src/plugins/remark-mermaid.js

import { visit } from "unist-util-visit";

export function remarkMermaid() {
	return (tree) => {
		visit(tree, "code", (node) => {
			if (node.lang === "mermaid") {
				// 将 mermaid 代码块转换为自定义节点类型
				node.type = "mermaid";
				node.data = {
					hName: "div",
					hProperties: {
						className: ["mermaid-container"],
						"data-mermaid-code": node.value,
					},
				};
			}
		});
	};
}