/**
 * revenexx: block definitions registered at runtime.
 *
 * Build-time block definitions are collected from `defineBlokkli()` calls.
 * Some blocks are only known at runtime, e.g. blocks contributed by theme
 * extensions that are installed per tenant. Their definitions are stored in a
 * Nuxt `useState()` entry (see `useBlokkliRuntimeBlocks()`) and merged with the
 * build-time definitions by the definition provider.
 *
 * Runtime blocks that follow the extension naming scheme (`ext__…`) have no
 * component or icon of their own: they render through the generic
 * `extension_host` block of the theme and share its icon.
 *
 * This file is intentionally free of Nuxt/Vue runtime imports so it can be
 * unit tested in isolation.
 */
import type { BlockDefinition } from '#blokkli-build/definitions';
/**
 * The `useState()` key holding block definitions registered at runtime.
 */
export declare const RUNTIME_BLOCKS_STATE_KEY = "blokkli:runtime-blocks";
/**
 * Bundle prefix of blocks contributed by theme extensions
 * (`ext__<vendor>__<extension>__<id>`).
 */
export declare const EXTENSION_BUNDLE_PREFIX = "ext__";
/**
 * Bundle of the block that renders all extension blocks.
 */
export declare const EXTENSION_HOST_BUNDLE = "extension_host";
/**
 * Whether the bundle was contributed by a theme extension.
 */
export declare function isExtensionBundle(bundle: string): boolean;
/**
 * Merge build-time and runtime block definitions.
 *
 * Runtime definitions are appended after the build-time ones.
 */
export declare function mergeBlockDefinitions(staticBlocks: BlockDefinition[], runtimeBlocks: BlockDefinition[]): BlockDefinition[];
/**
 * Resolve the icon of a block bundle.
 *
 * Extension bundles without an icon of their own fall back to the icon of the
 * extension host block.
 */
export declare function resolveBlockIcon(icons: Record<string, string>, bundle: string): string | undefined;
/**
 * The component key to fall back to when no component was found for a
 * bundle, or null if there is no fallback.
 *
 * Extension bundles render through the extension host block, which resolves
 * the extension's remote island from the bundle name.
 */
export declare function getFallbackComponentKey(type: 'block' | 'fragment', bundleOrFragmentName: string): string | null;