Merge branch 'develop' into refactor-accessibility

.github/codecov.yaml

@@ -1,6 +1,15 @@
+codecov:
+  branch: develop
+
 comment:
   layout: 'reach, diff, flags, files'
   behavior: default
   require_changes: false # if true: only post the comment if coverage changes
   require_base: no # [yes :: must have a base report to post]
   require_head: yes # [yes :: must have a head report to post]
+
+coverage:
+  status:
+    project:
+      default:
+        threshold: 1%

.github/workflows/build-docs.yml

@@ -2,13 +2,13 @@ name: Build Vitepress docs
 
 on:
   pull_request:
+  merge_group:
 
 permissions:
   contents: read
 
 jobs:
-  # Build job
-  build:
+  build-docs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout

.github/workflows/build.yml

@@ -2,6 +2,7 @@ name: Build
 
 on:
   push: {}
+  merge_group:
   pull_request:
     types:
       - opened
@@ -12,7 +13,7 @@ permissions:
   contents: read
 
 jobs:
-  build:
+  build-mermaid:
     runs-on: ubuntu-latest
     strategy:
       matrix:

.github/workflows/check-readme-in-sync.yml

@@ -14,7 +14,7 @@ permissions:
   contents: read
 
 jobs:
-  check:
+  check-readme:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository

.github/workflows/checks.yml

@@ -1,15 +1,16 @@
 on:
-  push: {}
+  push:
+  merge_group:
   pull_request:
     types:
       - opened
       - synchronize
       - ready_for_review
 
-name: Static analysis
+name: Static analysis on Test files
 
 jobs:
-  test:
+  check-tests:
     runs-on: ubuntu-latest
     name: check tests
     if: github.repository_owner == 'mermaid-js'

.github/workflows/e2e-applitools.yml

@@ -19,7 +19,7 @@ env:
   USE_APPLI: ${{ secrets.APPLITOOLS_API_KEY && 'true' || '' }}
 
 jobs:
-  test:
+  e2e-applitools:
     runs-on: ubuntu-latest
     strategy:
       matrix:

.github/workflows/e2e.yml

@@ -1,12 +1,15 @@
 name: E2E
 
-on: [push, pull_request]
+on:
+  push:
+  pull_request:
+  merge_group:
 
 permissions:
   contents: read
 
 jobs:
-  build:
+  e2e:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false

.github/workflows/lint.yml

@@ -1,7 +1,8 @@
 name: Lint
 
 on:
-  push: {}
+  push:
+  merge_group:
   pull_request:
     types:
       - opened

.github/workflows/publish-docs.yml

@@ -19,7 +19,7 @@ concurrency:
 
 jobs:
   # Build job
-  build:
+  build-docs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -48,11 +48,11 @@ jobs:
           path: packages/mermaid/src/vitepress/.vitepress/dist
 
   # Deployment job
-  deploy:
+  deploy-docs:
     environment:
       name: github-pages
     runs-on: ubuntu-latest
-    needs: build
+    needs: build-docs
     steps:
       - name: Deploy to GitHub Pages
         id: deployment

.github/workflows/release-preview-publish.yml

@@ -6,7 +6,7 @@ on:
       - 'release/**'
 
 jobs:
-  publish:
+  publish-preview:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3

.github/workflows/test.yml

@@ -1,12 +1,12 @@
 name: Unit Tests
 
-on: [push, pull_request]
+on: [push, pull_request, merge_group]
 
 permissions:
   contents: read
 
 jobs:
-  build:
+  unit-test:
     runs-on: ubuntu-latest
     strategy:
       matrix:
@@ -49,9 +49,3 @@ jobs:
           name: mermaid-codecov
           fail_ci_if_error: true
           verbose: true
-      # Coveralls is throwing 500. Disabled for now.
-      # - name: Upload Coverage to Coveralls
-      #   uses: coverallsapp/github-action@v2
-      #   with:
-      #     github-token: ${{ secrets.GITHUB_TOKEN }}
-      #     flag-name: unit

.github/workflows/update-browserlist.yml

@@ -5,7 +5,7 @@ on:
   workflow_dispatch:
 
 jobs:
-  build:
+  update-browser-list:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3

.prettierignore

@@ -6,3 +6,4 @@ coverage
 pnpm-lock.yaml
 stats
 packages/mermaid/src/docs/.vitepress/components.d.ts
+.nyc_output

__mocks__/sankeyRenderer.js

@@ -0,0 +1,13 @@
+/**
+ * Mocked Sankey diagram renderer
+ */
+
+import { vi } from 'vitest';
+
+export const draw = vi.fn().mockImplementation(() => {
+  return '';
+});
+
+export default {
+  draw,
+};

cSpell.json

@@ -106,6 +106,7 @@
     "rehype",
     "roledescription",
     "sandboxed",
+    "sankey",
     "setupgraphviewbox",
     "shiki",
     "sidharth",

