/**
 * Copyright (c) 2020-present, Goldman Sachs
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import type { PlainObject } from '@finos/legend-shared';
import type { V1_PendingTasksResponse } from '@finos/legend-graph';
import type { LakehouseContractServerClient } from '@finos/legend-server-lakehouse';
/**
 * Default TTL for cached pending-tasks responses. The entitlements server
 * was reporting overload from this endpoint, so we cache responses briefly
 * and dedupe in-flight requests across all UI consumers (header badge,
 * entitlements dashboard, etc.).
 */
export declare const PENDING_TASKS_CACHE_TTL_MS = 60000;
/**
 * Shared cache + in-flight request dedupe for `getPendingTasks`.
 *
 * - Multiple concurrent callers for the same user share a single network call.
 * - Subsequent callers within `PENDING_TASKS_CACHE_TTL_MS` get the cached
 *   response without hitting the server.
 * - Mutating operations (approve/deny) should call `invalidate()` so the
 *   next read refreshes.
 */
export declare class PendingTasksCache {
    private readonly client;
    private readonly cache;
    private readonly inFlight;
    constructor(client: LakehouseContractServerClient);
    private static keyFor;
    invalidate(user?: string): void;
    fetch(user: string | undefined, token: string | undefined, options?: {
        forceRefresh?: boolean;
    }): Promise<PlainObject<V1_PendingTasksResponse>>;
}
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