import { Injector, Signal } from '@angular/core';
import { MutationFilters } from '@tanstack/query-core';
export interface InjectIsMutatingOptions {
    /**
     * The `Injector` in which to create the isMutating signal.
     *
     * If this is not provided, the current injection context will be used instead (via `inject`).
     */
    injector?: Injector;
}
/**
 * Injects a signal that tracks the number of mutations that your application currently has `pending`
 * (useful for app-wide loading indicators).
 *
 * @param filters - The {@link MutationFilters} to narrow down the matched mutations.
 * @param options - Additional configuration
 * @returns A `Signal` with the number of mutations that your application currently has `pending`.
 *
 * @example
 * ```angular-ts
 * @Component({
 *   selector: 'posts-mutating-indicator',
 *   template: `
 *     @if (isMutatingPosts()) {
 *       <span>Saving posts...</span>
 *     }
 *   `,
 * })
 * export class PostsMutatingIndicator {
 *   // How many mutations matching the posts prefix are in progress?
 *   readonly isMutatingPosts = injectIsMutating({ mutationKey: ['posts'] })
 * }
 * ```
 */
export declare function injectIsMutating(filters?: MutationFilters, options?: InjectIsMutatingOptions): Signal<number>;