cypress/integration/rendering/sankey.spec.ts

@@ -0,0 +1,144 @@
+import { imgSnapshotTest, renderGraph } from '../../helpers/util.js';
+
+describe('Sankey Diagram', () => {
+  it('should render a simple example', () => {
+    imgSnapshotTest(
+      `
+      sankey-beta
+      
+      sourceNode,targetNode,10
+      `,
+      {}
+    );
+  });
+
+  describe('when given a linkColor', function () {
+    this.beforeAll(() => {
+      cy.wrap(
+        `sankey-beta
+      a,b,10
+      `
+      ).as('graph');
+    });
+
+    it('links should use hex color', function () {
+      renderGraph(this.graph, { sankey: { linkColor: '#636465' } });
+
+      cy.get('.link path').should((link) => {
+        expect(link.attr('stroke')).to.equal('#636465');
+      });
+    });
+
+    it('links should be the same color as source node', function () {
+      renderGraph(this.graph, { sankey: { linkColor: 'source' } });
+
+      cy.get('.link path').then((link) => {
+        cy.get('.node[id="node-1"] rect').should((node) =>
+          expect(link.attr('stroke')).to.equal(node.attr('fill'))
+        );
+      });
+    });
+
+    it('links should be the same color as target node', function () {
+      renderGraph(this.graph, { sankey: { linkColor: 'target' } });
+
+      cy.get('.link path').then((link) => {
+        cy.get('.node[id="node-2"] rect').should((node) =>
+          expect(link.attr('stroke')).to.equal(node.attr('fill'))
+        );
+      });
+    });
+
+    it('links must be gradient', function () {
+      renderGraph(this.graph, { sankey: { linkColor: 'gradient' } });
+
+      cy.get('.link path').should((link) => {
+        expect(link.attr('stroke')).to.equal('url(#linearGradient-3)');
+      });
+    });
+  });
+
+  describe('when given a nodeAlignment', function () {
+    this.beforeAll(() => {
+      cy.wrap(
+        `
+        sankey-beta
+        
+        a,b,8
+        b,c,8
+        c,d,8
+        d,e,8
+        
+        x,c,4
+        c,y,4  
+        `
+      ).as('graph');
+    });
+
+    this.afterEach(() => {
+      cy.get('.node[id="node-1"]').should((node) => {
+        expect(node.attr('x')).to.equal('0');
+      });
+      cy.get('.node[id="node-2"]').should((node) => {
+        expect(node.attr('x')).to.equal('100');
+      });
+      cy.get('.node[id="node-3"]').should((node) => {
+        expect(node.attr('x')).to.equal('200');
+      });
+      cy.get('.node[id="node-4"]').should((node) => {
+        expect(node.attr('x')).to.equal('300');
+      });
+      cy.get('.node[id="node-5"]').should((node) => {
+        expect(node.attr('x')).to.equal('400');
+      });
+    });
+
+    it('should justify nodes', function () {
+      renderGraph(this.graph, {
+        sankey: { nodeAlignment: 'justify', width: 410, useMaxWidth: false },
+      });
+      cy.get('.node[id="node-6"]').should((node) => {
+        expect(node.attr('x')).to.equal('0');
+      });
+      cy.get('.node[id="node-7"]').should((node) => {
+        expect(node.attr('x')).to.equal('400');
+      });
+    });
+
+    it('should align nodes left', function () {
+      renderGraph(this.graph, {
+        sankey: { nodeAlignment: 'left', width: 410, useMaxWidth: false },
+      });
+      cy.get('.node[id="node-6"]').should((node) => {
+        expect(node.attr('x')).to.equal('0');
+      });
+      cy.get('.node[id="node-7"]').should((node) => {
+        expect(node.attr('x')).to.equal('300');
+      });
+    });
+
+    it('should align nodes right', function () {
+      renderGraph(this.graph, {
+        sankey: { nodeAlignment: 'right', width: 410, useMaxWidth: false },
+      });
+      cy.get('.node[id="node-6"]').should((node) => {
+        expect(node.attr('x')).to.equal('100');
+      });
+      cy.get('.node[id="node-7"]').should((node) => {
+        expect(node.attr('x')).to.equal('400');
+      });
+    });
+
+    it('should center nodes', function () {
+      renderGraph(this.graph, {
+        sankey: { nodeAlignment: 'center', width: 410, useMaxWidth: false },
+      });
+      cy.get('.node[id="node-6"]').should((node) => {
+        expect(node.attr('x')).to.equal('100');
+      });
+      cy.get('.node[id="node-7"]').should((node) => {
+        expect(node.attr('x')).to.equal('300');
+      });
+    });
+  });
+});

demos/classchart.html

@@ -154,6 +154,29 @@
     </pre>
     <hr />
 
+    <pre class="mermaid">
+    classDiagram
+      A1 --> B1
+      namespace A {
+        class A1 {
+          +foo : string
+        }
+        class A2 {
+          +bar : int
+        }
+      }
+      namespace B {
+        class B1 {
+          +foo : bool
+        }
+        class B2 {
+          +bar : float
+        }
+      }
+      A2 --> B2
+    </pre>
+    <hr />
+
     <script type="module">
       import mermaid from './mermaid.esm.mjs';
       mermaid.initialize({

demos/index.html

@@ -75,6 +75,9 @@
       <li>
         <h2><a href="./zenuml.html">ZenUML</a></h2>
       </li>
+      <li>
+        <h2><a href="./sankey.html">Sankey</a></h2>
+      </li>
     </ul>
   </body>
 </html>

demos/sankey.html

@@ -0,0 +1,108 @@
+<!DOCTYPE html>
+<html lang="en" xmlns="http://www.w3.org/1999/html">
+  <head>
+    <meta charset="utf-8" />
+    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+    <title>States Mermaid Quick Test Page</title>
+    <link rel="icon" type="image/png" href="data:image/png;base64,iVBORw0KGgo=" />
+    <style>
+      div.mermaid {
+        /* font-family: 'trebuchet ms', verdana, arial; */
+        font-family: 'Courier New', Courier, monospace !important;
+      }
+    </style>
+  </head>
+
+  <body>
+    <h1>Sankey diagram demos</h1>
+    <h2>Energy flow</h2>
+    <pre class="mermaid">
+      sankey-beta
+
+      Agricultural 'waste',Bio-conversion,124.729
+      Bio-conversion,Liquid,0.597
+      Bio-conversion,Losses,26.862
+      Bio-conversion,Solid,280.322
+      Bio-conversion,Gas,81.144
+      Biofuel imports,Liquid,35
+      Biomass imports,Solid,35
+      Coal imports,Coal,11.606
+      Coal reserves,Coal,63.965
+      Coal,Solid,75.571
+      District heating,Industry,10.639
+      District heating,Heating and cooling - commercial,22.505
+      District heating,Heating and cooling - homes,46.184
+      Electricity grid,Over generation / exports,104.453
+      Electricity grid,Heating and cooling - homes,113.726
+      Electricity grid,H2 conversion,27.14
+      Electricity grid,Industry,342.165
+      Electricity grid,Road transport,37.797
+      Electricity grid,Agriculture,4.412
+      Electricity grid,Heating and cooling - commercial,40.858
+      Electricity grid,Losses,56.691
+      Electricity grid,Rail transport,7.863
+      Electricity grid,Lighting & appliances - commercial,90.008
+      Electricity grid,Lighting & appliances - homes,93.494
+      Gas imports,Ngas,40.719
+      Gas reserves,Ngas,82.233
+      Gas,Heating and cooling - commercial,0.129
+      Gas,Losses,1.401
+      Gas,Thermal generation,151.891
+      Gas,Agriculture,2.096
+      Gas,Industry,48.58
+      Geothermal,Electricity grid,7.013
+      H2 conversion,H2,20.897
+      H2 conversion,Losses,6.242
+      H2,Road transport,20.897
+      Hydro,Electricity grid,6.995
+      Liquid,Industry,121.066
+      Liquid,International shipping,128.69
+      Liquid,Road transport,135.835
+      Liquid,Domestic aviation,14.458
+      Liquid,International aviation,206.267
+      Liquid,Agriculture,3.64
+      Liquid,National navigation,33.218
+      Liquid,Rail transport,4.413
+      Marine algae,Bio-conversion,4.375
+      Ngas,Gas,122.952
+      Nuclear,Thermal generation,839.978
+      Oil imports,Oil,504.287
+      Oil reserves,Oil,107.703
+      Oil,Liquid,611.99
+      Other waste,Solid,56.587
+      Other waste,Bio-conversion,77.81
+      Pumped heat,Heating and cooling - homes,193.026
+      Pumped heat,Heating and cooling - commercial,70.672
+      Solar PV,Electricity grid,59.901
+      Solar Thermal,Heating and cooling - homes,19.263
+      Solar,Solar Thermal,19.263
+      Solar,Solar PV,59.901
+      Solid,Agriculture,0.882
+      Solid,Thermal generation,400.12
+      Solid,Industry,46.477
+      Thermal generation,Electricity grid,525.531
+      Thermal generation,Losses,787.129
+      Thermal generation,District heating,79.329
+      Tidal,Electricity grid,9.452
+      UK land based bioenergy,Bio-conversion,182.01
+      Wave,Electricity grid,19.013
+      Wind,Electricity grid,289.366
+    </pre>
+
+    <script type="module">
+      import mermaid from './mermaid.esm.mjs';
+      mermaid.initialize({
+        theme: 'default',
+        logLevel: 3,
+        securityLevel: 'loose',
+        sankey: {
+          title: 'Hey, this is Sankey-Beta',
+          width: 1200,
+          height: 600,
+          linkColor: 'gradient',
+          nodeAlignment: 'justify',
+        },
+      });
+    </script>
+  </body>
+</html>

