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dsh-mermaid

Mermaid

在 DeepSeek Harness 中渲染 Mermaid 代码块，并支持图表/代码切换。

插件会安装到这里；不确定时保持 web。

npx -y @deepseek-ai/dsh plugin --profile web add dsh-mermaid@0.4.0
README兼容性版本

兼容性与来源证明

Mermaid 以 dsh-mermaid 发布，当前版本为 0.4.0。Plugin Hub 会校验它的 manifest，并保存精确安装来源，便于复现安装结果。

DSH 兼容范围
*
运行环境
web
发布来源
npm
Registry 更新时间
2026/9/20

版本

0.4.0stable
2026/9/5
0.3.1stable
2026/9/4
0.3.0stable
2026/8/24
查看其余 6 个版本收起版本
0.2.0stable
2026/8/24
0.1.3stable
2026/8/24
0.1.2stable
2026/8/24
0.1.1stable
2026/8/23
0.1.0stable
2026/8/23
0.5.0stable
2026/8/21

相关插件

正在加载相关插件…

最新版
0.4.0
DSH
*
HMR
重启进程
Tree shaking
未声明可安全裁剪
解包体积
3.3 MB
文件数
11
Surface
web
许可证
MIT
发布源
npm
GitHub
★ 0
周下载
496
安全扫描
✓ v0.4.0 扫描通过
查看源码 ↗项目主页 ↗
README Badge

点击下方 Badge 复制 Markdown，粘贴到 README 即可。

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Mermaid — DeepSeek Harness 插件（DSH Plugin）

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README

dsh-mermaid

简体中文 | English

Render Mermaid fenced code blocks in DeepSeek Harness Web as SVG diagrams with a Code / Diagram toggle. The plugin supports streaming responses, dark mode, fullscreen viewing, zoom and pan, SVG export, and automatic fallback to source code when rendering fails.

Features

  • Supports mermaid, mermaidjs, and mmd fenced code blocks
  • Works with the DSH/Shiki plain fallback, where code elements may not have a language class
  • Bundles the exact Mermaid 11.17.0 release and requires no runtime CDN
  • Loads the bundled Mermaid runtime from DSH only after the first Mermaid block is detected
  • Renders multiple diagrams through a serial queue and yields between renders to keep the page responsive
  • Uses Mermaid's securityLevel: strict
  • Suppresses Mermaid's built-in parse-error SVG so failed renders fall back cleanly without leaving temporary error graphics in the document
  • Opens rendered diagrams in a fullscreen viewer with zoom, pan, reset, and fit-to-window controls
  • Keeps keyboard focus inside the fullscreen viewer, isolates background content, and returns focus to the triggering control when closed
  • Announces render and download status to assistive technologies and gives generated SVG diagrams accessible names
  • Exports the rendered diagram as a standalone SVG file directly from the card
  • Keeps fullscreen and SVG download actions available in both views and holds the toolbar in place while switching
  • Localizes plugin-owned interface and status text in Simplified Chinese or English by following the page and browser language
  • Enhances only <pre><code> blocks and ignores inline code
  • Prevents stale asynchronous renders from overwriting newer streaming content
  • Rejects individual diagrams over 50,000 characters or 2,000 lines before invoking Mermaid

Compatibility

Last verified with @deepseek-ai/dsh 0.1.2-rc.1 on 2026-09-05 using Node.js 22.23.2. DSH is currently a developer preview and may introduce compatibility-breaking changes; please open an issue if a newer DSH release changes its plugin loader or Markdown DOM.

Install

If dsh is available globally, install the stable npm release with:

dsh plugin --profile web add -w dsh-mermaid

Without a global dsh command, invoke DSH through npx:

npx.cmd --yes @deepseek-ai/dsh plugin --profile web add -w dsh-mermaid

DSH installs the package through pnpm, detects its dsh.bundle declaration, and automatically adds dsh-mermaid to the web profile bundle list. Restart DSH Web or refresh the page after installation.

Install the latest GitHub source

npx.cmd -y github:MrmoLabs/dsh-mermaid install

This runs the repository's dsh-mermaid installer, which asks DSH to install the GitHub source into the web profile. GitHub installation builds the package during installation. If pnpm reports that it blocked a build script, add the exact package key shown by pnpm to allowBuilds in the profile's pnpm-workspace.yaml, then run the command again. Prefer the npm release for normal use.

Update and uninstall

Update the npm release:

dsh plugin --profile web update -w dsh-mermaid

Uninstall:

dsh plugin --profile web remove -w dsh-mermaid

Restart DSH Web after updating or uninstalling.

Usage

Ask a model to output a Mermaid fenced code block:

```mermaid
flowchart LR
  A[Code] --> B[Diagram]
```

The code block receives Code / Diagram controls and opens in diagram view by default.

Develop from source

Node.js 22.19 or later is required.

npm.cmd install
npm.cmd run check
npm.cmd run build
dsh plugin --profile web add -w .

Build output is written to lib/. The lightweight client.js bootstrap is registered with the DSH client module loader as dsh-mermaid, while the bundled Mermaid runtime is served from the plugin's same-origin host route and loaded on demand. DSH resolves the relative installation path against the current plugin checkout.

For manual local development, the built package can also be copied to:

C:\Users\<username>\.dsh\profiles\web\node_modules\dsh-mermaid

Never commit the complete .dsh directory. It may contain conversations and credentials.

Release checks

npm.cmd run check
npm.cmd run build
npm.cmd pack --dry-run
git status --short
git diff --cached

License

MIT