import type { BlockSpec, BlockPlacement } from "./types.js";
export declare class BlockRegistry {
    private byType;
    private byTag;
    register(spec: BlockSpec<any>): void;
    get(type: string): BlockSpec<any> | undefined;
    getByTag(tag: string): BlockSpec<any> | undefined;
    has(type: string): boolean;
    hasTag(tag: string): boolean;
    tags(): Set<string>;
    notionCompatibleTypes(): Set<string>;
    list(placement?: BlockPlacement): BlockSpec<any>[];
}
export declare function registerBlocks(registry: BlockRegistry, specs: BlockSpec<any>[]): void;