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

使用 codemirror 时，添加插件报如下错误：

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

npm dedupe