@ant-design/pro-flow/es/FlowEditor/utils/convertChange.js

A React based Flow components

export function convertNodeChange(c) {
  switch (c.type) {
    case 'addNode':
      {
        return [{
          item: c.node,
          type: 'add'
        }];
      }
    case 'addNodes':
      {
        return Object.keys(c.nodes).map(function (key) {
          return {
            item: c.nodes[key],
            type: 'add'
          };
        });
      }
    case 'deleteNode':
      {
        return [{
          id: c.id,
          type: 'remove'
        }];
      }
    case 'updateNodePosition':
      {
        return [{
          id: c.id,
          type: 'position',
          position: c.position
        }];
      }
    default:
      return [];
  }
}
export function convertEdgeChange(c) {
  switch (c.type) {
    case 'addEdge':
      {
        return [{
          item: c.edge,
          type: 'add'
        }];
      }
    case 'addEdges':
      {
        return Object.keys(c.edges).map(function (key) {
          return {
            item: c.edges[key],
            type: 'add'
          };
        });
      }
    case 'deleteEdge':
      {
        return [{
          id: c.id,
          type: 'remove'
        }];
      }
    default:
      return [];
  }
}