docker-compose.yml

@@ -1,9 +1,36 @@
 version: '3.9'
 services:
   mermaid:
-    image: node:20.3.1-alpine3.18
+    image: node:18.16.1-alpine3.18
     stdin_open: true
     tty: true
     working_dir: /mermaid
+    mem_limit: '2G'
+    environment:
+      - NODE_OPTIONS=--max_old_space_size=2048
     volumes:
       - ./:/mermaid
+      - root_cache:/root/.cache
+      - root_local:/root/.local
+      - root_npm:/root/.npm
+    ports:
+      - 9000:9000
+      - 3333:3333
+  cypress:
+    image: cypress/included:12.16.0
+    stdin_open: true
+    tty: true
+    working_dir: /mermaid
+    mem_limit: '2G'
+    entrypoint: cypress
+    environment:
+      - DISPLAY
+    volumes:
+      - ./:/mermaid
+      - /tmp/.X11-unix:/tmp/.X11-unix
+    network_mode: host
+
+volumes:
+  root_cache:
+  root_local:
+  root_npm:

docs/config/setup/modules/defaultConfig.md

@@ -14,7 +14,7 @@
 
 #### Defined in
 
-[defaultConfig.ts:2293](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/defaultConfig.ts#L2293)
+[defaultConfig.ts:2300](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/defaultConfig.ts#L2300)
 
 ---
 

docs/config/theming.md

@@ -73,9 +73,9 @@ To make a custom theme, modify `themeVariables` via `init`.
 
 You will need to use the [base](#available-themes) theme as it is the only modifiable theme.
 
-| Parameter      | Description                          | Type   | Properties                                                                                          |
-| -------------- | ------------------------------------ | ------ | --------------------------------------------------------------------------------------------------- |
-| themeVariables | Modifiable with the `init` directive | Object | `primaryColor`, `primaryTextColor`, `lineColor` ([see full list](#theme-variables-reference-table)) |
+| Parameter      | Description                          | Type   | Properties                                                                          |
+| -------------- | ------------------------------------ | ------ | ----------------------------------------------------------------------------------- |
+| themeVariables | Modifiable with the `init` directive | Object | `primaryColor`, `primaryTextColor`, `lineColor` ([see full list](#theme-variables)) |
 
 Example of modifying `themeVariables` using the `init` directive:
 

docs/ecosystem/integrations.md

@@ -161,6 +161,8 @@ They also serve as proof of concept, for the variety of things that can be built
   - [Nano Mermaid](https://github.com/Yash-Singh1/nano-mermaid)
 - [CKEditor](https://github.com/ckeditor/ckeditor5)
   - [CKEditor 5 Mermaid plugin](https://github.com/ckeditor/ckeditor5-mermaid)
+- [Standard Notes](https://standardnotes.com/)
+  - [sn-mermaid](https://github.com/nienow/sn-mermaid)
 
 ## Document Generation
 

docs/news/announcements.md

@@ -6,8 +6,8 @@
 
 # Announcements
 
-## [subhash-halder contributed quadrant charts so you can show your manager what to select - just like the strategy consultants at BCG do](https://www.mermaidchart.com/blog/posts/subhash-halder-contributed-quadrant-charts-so-you-can-show-your-manager-what-to-select-just-like-the-strategy-consultants-at-bcg-do/)
+## [Sequence diagrams, the only good thing UML brought to software development](https://www.mermaidchart.com/blog/posts/sequence-diagrams-the-good-thing-uml-brought-to-software-development/)
 
-8 June 2023 · 7 mins
+15 June 2023 · 12 mins
 
-A quadrant chart is a useful diagram that helps users visualize data and identify patterns in a data set.
+Sequence diagrams really shine when you’re documenting different parts of a system and the various ways these parts interact with each other.

docs/news/blog.md

@@ -6,6 +6,12 @@
 
 # Blog
 
+## [Sequence diagrams, the only good thing UML brought to software development](https://www.mermaidchart.com/blog/posts/sequence-diagrams-the-good-thing-uml-brought-to-software-development/)
+
+15 June 2023 · 12 mins
+
+Sequence diagrams really shine when you’re documenting different parts of a system and the various ways these parts interact with each other.
+
 ## [subhash-halder contributed quadrant charts so you can show your manager what to select - just like the strategy consultants at BCG do](https://www.mermaidchart.com/blog/posts/subhash-halder-contributed-quadrant-charts-so-you-can-show-your-manager-what-to-select-just-like-the-strategy-consultants-at-bcg-do/)
 
 8 June 2023 · 7 mins

docs/syntax/gantt.md

@@ -25,25 +25,25 @@ Mermaid can render Gantt diagrams as SVG, PNG or a MarkDown link that can be pas
 ```mermaid-example
 gantt
     title A Gantt Diagram
-    dateFormat  YYYY-MM-DD
+    dateFormat YYYY-MM-DD
     section Section
-    A task           :a1, 2014-01-01, 30d
-    Another task     :after a1  , 20d
+        A task          :a1, 2014-01-01, 30d
+        Another task    :after a1, 20d
     section Another
-    Task in sec      :2014-01-12  , 12d
-    another task      : 24d
+        Task in Another :2014-01-12, 12d
+        another task    :24d
 ```
 
 ```mermaid
 gantt
     title A Gantt Diagram
-    dateFormat  YYYY-MM-DD
+    dateFormat YYYY-MM-DD
     section Section
-    A task           :a1, 2014-01-01, 30d
-    Another task     :after a1  , 20d
+        A task          :a1, 2014-01-01, 30d
+        Another task    :after a1, 20d
     section Another
-    Task in sec      :2014-01-12  , 12d
-    another task      : 24d
+        Task in Another :2014-01-12, 12d
+        another task    :24d
 ```
 
 ## Syntax
@@ -117,17 +117,17 @@ gantt
 It is possible to set multiple dependencies separated by space:
 
 ```mermaid-example
-    gantt
-        apple :a, 2017-07-20, 1w
-        banana :crit, b, 2017-07-23, 1d
-        cherry :active, c, after b a, 1d
+gantt
+    apple :a, 2017-07-20, 1w
+    banana :crit, b, 2017-07-23, 1d
+    cherry :active, c, after b a, 1d
 ```
 
 ```mermaid
-    gantt
-        apple :a, 2017-07-20, 1w
-        banana :crit, b, 2017-07-23, 1d
-        cherry :active, c, after b a, 1d
+gantt
+    apple :a, 2017-07-20, 1w
+    banana :crit, b, 2017-07-23, 1d
+    cherry :active, c, after b a, 1d
 ```
 
