/**
 * vapor-chamber - Vue DevTools integration
 *
 * Optional. Call setupDevtools(bus, app) once at app setup.
 * Requires @vue/devtools-api to be installed — silently no-ops if not present.
 */
import type { Hook } from './command-bus';
interface Observable {
    onAfter: (hook: Hook) => () => void;
}
/**
 * Connect a command bus to Vue DevTools.
 *
 * - Adds a **Commands** timeline layer: every dispatch appears as an event,
 *   green for success, red for error.
 * - Adds a **Vapor Chamber** inspector panel: browse recent commands,
 *   inspect target/payload/result of each one.
 *
 * @param bus  A CommandBus or AsyncCommandBus instance to observe.
 * @param app  The Vue app instance (passed to setupDevtoolsPlugin).
 * @returns    Unsubscribe function — call it to detach from the bus.
 *
 * @example
 * import { createApp } from 'vue';
 * import { getCommandBus, setupDevtools } from 'vapor-chamber';
 *
 * const app = createApp(App);
 * setupDevtools(getCommandBus(), app);
 * app.mount('#app');
 */
export declare function setupDevtools(bus: Observable, app: unknown): () => void;
export {};
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