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/*---------------------------------------------------------------------------------------------
pendingRequestRegistry.ts
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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import { DeferredPromise } from '../../../base/common/async.js';
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import { CancellationError } from '../../../base/common/errors.js';
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/**
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* Registry of parked deferred promises keyed by string id. Used to
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* track request/response round-trips where a callback fires a signal
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* that an external responder may resolve synchronously.
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*
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* The atomic register-then-fire is enforced by {@link registerAndFire}
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* rather than by convention: a synchronous responder (e.g.
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* `agentSideEffects.ts:_handleToolReady` auto-approving writes inside
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* the listener for the fired signal) registered AFTER the fire would
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* miss its response and the awaited promise would deadlock — a
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* regression caught in Claude phase 7.
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*/
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export class PendingRequestRegistry<T> {
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private readonly _entries = new Map<string, DeferredPromise<T>>();
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/**