 ### Title
@@ -146,22 +146,22 @@ You can add milestones to the diagrams. Milestones differ from tasks as they rep
 
 ```mermaid-example
 gantt
-dateFormat HH:mm
-axisFormat %H:%M
-Initial milestone : milestone, m1, 17:49,2min
-taska2 : 10min
-taska3 : 5min
-Final milestone : milestone, m2, 18:14, 2min
+    dateFormat HH:mm
+    axisFormat %H:%M
+    Initial milestone : milestone, m1, 17:49, 2m
+    Task A : 10m
+    Task B : 5m
+    Final milestone : milestone, m2, 18:08, 4m
 ```
 
 ```mermaid
 gantt
-dateFormat HH:mm
-axisFormat %H:%M
-Initial milestone : milestone, m1, 17:49,2min
-taska2 : 10min
-taska3 : 5min
-Final milestone : milestone, m2, 18:14, 2min
+    dateFormat HH:mm
+    axisFormat %H:%M
+    Initial milestone : milestone, m1, 17:49, 2m
+    Task A : 10m
+    Task B : 5m
+    Final milestone : milestone, m2, 18:08, 4m
 ```
 
 ## Setting dates
@@ -296,29 +296,27 @@ Comments can be entered within a gantt chart, which will be ignored by the parse
 ```mermaid-example
 gantt
     title A Gantt Diagram
-    %% this is a comment
-    dateFormat  YYYY-MM-DD
+    %% This is a comment
+    dateFormat YYYY-MM-DD
     section Section
-    A task           :a1, 2014-01-01, 30d
-    Another task     :after a1  , 20d
+        A task          :a1, 2014-01-01, 30d
+        Another task    :after a1, 20d
     section Another
-    Task in sec      :2014-01-12  , 12d
-    another task      : 24d
-
+        Task in Another :2014-01-12, 12d
+        another task    :24d
 ```
 
 ```mermaid
 gantt
     title A Gantt Diagram
-    %% this is a comment
-    dateFormat  YYYY-MM-DD
+    %% This is a comment
+    dateFormat YYYY-MM-DD
     section Section
-    A task           :a1, 2014-01-01, 30d
-    Another task     :after a1  , 20d
+        A task          :a1, 2014-01-01, 30d
+        Another task    :after a1, 20d
     section Another
-    Task in sec      :2014-01-12  , 12d
-    another task      : 24d
-
+        Task in Another :2014-01-12, 12d
+        another task    :24d
 ```
 
 ## Styling
@@ -440,7 +438,7 @@ Beginner's tip—a full example using interactive links in an html context:
       dateFormat  YYYY-MM-DD
 
       section Clickable
-      Visit mermaidjs           :active, cl1, 2014-01-07, 3d
+      Visit mermaidjs         :active, cl1, 2014-01-07, 3d
       Print arguments         :cl2, after cl1, 3d
       Print task              :cl3, after cl2, 3d
 

