export declare class WorkflowImportError extends Error {
    constructor(message: string);
}
export type WorkflowEditorNodeType = 'text' | 'asset' | 'aspectRatio' | 'model' | 'llm' | 'transformText' | 'splitText' | 'ifElse' | 'groupItems' | 'sliceAssets' | 'forEach' | 'forEachEnd' | 'stickyNote' | 'approval' | 'modelInput';
export declare const VALID_EDITOR_NODE_TYPES: readonly WorkflowEditorNodeType[];
export interface WorkflowExportData {
    version: '1.0';
    name: string;
    description: string;
    editorInfo: {
        nodes: Array<{
            type: WorkflowEditorNodeType;
            [key: string]: unknown;
        }>;
        edges: Array<{
            [key: string]: unknown;
        }>;
        inputKeys: string[];
    };
    inputs: unknown[];
    tagSet: string[];
    uiConfig?: object;
    exportedAt: string;
    exportedBy: string;
}
/**
 * Validates a workflow export payload (e.g. from a JSON file import).
 *
 * Throws a `WorkflowImportError` with a human-readable message on the first
 * violation found. Returns the validated data cast to `WorkflowExportData`.
 *
 * Checks performed:
 *  1. Data is a non-null object
 *  2. `version` field is present and equals "1.0"
 *  3. `editorInfo` has non-empty `nodes` and `edges` arrays
 *  4. Each node's `type` is a recognized editor node type
 *  5. `inputs` is an array
 */
export declare function validateEditorInfo(data: unknown): WorkflowExportData;
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