首先下载安装 js-yaml； npm install js-yaml
创建文件写入代码
import CodeMirror from "codemirror";
import "codemirror/addon/lint/lint.css";
import "codemirror/lib/codemirror.css";
import "codemirror/theme/monokai.css";
import "codemirror/theme/midnight.css";
import "codemirror/theme/mdn-like.css";
import "codemirror/mode/yaml/yaml";
import "codemirror/addon/lint/lint";
import "codemirror/addon/lint/yaml-lint";
// 代码折叠
import "codemirror/addon/fold/foldgutter.css";
import "codemirror/addon/fold/foldcode.js";
import "codemirror/addon/fold/foldgutter.js";
import "codemirror/addon/fold/brace-fold.js";
import "codemirror/addon/fold/comment-fold.js";
import "codemirror/addon/fold/xml-fold.js";
import "codemirror/addon/fold/markdown-fold.js";
import "codemirror/addon/fold/indent-fold.js";
// 查找
import "codemirror/addon/scroll/annotatescrollbar.js";
import "codemirror/addon/search/matchesonscrollbar.js";
import "codemirror/addon/search/match-highlighter.js";
import "codemirror/addon/search/jump-to-line.js";
import "codemirror/addon/dialog/dialog.js";
import "codemirror/addon/dialog/dialog.css";
import "codemirror/addon/search/searchcursor.js";
import "codemirror/addon/search/search.js";
window.jsyaml = require("js-yaml"); // 引入js-yaml为codemirror提高语法检查核心支持
封装完插件导入使用即可