docs/syntax/sankey.md

@@ -0,0 +1,510 @@
+> **Warning**
+>
+> ## THIS IS AN AUTOGENERATED FILE. DO NOT EDIT.
+>
+> ## Please edit the corresponding file in [/packages/mermaid/src/docs/syntax/sankey.md](../../packages/mermaid/src/docs/syntax/sankey.md).
+
+# Sankey diagrams
+
+> A sankey diagram is a visualization used to depict a flow from one set of values to another.
+
+::: warning
+This is an experimental diagram. Its syntax are very close to plain CSV, but it is to be extended in the nearest future.
+:::
+
+The things being connected are called nodes and the connections are called links.
+
+## Example
+
+This example taken from [observable](https://observablehq.com/@d3/sankey/2?collection=@d3/d3-sankey). It may be rendered a little bit differently, though, in terms of size and colors.
+
+```mermaid-example
+sankey-beta
+
+Agricultural 'waste',Bio-conversion,124.729
+Bio-conversion,Liquid,0.597
+Bio-conversion,Losses,26.862
+Bio-conversion,Solid,280.322
+Bio-conversion,Gas,81.144
+Biofuel imports,Liquid,35
+Biomass imports,Solid,35
+Coal imports,Coal,11.606
+Coal reserves,Coal,63.965
+Coal,Solid,75.571
+District heating,Industry,10.639
+District heating,Heating and cooling - commercial,22.505
+District heating,Heating and cooling - homes,46.184
+Electricity grid,Over generation / exports,104.453
+Electricity grid,Heating and cooling - homes,113.726
+Electricity grid,H2 conversion,27.14
+Electricity grid,Industry,342.165
+Electricity grid,Road transport,37.797
+Electricity grid,Agriculture,4.412
+Electricity grid,Heating and cooling - commercial,40.858
+Electricity grid,Losses,56.691
+Electricity grid,Rail transport,7.863
+Electricity grid,Lighting & appliances - commercial,90.008
+Electricity grid,Lighting & appliances - homes,93.494
+Gas imports,Ngas,40.719
+Gas reserves,Ngas,82.233
+Gas,Heating and cooling - commercial,0.129
+Gas,Losses,1.401
+Gas,Thermal generation,151.891
+Gas,Agriculture,2.096
+Gas,Industry,48.58
+Geothermal,Electricity grid,7.013
+H2 conversion,H2,20.897
+H2 conversion,Losses,6.242
+H2,Road transport,20.897
+Hydro,Electricity grid,6.995
+Liquid,Industry,121.066
+Liquid,International shipping,128.69
+Liquid,Road transport,135.835
+Liquid,Domestic aviation,14.458
+Liquid,International aviation,206.267
+Liquid,Agriculture,3.64
+Liquid,National navigation,33.218
+Liquid,Rail transport,4.413
+Marine algae,Bio-conversion,4.375
+Ngas,Gas,122.952
+Nuclear,Thermal generation,839.978
+Oil imports,Oil,504.287
+Oil reserves,Oil,107.703
+Oil,Liquid,611.99
+Other waste,Solid,56.587
+Other waste,Bio-conversion,77.81
+Pumped heat,Heating and cooling - homes,193.026
+Pumped heat,Heating and cooling - commercial,70.672
+Solar PV,Electricity grid,59.901
+Solar Thermal,Heating and cooling - homes,19.263
+Solar,Solar Thermal,19.263
+Solar,Solar PV,59.901
+Solid,Agriculture,0.882
+Solid,Thermal generation,400.12
+Solid,Industry,46.477
+Thermal generation,Electricity grid,525.531
+Thermal generation,Losses,787.129
+Thermal generation,District heating,79.329
+Tidal,Electricity grid,9.452
+UK land based bioenergy,Bio-conversion,182.01
+Wave,Electricity grid,19.013
+Wind,Electricity grid,289.366
+```
+
+```mermaid
+sankey-beta
+
+Agricultural 'waste',Bio-conversion,124.729
+Bio-conversion,Liquid,0.597
+Bio-conversion,Losses,26.862
+Bio-conversion,Solid,280.322
+Bio-conversion,Gas,81.144
+Biofuel imports,Liquid,35
+Biomass imports,Solid,35
+Coal imports,Coal,11.606
+Coal reserves,Coal,63.965
+Coal,Solid,75.571
+District heating,Industry,10.639
+District heating,Heating and cooling - commercial,22.505
+District heating,Heating and cooling - homes,46.184
+Electricity grid,Over generation / exports,104.453
+Electricity grid,Heating and cooling - homes,113.726
+Electricity grid,H2 conversion,27.14
+Electricity grid,Industry,342.165
+Electricity grid,Road transport,37.797
+Electricity grid,Agriculture,4.412
+Electricity grid,Heating and cooling - commercial,40.858
+Electricity grid,Losses,56.691
+Electricity grid,Rail transport,7.863
+Electricity grid,Lighting & appliances - commercial,90.008
+Electricity grid,Lighting & appliances - homes,93.494
+Gas imports,Ngas,40.719
+Gas reserves,Ngas,82.233
+Gas,Heating and cooling - commercial,0.129
+Gas,Losses,1.401
+Gas,Thermal generation,151.891
+Gas,Agriculture,2.096
+Gas,Industry,48.58
+Geothermal,Electricity grid,7.013
+H2 conversion,H2,20.897
+H2 conversion,Losses,6.242
+H2,Road transport,20.897
+Hydro,Electricity grid,6.995
+Liquid,Industry,121.066
+Liquid,International shipping,128.69
+Liquid,Road transport,135.835
+Liquid,Domestic aviation,14.458
+Liquid,International aviation,206.267
+Liquid,Agriculture,3.64
+Liquid,National navigation,33.218
+Liquid,Rail transport,4.413
+Marine algae,Bio-conversion,4.375
+Ngas,Gas,122.952
+Nuclear,Thermal generation,839.978
+Oil imports,Oil,504.287
+Oil reserves,Oil,107.703
+Oil,Liquid,611.99
+Other waste,Solid,56.587
+Other waste,Bio-conversion,77.81
+Pumped heat,Heating and cooling - homes,193.026
+Pumped heat,Heating and cooling - commercial,70.672
+Solar PV,Electricity grid,59.901
+Solar Thermal,Heating and cooling - homes,19.263
+Solar,Solar Thermal,19.263
+Solar,Solar PV,59.901
+Solid,Agriculture,0.882
+Solid,Thermal generation,400.12
+Solid,Industry,46.477
+Thermal generation,Electricity grid,525.531
+Thermal generation,Losses,787.129
+Thermal generation,District heating,79.329
+Tidal,Electricity grid,9.452
+UK land based bioenergy,Bio-conversion,182.01
+Wave,Electricity grid,19.013
+Wind,Electricity grid,289.366
+```
+
+::: details
+
+```mermaid-example
+sankey-beta
+
+Agricultural 'waste',Bio-conversion,124.729
+Bio-conversion,Liquid,0.597
+Bio-conversion,Losses,26.862
+Bio-conversion,Solid,280.322
+Bio-conversion,Gas,81.144
+Biofuel imports,Liquid,35
+Biomass imports,Solid,35
+Coal imports,Coal,11.606
+Coal reserves,Coal,63.965
+Coal,Solid,75.571
+District heating,Industry,10.639
+District heating,Heating and cooling - commercial,22.505
+District heating,Heating and cooling - homes,46.184
+Electricity grid,Over generation / exports,104.453
+Electricity grid,Heating and cooling - homes,113.726
+Electricity grid,H2 conversion,27.14
+Electricity grid,Industry,342.165
+Electricity grid,Road transport,37.797
+Electricity grid,Agriculture,4.412
+Electricity grid,Heating and cooling - commercial,40.858
+Electricity grid,Losses,56.691
+Electricity grid,Rail transport,7.863
+Electricity grid,Lighting & appliances - commercial,90.008
+Electricity grid,Lighting & appliances - homes,93.494
+Gas imports,Ngas,40.719
+Gas reserves,Ngas,82.233
+Gas,Heating and cooling - commercial,0.129
+Gas,Losses,1.401
+Gas,Thermal generation,151.891
+Gas,Agriculture,2.096
+Gas,Industry,48.58
+Geothermal,Electricity grid,7.013
+H2 conversion,H2,20.897
+H2 conversion,Losses,6.242
+H2,Road transport,20.897
+Hydro,Electricity grid,6.995
+Liquid,Industry,121.066
+Liquid,International shipping,128.69
+Liquid,Road transport,135.835
+Liquid,Domestic aviation,14.458
+Liquid,International aviation,206.267
+Liquid,Agriculture,3.64
+Liquid,National navigation,33.218
+Liquid,Rail transport,4.413
+Marine algae,Bio-conversion,4.375
+Ngas,Gas,122.952
+Nuclear,Thermal generation,839.978
+Oil imports,Oil,504.287
