import { type RunAddCoreVariationCommandOptions } from './cli-add-shared.js';
/**
 * Add one editor-side variation registration for an existing core or external block.
 *
 * @param options Command options for the core-variation scaffold workflow.
 * @param options.cwd Working directory used to resolve the nearest official workspace.
 * Defaults to `process.cwd()`.
 * @param options.targetBlockName Full `namespace/block` name that receives the variation.
 * @param options.variationName Human-entered variation name normalized into the generated slug.
 * @returns The normalized variation metadata, owning workspace directory, and
 * optional warnings for suspicious but forward-compatible targets.
 * @throws {Error} When the command is run outside an official workspace, the
 * target block name is not full `namespace/block` form, or the generated file
 * already exists.
 */
export declare function runAddCoreVariationCommand({ cwd, targetBlockName, targetBlockNameDiagnostics, variationName }: RunAddCoreVariationCommandOptions): Promise<{
    projectDir: string;
    targetBlockName: string;
    variationFile: string;
    variationSlug: string;
    warnings?: string[];
}>;