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前言
最近我通过在 Antd Table 提供的回调函数等机制中编写代码，实现了这些功能：
- ✨ 每个层级缩进指示线
- ✨ 远程懒加载子节点
- ✨ 每个层级支持分页
最后实现的效果大概是这样的：
功能虽然已经实现了，也记录在了 给 Antd Table 组件编写缩进指引线、子节点懒加载等功能 这篇文章中。不过实现功能是最基本的，不感兴趣的同学完全可以跳过。
这篇文章我想聊聊我在这个需求中，对代码解耦，为组件编写插件机制的一些思考。
重构思路
随着编写功能的增多，逻辑被耦合在 Antd Table 的各个回调函数之中，
- 指引线的逻辑分散在
rewriteColumns,components中。 - 分页的逻辑被分散在
rewriteColumns和rewriteTree中。 - 加载更多的逻辑被分散在
rewriteTree和onExpand中
至此，组件的代码行数也已经来到了 300 行，大概看一下代码的结构，已经是比较混乱了：
export const TreeTable = (rawProps) => {
function rewriteTree() {
//