+Oil reserves,Oil,107.703
+Oil,Liquid,611.99
+Other waste,Solid,56.587
+Other waste,Bio-conversion,77.81
+Pumped heat,Heating and cooling - homes,193.026
+Pumped heat,Heating and cooling - commercial,70.672
+Solar PV,Electricity grid,59.901
+Solar Thermal,Heating and cooling - homes,19.263
+Solar,Solar Thermal,19.263
+Solar,Solar PV,59.901
+Solid,Agriculture,0.882
+Solid,Thermal generation,400.12
+Solid,Industry,46.477
+Thermal generation,Electricity grid,525.531
+Thermal generation,Losses,787.129
+Thermal generation,District heating,79.329
+Tidal,Electricity grid,9.452
+UK land based bioenergy,Bio-conversion,182.01
+Wave,Electricity grid,19.013
+Wind,Electricity grid,289.366
+```
+
+```mermaid
+sankey-beta
+
+Agricultural 'waste',Bio-conversion,124.729
+Bio-conversion,Liquid,0.597
+Bio-conversion,Losses,26.862
+Bio-conversion,Solid,280.322
+Bio-conversion,Gas,81.144
+Biofuel imports,Liquid,35
+Biomass imports,Solid,35
+Coal imports,Coal,11.606
+Coal reserves,Coal,63.965
+Coal,Solid,75.571
+District heating,Industry,10.639
+District heating,Heating and cooling - commercial,22.505
+District heating,Heating and cooling - homes,46.184
+Electricity grid,Over generation / exports,104.453
+Electricity grid,Heating and cooling - homes,113.726
+Electricity grid,H2 conversion,27.14
+Electricity grid,Industry,342.165
+Electricity grid,Road transport,37.797
+Electricity grid,Agriculture,4.412
+Electricity grid,Heating and cooling - commercial,40.858
+Electricity grid,Losses,56.691
+Electricity grid,Rail transport,7.863
+Electricity grid,Lighting & appliances - commercial,90.008
+Electricity grid,Lighting & appliances - homes,93.494
+Gas imports,Ngas,40.719
+Gas reserves,Ngas,82.233
+Gas,Heating and cooling - commercial,0.129
+Gas,Losses,1.401
+Gas,Thermal generation,151.891
+Gas,Agriculture,2.096
+Gas,Industry,48.58
+Geothermal,Electricity grid,7.013
+H2 conversion,H2,20.897
+H2 conversion,Losses,6.242
+H2,Road transport,20.897
+Hydro,Electricity grid,6.995
+Liquid,Industry,121.066
+Liquid,International shipping,128.69
+Liquid,Road transport,135.835
+Liquid,Domestic aviation,14.458
+Liquid,International aviation,206.267
+Liquid,Agriculture,3.64
+Liquid,National navigation,33.218
+Liquid,Rail transport,4.413
+Marine algae,Bio-conversion,4.375
+Ngas,Gas,122.952
+Nuclear,Thermal generation,839.978
+Oil imports,Oil,504.287
+Oil reserves,Oil,107.703
+Oil,Liquid,611.99
+Other waste,Solid,56.587
+Other waste,Bio-conversion,77.81
+Pumped heat,Heating and cooling - homes,193.026
+Pumped heat,Heating and cooling - commercial,70.672
+Solar PV,Electricity grid,59.901
+Solar Thermal,Heating and cooling - homes,19.263
+Solar,Solar Thermal,19.263
+Solar,Solar PV,59.901
+Solid,Agriculture,0.882
+Solid,Thermal generation,400.12
+Solid,Industry,46.477
+Thermal generation,Electricity grid,525.531
+Thermal generation,Losses,787.129
+Thermal generation,District heating,79.329
+Tidal,Electricity grid,9.452
+UK land based bioenergy,Bio-conversion,182.01
+Wave,Electricity grid,19.013
+Wind,Electricity grid,289.366
+```
+
+:::
+
+## Syntax
+
+The idea behind syntax is that a user types `sankey-beta` keyword first, then pastes raw CSV below and get the result.
+
+It implements CSV standard as [described here](https://www.ietf.org/rfc/rfc4180.txt) with subtle **differences**:
+
+- CSV must contain **3 columns only**
+- It is **allowed** to have **empty lines** without comma separators for visual purposes
+
+### Basic
+
+It is implied that 3 columns inside CSV should represent `source`, `target` and `value` accordingly:
+
+```mermaid-example
+sankey-beta
+
+%% source,target,value
+Electricity grid,Over generation / exports,104.453
+Electricity grid,Heating and cooling - homes,113.726
+Electricity grid,H2 conversion,27.14
+```
+
+```mermaid
+sankey-beta
+
+%% source,target,value
+Electricity grid,Over generation / exports,104.453
+Electricity grid,Heating and cooling - homes,113.726
+Electricity grid,H2 conversion,27.14
+```
+
+```mermaid-example
+sankey-beta
+
+%% source,target,value
+Electricity grid,Over generation / exports,104.453
+Electricity grid,Heating and cooling - homes,113.726
+Electricity grid,H2 conversion,27.14
+```
+
+```mermaid
+sankey-beta
+
+%% source,target,value
+Electricity grid,Over generation / exports,104.453
+Electricity grid,Heating and cooling - homes,113.726
+Electricity grid,H2 conversion,27.14
+```
+
+### Empty Lines
+
+CSV does not support empty lines without comma delimeters by default. But you can add them if needed:
+
+```mermaid-example
+sankey-beta
+
+Bio-conversion,Losses,26.862
+
+Bio-conversion,Solid,280.322
+
+Bio-conversion,Gas,81.144
+```
+
+```mermaid
+sankey-beta
+
+Bio-conversion,Losses,26.862
+
+Bio-conversion,Solid,280.322
+
+Bio-conversion,Gas,81.144
+```
+
+```mermaid-example
+sankey-beta
+
+Bio-conversion,Losses,26.862
+
+Bio-conversion,Solid,280.322
+
+Bio-conversion,Gas,81.144
+```
+
+```mermaid
+sankey-beta
+
+Bio-conversion,Losses,26.862
+
+Bio-conversion,Solid,280.322
+
+Bio-conversion,Gas,81.144
+```
+
+### Commas
+
+If you need to have a comma, wrap it in double quotes:
+
+```mermaid-example
+sankey-beta
+
+Pumped heat,"Heating and cooling, homes",193.026
+Pumped heat,"Heating and cooling, commercial",70.672
+```
+
+```mermaid
+sankey-beta
+
+Pumped heat,"Heating and cooling, homes",193.026
+Pumped heat,"Heating and cooling, commercial",70.672
+```
+
+```mermaid-example
+sankey-beta
+
+Pumped heat,"Heating and cooling, homes",193.026
+Pumped heat,"Heating and cooling, commercial",70.672
+```
+
+```mermaid
+sankey-beta
+
+Pumped heat,"Heating and cooling, homes",193.026
+Pumped heat,"Heating and cooling, commercial",70.672
+```
+
+### Double Quotes
+
+If you need to have double quote, put a pair of them inside quoted string:
+
+```mermaid-example
+sankey-beta
+
+Pumped heat,"Heating and cooling, ""homes""",193.026
+Pumped heat,"Heating and cooling, ""commercial""",70.672
+```
+
+```mermaid
+sankey-beta
+
+Pumped heat,"Heating and cooling, ""homes""",193.026
+Pumped heat,"Heating and cooling, ""commercial""",70.672
+```
+
+```mermaid-example
+sankey-beta
+
+Pumped heat,"Heating and cooling, ""homes""",193.026
+Pumped heat,"Heating and cooling, ""commercial""",70.672
+```
+
+```mermaid
+sankey-beta
+
+Pumped heat,"Heating and cooling, ""homes""",193.026
+Pumped heat,"Heating and cooling, ""commercial""",70.672
+```
+
+## Configuration
+
+You can customize link colors, node alignments and diagram dimensions.
+
+```html
+<script>
+  const config = {
+    startOnLoad: true,
+    securityLevel: 'loose',
+    sankey: {
+      width: 800,
+      height: 400,
+      linkColor: 'source',
+      nodeAlignment: 'left',
+    },
+  };
+  mermaid.initialize(config);
+</script>
+```
+
+### Links Coloring
+
+You can adjust links' color by setting `linkColor` to one of those:
+
+- `source` - link will be of a source node color
+- `target` - link will be of a target node color
+- `gradient` - link color will be smoothly transient between source and target node colors
+- hex code of color, like `#a1a1a1`
+
+### Node Alignment
+
+Graph layout can be changed by setting `nodeAlignment` to:
+
+- `justify`
+- `center`
+- `left`
+- `right`

