使用 `codemirror` 时，添加插件报如下错误：

```shell
Unrecognized extension value in extension set ([object Object]). This sometimes happens because multiple instances of @codemirror/state are loaded, breaking instanceof checks
```
报错信息里提示有多个 `@codemirror/state` 实例，就是依赖重复问题，执行 `npm dedupe` 即可

```shell
npm dedupe
```

使用 codemirror 时，添加插件报如下错误：

shell
Unrecognized extension value in extension set ([object Object]). This sometimes happens because multiple instances of @codemirror/state are loaded, breaking inst

Unrecognized extension value in extension set ([object Object]). This sometimes happens because multiple instances of @codemirror/state are loaded, breaking instanceof checks