/** SDK-owned platform module. This implementation is maintained in goodvibes-sdk. */
import type { RuntimeEventBus } from '../events/index.js';
import type { ConfigEventValue } from '../../../events/config.js';
/**
 * The narrow config surface this needs: one subscription per key, and nothing
 * else. Structural so a test supplies four lines instead of a whole manager.
 */
export interface ConfigChangeSource {
    subscribe(key: string, callback: (newValue: unknown, previousValue: unknown) => void): () => void;
}
export interface ConfigEmitBridgeDeps {
    /** The live ConfigManager, only its per-key subscription is used. */
    readonly config: ConfigChangeSource;
    /** The runtime event bus the config events are emitted onto. */
    readonly bus: Pick<RuntimeEventBus, 'emit'>;
    /**
     * Extra config paths a product knows about that the platform set does not
     * name. Merged with the platform set; duplicates are collapsed.
     */
    readonly additionalKeys?: readonly string[] | undefined;
    /**
     * Trace id source for the emitted envelopes. A settings change is not born of
     * a single caller turn, so absent a real trace a fresh id per event is honest
     * (default). Injected in tests for determinism.
     */
    readonly traceId?: (() => string) | undefined;
    /** Clock seam for `changedAt`; injected in tests. */
    readonly now?: (() => number) | undefined;
}
/**
 * Every config path this bridge watches: the declared scalar schema keys, the
 * daemon-owned non-scalar paths, and the declared secret-bearing paths.
 */
export declare function listWatchableConfigPaths(additionalKeys?: readonly string[]): readonly string[];
/**
 * A config value in the JSON shape the wire carries, or undefined when it is
 * not representable.
 *
 * A value that cannot survive a JSON round trip (a function, a class instance,
 * a cyclic object) is dropped rather than coerced into something that reads as
 * the setting: an event saying `value: "[object Object]"` is worse than one
 * saying only that the key changed, and the subscriber's fallback, re-read the
 * key, is correct in both cases.
 */
export declare function toConfigEventValue(value: unknown): ConfigEventValue | undefined;
/**
 * Attach the bridge. Returns a function that detaches every subscription.
 *
 * Safe to call once at composition time. Detaching matters: the subscriptions
 * are held by the ConfigManager, so a bridge that outlived its bus would keep
 * emitting into a torn-down graph, the same reason the push event sources are
 * registered with the disposal registry.
 */
export declare function attachConfigEmitBridge(deps: ConfigEmitBridgeDeps): () => void;
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