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编辑当前文件:/home/freeclou/app.optimyar.com/backend/node_modules/dnd-core/lib/reducers/refCount.js
import { ADD_SOURCE, ADD_TARGET, REMOVE_SOURCE, REMOVE_TARGET, } from '../actions/registry'; export default function refCount(state = 0, action) { switch (action.type) { case ADD_SOURCE: case ADD_TARGET: return state + 1; case REMOVE_SOURCE: case REMOVE_TARGET: return state - 1; default: return state; } }