/node_modules/rxjs/internal/observable/iif.d.ts b/.config/coc/extensions/node_modules/coc-prettier/node_modules/rxjs/internal/observable/iif.d.ts
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+import { Observable } from '../Observable';
+import { SubscribableOrPromise } from '../types';
+/**
+ * Decides at subscription time which Observable will actually be subscribed.
+ *
+ * <span class="informal">`If` statement for Observables.</span>
+ *
+ * `iif` accepts a condition function and two Observables. When
+ * an Observable returned by the operator is subscribed, condition function will be called.
+ * Based on what boolean it returns at that moment, consumer will subscribe either to
+ * the first Observable (if condition was true) or to the second (if condition was false). Condition
+ * function may also not return anything - in that case condition will be evaluated as false and
+ * second Observable will be subscribed.
+ *
+ * Note that Observables for both cases (true and false) are optional. If condition points to an Observable that
+ * was left undefined, resulting stream will simply complete immediately. That allows you to, rather
+ * than controlling which Observable will be subscribed, decide at runtime if consumer should have access
+ * to given Observable or not.
+ *
+ * If you have more complex logic that requires decision between more than two Observables, {@link defer}
+ * will probably be a better choice. Actually `iif` can be easily implemented with {@link defer}
+ * and exists only for convenience and readability reasons.
+ *
+ *
+ * ## Examples
+ * ### Change at runtime which Observable will be subscribed
+ * ```ts
+ * import { iif, of } from 'rxjs';
+ *
+ * let subscribeToFirst;
+ * const firstOrSecond = iif(
+ *   () => subscribeToFirst,
+ *   of('first'),
+ *   of('second'),
+ * );
+ *
+ * subscribeToFirst = true;
+ * firstOrSecond.subscribe(value => console.log(value));
+ *
+ * // Logs:
+ * // "first"
+ *
+ * subscribeToFirst = false;
+ * firstOrSecond.subscribe(value => console.log(value));
+ *
+ * // Logs:
+ * // "second"
+ *
+ * ```
+ *
+ * ### Control an access to an Observable
+ * ```ts
+ * let accessGranted;
+ * const observableIfYouHaveAccess = iif(
+ *   () => accessGranted,
+ *   of('It seems you have an access...'), // Note that only one Observable is passed to the operator.
+ * );
+ *
+ * accessGranted = true;
+ * observableIfYouHaveAccess.subscribe(
+ *   value => console.log(value),
+ *   err => {},
+ *   () => console.log('The end'),
+ * );
+ *
+ * // Logs:
+ * // "It seems you have an access..."
+ * // "The end"
+ *
+ * accessGranted = false;
+ * observableIfYouHaveAccess.subscribe(
+ *   value => console.log(value),
+ *   err => {},
+ *   () => console.log('The end'),
+ * );
+ *
+ * // Logs:
+ * // "The end"
+ * ```
+ *
+ * @see {@link defer}
+ *
+ * @param {function(): boolean} condition Condition which Observable should be chosen.
+ * @param {Observable} [trueObservable] An Observable that will be subscribed if condition is true.
+ * @param {Observable} [falseObservable] An Observable that will be subscribed if condition is false.
+ * @return {Observable} Either first or second Observable, depending on condition.
+ * @static true
+ * @name iif
+ * @owner Observable
+*/
+export declare function iif<T = never, F = never>(condition: () => boolean, trueResult?: SubscribableOrPromise<T>, falseResult?: SubscribableOrPromise<F>): Observable<T | F>;