/**
 * @license
 * Copyright 2025 Steven Roussey <sroussey@gmail.com>
 * SPDX-License-Identifier: Apache-2.0
 */
import type { ILogger } from "./ILogger";
/**
 * Service token for the global logger instance.
 */
export declare const LOGGER: import("../di").ServiceToken<ILogger>;
/**
 * Registers the default logger factory on the given registry if absent.
 * Called by `bootstrapWorkglow` / `createOrchestrationContext`.
 */
export declare function registerLoggerDefaults(registry?: import("../di/ServiceRegistry").ServiceRegistry): void;
/**
 * Returns the logger from the given registry (defaults to global).
 * If no logger is registered yet, a NullLogger is returned via the default factory.
 */
export declare function getLogger(registry?: import("../di/ServiceRegistry").ServiceRegistry): ILogger;
/**
 * Replaces the logger instance on the given registry (defaults to global).
 */
export declare function setLogger(logger: ILogger, registry?: import("../di/ServiceRegistry").ServiceRegistry): void;
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