docs/syntax/stateDiagram.md

@@ -487,7 +487,7 @@ where
 - the second _property_ is `color` and its _value_ is `white`
 - the third _property_ is `font-weight` and its _value_ is `bold`
 - the fourth _property_ is `stroke-width` and its _value_ is `2px`
-- the fifth _property_ is `stroke` and its _value_ is `yello`
+- the fifth _property_ is `stroke` and its _value_ is `yellow`
 
 ### Apply classDef styles to states
 

package.json

@@ -1,7 +1,7 @@
 {
   "name": "mermaid-monorepo",
   "private": true,
-  "version": "10.2.3",
+  "version": "10.2.4",
   "description": "Markdownish syntax for generating flowcharts, sequence diagrams, class diagrams, gantt charts and git graphs.",
   "type": "module",
   "packageManager": "pnpm@8.6.5",
@@ -22,7 +22,7 @@
     "build:watch": "pnpm build:vite --watch",
     "build": "pnpm run -r clean && pnpm build:types && pnpm build:vite",
     "dev": "concurrently \"pnpm build:vite --watch\" \"ts-node-esm .vite/server.ts\"",
-    "dev:coverage": "VITE_COVERAGE=true pnpm dev",
+    "dev:coverage": "pnpm coverage:cypress:clean && VITE_COVERAGE=true pnpm dev",
     "release": "pnpm build",
     "lint": "eslint --cache --cache-strategy content --ignore-path .gitignore . && pnpm lint:jison && prettier --cache --check .",
     "lint:fix": "eslint --cache --cache-strategy content --fix --ignore-path .gitignore . && prettier --write . && ts-node-esm scripts/fixCSpell.ts",
@@ -31,7 +31,8 @@
     "cypress": "cypress run",
     "cypress:open": "cypress open",
     "e2e": "start-server-and-test dev http://localhost:9000/ cypress",
-    "e2e:coverage": "VITE_COVERAGE=true pnpm e2e",
+    "coverage:cypress:clean": "rimraf .nyc_output coverage/cypress",
+    "e2e:coverage": "pnpm coverage:cypress:clean && VITE_COVERAGE=true pnpm e2e",
     "coverage:merge": "ts-node-esm scripts/coverage.ts",
     "coverage": "pnpm test:coverage --run && pnpm e2e:coverage && pnpm coverage:merge",
     "ci": "vitest run",
@@ -77,7 +78,7 @@
     "@types/rollup-plugin-visualizer": "^4.2.1",
     "@typescript-eslint/eslint-plugin": "^5.59.0",
     "@typescript-eslint/parser": "^5.59.0",
-    "@vitest/coverage-istanbul": "^0.32.2",
+    "@vitest/coverage-v8": "^0.32.2",
     "@vitest/spy": "^0.32.2",
     "@vitest/ui": "^0.32.2",
     "concurrently": "^8.0.1",

packages/mermaid/package.json

@@ -1,6 +1,6 @@
 {
   "name": "mermaid",
-  "version": "10.2.3",
+  "version": "10.2.4",
   "description": "Markdown-ish syntax for generating flowcharts, sequence diagrams, class diagrams, gantt charts and git graphs.",
   "type": "module",
   "module": "./dist/mermaid.core.mjs",
@@ -53,13 +53,16 @@
   },
   "dependencies": {
     "@braintree/sanitize-url": "^6.0.2",
+    "@types/d3-scale": "^4.0.3",
+    "@types/d3-scale-chromatic": "^3.0.0",
     "cytoscape": "^3.23.0",
     "cytoscape-cose-bilkent": "^4.1.0",
     "cytoscape-fcose": "^2.1.0",
     "d3": "^7.4.0",
+    "d3-sankey": "^0.12.3",
     "dagre-d3-es": "7.0.10",
     "dayjs": "^1.11.7",
-    "dompurify": "3.0.3",
+    "dompurify": "3.0.4",
     "elkjs": "^0.8.2",
     "khroma": "^2.0.0",
     "lodash-es": "^4.17.21",
@@ -73,6 +76,7 @@
   "devDependencies": {
     "@types/cytoscape": "^3.19.9",
     "@types/d3": "^7.4.0",
+    "@types/d3-sankey": "^0.12.1",
     "@types/d3-selection": "^3.0.5",
     "@types/dompurify": "^3.0.2",
     "@types/jsdom": "^21.1.1",

packages/mermaid/src/assignWithDepth.js

@@ -20,7 +20,7 @@
  *   of src to dst in order.
  * @param {any} dst - The destination of the merge
  * @param {any} src - The source object(s) to merge into destination
- * @param {{ depth: number; clobber: boolean }} [config={ depth: 2, clobber: false }] - Depth: depth
+ * @param {{ depth: number; clobber: boolean }} [config] - Depth: depth
  *   to traverse within src and dst for merging - clobber: should dissimilar types clobber (default:
  *   { depth: 2, clobber: false }). Default is `{ depth: 2, clobber: false }`
  * @returns {any}

packages/mermaid/src/config.type.ts

@@ -32,6 +32,7 @@ export interface MermaidConfig {
   mindmap?: MindmapDiagramConfig;
   gitGraph?: GitGraphDiagramConfig;
   c4?: C4DiagramConfig;
+  sankey?: SankeyDiagramConfig;
   dompurifyConfig?: DOMPurify.Config;
   wrap?: boolean;
   fontSize?: number;
@@ -411,6 +412,26 @@ export interface FlowchartDiagramConfig extends BaseDiagramConfig {
   wrappingWidth?: number;
 }
 
+export enum SankeyLinkColor {
+  source = 'source',
+  target = 'target',
+  gradient = 'gradient',
+}
+
+export enum SankeyNodeAlignment {
+  left = 'left',
+  right = 'right',
+  center = 'center',
+  justify = 'justify',
+}
+
+export interface SankeyDiagramConfig extends BaseDiagramConfig {
+  width?: number;
+  height?: number;
+  linkColor?: SankeyLinkColor | string;
+  nodeAlignment?: SankeyNodeAlignment;
+}
+
 export interface FontConfig {
   fontSize?: string | number;
   fontFamily?: string;

packages/mermaid/src/defaultConfig.ts

@@ -1,5 +1,5 @@
 import theme from './themes/index.js';
-import { MermaidConfig } from './config.type.js';
+import { MermaidConfig, SankeyLinkColor, SankeyNodeAlignment } from './config.type.js';
 /**
  * **Configuration methods in Mermaid version 8.6.0 have been updated, to learn more[[click
  * here](8.6.0_docs.md)].**
@@ -2270,6 +2270,13 @@ const config: Partial<MermaidConfig> = {
     padding: 10,
     maxNodeWidth: 200,
   },
+  sankey: {
+    width: 800,
+    height: 400,
+    linkColor: SankeyLinkColor.gradient,
+    nodeAlignment: SankeyNodeAlignment.justify,
+    useMaxWidth: false,
+  },
   fontSize: 16,
 };
 

packages/mermaid/src/diagram-api/diagram-orchestration.ts

@@ -18,6 +18,7 @@ import errorDiagram from '../diagrams/error/errorDiagram.js';
 import flowchartElk from '../diagrams/flowchart/elk/detector.js';
 import timeline from '../diagrams/timeline/detector.js';
 import mindmap from '../diagrams/mindmap/detector.js';
+import sankey from '../diagrams/sankey/sankeyDetector.js';
 import { registerLazyLoadedDiagrams } from './detectType.js';
 import { registerDiagram } from './diagramAPI.js';
 
