survey-core/typings/src/dragdrop/engine.d.ts

survey.js is a JavaScript Survey Library. It is a modern way to add a survey to your website. It uses JSON for survey metadata and results.

export interface IDragDropEngine {
    dragInit(event: PointerEvent, draggedElement: any, parentElement: any, draggedElementNode: HTMLElement): void;
    dragOver(event: PointerEvent): void;
    drop(): void;
    clear(): void;
}