import { DragEvent as ReactDragEvent } from '../../../../node_modules/react';
/**
 * De-namespaced from CJO's `application/x-cjo-node-palette` (`NodePalette.tsx:20`).
 * The design system owns no CJO vocabulary, so the MIME string carries the DS's
 * own prefix instead.
 */
export declare const FLOW_NODE_DRAG_MIME = "application/x-flow-node-palette";
export interface FlowNodeDragData {
    /** `FlowNodeKindDef.kind` — the lookup key into the receiving app's own registry. */
    kind: string;
    label: string;
}
/**
 * Reads back the payload written by `NodePalette`'s internal drag handler.
 *
 * Returns `null` for a missing or malformed payload instead of throwing. CJO's own
 * drop handler (`JourneyBuilderPage.tsx:627-635`) calls `JSON.parse` on the raw
 * string with no `try/catch` — this is a deliberate improvement over that gap, not
 * a change to the payload shape itself (still exactly `{ kind, label }`, nothing
 * richer; the drop side is expected to re-resolve the full item from its own
 * registry by `kind`).
 */
export declare function readFlowNodeDragData(event: DragEvent | ReactDragEvent): FlowNodeDragData | null;