react-dnd/dnd-core

export const ADD_SOURCE = 'dnd-core/ADD_SOURCE';
export const ADD_TARGET = 'dnd-core/ADD_TARGET';
export const REMOVE_SOURCE = 'dnd-core/REMOVE_SOURCE';
export const REMOVE_TARGET = 'dnd-core/REMOVE_TARGET';

export function addSource(sourceId) {
  return {
    type: ADD_SOURCE,
    sourceId,
  };
}

export function addTarget(targetId) {
  return {
    type: ADD_TARGET,
    targetId,
  };
}

export function removeSource(sourceId) {
  return {
    type: REMOVE_SOURCE,
    sourceId,
  };
}

export function removeTarget(targetId) {
  return {
    type: REMOVE_TARGET,
    targetId,
  };
}