mermaid-cli

README

Render flowcharts in markdown with mermaid.cli.

version download

Features

  • Based on mermaid.cli/puppeteer, generate svg with base64 encode at compile time, no external css and js required.
  • Same API like gitbook-plugin-mermaid/Typora
  • Support export as pdf

How Does it work

1. Your mermaid string quote with mermaid
2. Puppeteer/Chrome Runtime
3. SVG(XML)
4. <img src='data:image/svg+xml;base64,xxxx'>

Install

puppeteer is a tool to control Chrome via javascript, and mermaid.cli is a wrapper for mermaid on the top of Chrome Runtime.The installation of puppeteer may be hard on private network, so I created a plugin to skip download the Chrome.

in the book.json:

config your chrome exec file

{
  "plugins": ["mermaid-cli"],
  "pluginsConfig": {
    "mermaid-cli": {
      "chromeDir": "/Applications/Google Chrome.app/Contents/MacOS/Google Chrome",
      "chromeArgs": []
    },
  }
}

then

# see https://github.com/GoogleChrome/puppeteer/blob/v1.8.0/docs/api.md#environment-variables
export PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true
# install plugin
gitbook install
# run the gitbook
gitbook serve

Now we can use a local Chrome Runtime without download the slowly large file from npm.

If "Error: spawn E2BIG", please run gitbook install again.

How to use it?

It's the same API as JozoVilcek/piranna's gitbook-plugin-mermaid

There are two options how can be graph put into the gitbook. To use embedded graph, put in your book block as:

{% mermaid %}
graph TD;
  A-->B;
  A-->C;
  B-->D;
  C-->D;
{% endmermaid %}

or

```mermaid
graph TD;
  A-->B;
  A-->C;
  B-->D;
  C-->D;
```

Plugin will pick up block body and replace it with generated base64 svg diagram. To load graph from file, put in your book block as:

{% mermaid src="./diagram.mermaid" %}
{% endmermaid %}

If not absolute, plugin will resolve path given in src attribute relative to the current book page, load its content and generate svg diagram.

TODO

  • remove unnecessary style from svg

Configuration

Setting Description Type Allowed values
chromeArgs Array
-
chromeDir String
-
mermaidArgs Array
-

Plugin


Latest: 1.0.14

1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5, 1.0.7, 1.0.8, 1.0.9, 1.0.10, 1.0.11, 1.0.12, 1.0.13, 1.0.14,

Requirements

GitBook
1.0.14 >=3.0.0

Maintainers

Open on NPM