使用Nodejs编写一个脚本实现markdown转pdf功能

pnpm add markdown-pdf node-fetch

import fs from "fs";
import path from "path";
import fetch from "node-fetch";
import markdownPdf from "markdown-pdf";

async function prepareMarkdown(inputFile, outputFile) {
  let data = fs.readFileSync(inputFile, "utf8");
  const regex = /!\[.*?\]\((.*?)\)/g;
  let match;

  while ((match = regex.exec(data)) !== null) {
    const imageUrl = match[1];
    const imageName = path.basename(imageUrl);
    const imagePath = "./images/" + imageName;

    // 确保 images 目录存在
    const directory = path.dirname(imagePath);
    if (!fs.existsSync(directory)) {
      fs.mkdirSync(directory, { recursive: true });
    }

    // 下载图片，如果还未下载
    if (!fs.existsSync(imagePath)) {
      const response = await fetch(imageUrl);
      const buffer = Buffer.from(await response.arrayBuffer());
      fs.writeFileSync(imagePath, buffer);
    }

    // 替换 Markdown 中的图片链接为本地路径
    data = data.replace(imageUrl, imagePath);
  }

  // 将替换后的 Markdown 写入到临时文件
  fs.writeFileSync(outputFile, data);
}

// 将 Markdown 转换为 PDF
async function markdownToPdf(inputFile, pdfFile) {
  const tempFile = "moment.md";
  await prepareMarkdown(inputFile, tempFile);
  markdownPdf()
    .from(tempFile)
    .to(pdfFile, () => {
      console.log("PDF 创建成功");

      fs.unlinkSync(tempFile);
    });
}

markdownToPdf("./如何将 NestJs 应用部署到 vercel.md", "./moment.pdf");

node index.js