import { type RunAddBlockStyleCommandOptions } from './cli-add-shared.js';
/**
 * Add one Block Styles registration to an existing workspace block.
 *
 * @param options Command options for the Block Styles scaffold workflow.
 * @param options.blockName Target workspace block slug that will own the style.
 * @param options.cwd Working directory used to resolve the nearest official workspace.
 * Defaults to `process.cwd()`.
 * @param options.styleName Human-entered style name that will be normalized and
 * validated before files are written.
 * @returns A promise that resolves with the normalized `blockSlug`, `styleSlug`,
 * and owning `projectDir` after the style module, style registry, entrypoint
 * hook, and inventory entry have been written successfully.
 * @throws {Error} When the command is run outside an official workspace, when
 * the target block is unknown, when the style slug is invalid, or when a
 * conflicting file or inventory entry already exists.
 */
export declare function runAddBlockStyleCommand({ blockName, cwd, styleName }: RunAddBlockStyleCommandOptions): Promise<{
    blockSlug: string;
    projectDir: string;
    styleSlug: string;
}>;