@@ -79,6 +80,7 @@ export const addDiagrams = () => {
     stateV2,
     state,
     journey,
-    quadrantChart
+    quadrantChart,
+    sankey
   );
 };

packages/mermaid/src/diagrams/class/classDb.ts

@@ -448,9 +448,8 @@ const getNamespaces = function (): NamespaceMap {
 export const addClassesToNamespace = function (id: string, classNames: string[]) {
   if (namespaces[id] !== undefined) {
     classNames.map((className) => {
+      classes[className].parent = id;
       namespaces[id].classes[className] = classes[className];
-      delete classes[className];
-      classCounter--;
     });
   }
 };

packages/mermaid/src/diagrams/class/classDiagram.spec.ts

@@ -1373,9 +1373,54 @@ class Class2
       parser.parse(str);
 
       const testNamespace = parser.yy.getNamespace('Namespace1');
+      const testClasses = parser.yy.getClasses();
       expect(Object.keys(testNamespace.classes).length).toBe(2);
       expect(Object.keys(testNamespace.children).length).toBe(0);
       expect(testNamespace.classes['Class1'].id).toBe('Class1');
+      expect(Object.keys(testClasses).length).toBe(2);
+    });
+
+    it('should add relations between classes of different namespaces', function () {
+      const str = `classDiagram
+      A1 --> B1
+      namespace A {
+        class A1 {
+          +foo : string
+        }
+        class A2 {
+          +bar : int
+        }
+      }
+      namespace B {
+        class B1 {
+          +foo : bool
+        }
+        class B2 {
+          +bar : float
+        }
+      }
+      A2 --> B2`;
+
+      parser.parse(str);
+      const testNamespaceA = parser.yy.getNamespace('A');
+      const testNamespaceB = parser.yy.getNamespace('B');
+      const testClasses = parser.yy.getClasses();
+      const testRelations = parser.yy.getRelations();
+      expect(Object.keys(testNamespaceA.classes).length).toBe(2);
+      expect(testNamespaceA.classes['A1'].members[0]).toBe('+foo : string');
+      expect(testNamespaceA.classes['A2'].members[0]).toBe('+bar : int');
+      expect(Object.keys(testNamespaceB.classes).length).toBe(2);
+      expect(testNamespaceB.classes['B1'].members[0]).toBe('+foo : bool');
+      expect(testNamespaceB.classes['B2'].members[0]).toBe('+bar : float');
+      expect(Object.keys(testClasses).length).toBe(4);
+      expect(testClasses['A1'].parent).toBe('A');
+      expect(testClasses['A2'].parent).toBe('A');
+      expect(testClasses['B1'].parent).toBe('B');
+      expect(testClasses['B2'].parent).toBe('B');
+      expect(testRelations[0].id1).toBe('A1');
+      expect(testRelations[0].id2).toBe('B1');
+      expect(testRelations[1].id1).toBe('A2');
+      expect(testRelations[1].id2).toBe('B2');
     });
   });
 

packages/mermaid/src/diagrams/class/classRenderer-v2.ts

@@ -93,52 +93,51 @@ export const addClasses = function (
   log.info(classes);
 
   // Iterate through each item in the vertex object (containing all the vertices found) in the graph definition
-  keys.forEach(function (id) {
-    const vertex = classes[id];
+  keys
+    .filter((id) => classes[id].parent == parent)
+    .forEach(function (id) {
+      const vertex = classes[id];
 
-    /**
-     * Variable for storing the classes for the vertex
-     */
-    let cssClassStr = '';
-    if (vertex.cssClasses.length > 0) {
-      cssClassStr = cssClassStr + ' ' + vertex.cssClasses.join(' ');
-    }
+      /**
+       * Variable for storing the classes for the vertex
+       */
+      const cssClassStr = vertex.cssClasses.join(' ');
 
-    const styles = { labelStyle: '', style: '' }; //getStylesFromArray(vertex.styles);
+      const styles = { labelStyle: '', style: '' }; //getStylesFromArray(vertex.styles);
 
-    // Use vertex id as text in the box if no text is provided by the graph definition
-    const vertexText = vertex.label ?? vertex.id;
-    const radius = 0;
-    const shape = 'class_box';
+      // Use vertex id as text in the box if no text is provided by the graph definition
+      const vertexText = vertex.label ?? vertex.id;
+      const radius = 0;
+      const shape = 'class_box';
 
-    // Add the node
-    const node = {
-      labelStyle: styles.labelStyle,
-      shape: shape,
-      labelText: sanitizeText(vertexText),
-      classData: vertex,
-      rx: radius,
-      ry: radius,
-      class: cssClassStr,
-      style: styles.style,
-      id: vertex.id,
-      domId: vertex.domId,
-      tooltip: diagObj.db.getTooltip(vertex.id, parent) || '',
-      haveCallback: vertex.haveCallback,
-      link: vertex.link,
-      width: vertex.type === 'group' ? 500 : undefined,
-      type: vertex.type,
-      // TODO V10: Flowchart ? Keeping flowchart for backwards compatibility. Remove in next major release
-      padding: getConfig().flowchart?.padding ?? getConfig().class?.padding,
-    };
-    g.setNode(vertex.id, node);
+      // Add the node
+      const node = {
+        labelStyle: styles.labelStyle,
+        shape: shape,
+        labelText: sanitizeText(vertexText),
+        classData: vertex,
+        rx: radius,
+        ry: radius,
+        class: cssClassStr,
+        style: styles.style,
+        id: vertex.id,
+        domId: vertex.domId,
+        tooltip: diagObj.db.getTooltip(vertex.id, parent) || '',
+        haveCallback: vertex.haveCallback,
+        link: vertex.link,
+        width: vertex.type === 'group' ? 500 : undefined,
+        type: vertex.type,
+        // TODO V10: Flowchart ? Keeping flowchart for backwards compatibility. Remove in next major release
+        padding: getConfig().flowchart?.padding ?? getConfig().class?.padding,
+      };
+      g.setNode(vertex.id, node);
 
-    if (parent) {
-      g.setParent(vertex.id, parent);
-    }
+      if (parent) {
+        g.setParent(vertex.id, parent);
+      }
 
-    log.info('setNode', node);
-  });
+      log.info('setNode', node);
+    });
 };
 
 /**

packages/mermaid/src/diagrams/class/classTypes.ts

@@ -7,6 +7,7 @@ export interface ClassNode {
   members: string[];
   annotations: string[];
   domId: string;
+  parent?: string;
   link?: string;
   linkTarget?: string;
   haveCallback?: boolean;

packages/mermaid/src/diagrams/flowchart/parser/flow-style.spec.js

@@ -338,4 +338,20 @@ describe('[Style] when parsing', () => {
 
     expect(edges[0].type).toBe('arrow_point');
   });
+
+  it('should handle multiple vertices with style', function () {
+    const res = flow.parser.parse(`
+    graph TD
+      classDef C1 stroke-dasharray:4
+      classDef C2 stroke-dasharray:6
+      A & B:::C1 & D:::C1 --> E:::C2
+    `);
+
+    const vert = flow.parser.yy.getVertices();
+
+    expect(vert['A'].classes.length).toBe(0);
+    expect(vert['B'].classes[0]).toBe('C1');
+    expect(vert['D'].classes[0]).toBe('C1');
+    expect(vert['E'].classes[0]).toBe('C2');
+  });
 });

packages/mermaid/src/diagrams/flowchart/parser/flow.jison

@@ -359,7 +359,7 @@ statement
 
 separator: NEWLINE | SEMI | EOF ;
 
-
+ 
 verticeStatement: verticeStatement link node
         { /* console.warn('vs',$1.stmt,$3); */ yy.addLink($1.stmt,$3,$2); $$ = { stmt: $3, nodes: $3.concat($1.nodes) } }
     |  verticeStatement link node spaceList
@@ -368,12 +368,16 @@ verticeStatement: verticeStatement link node
     |node { /*console.warn('noda', $1);*/ $$ = {stmt: $1, nodes:$1 }}
     ;
 
-node: vertex
+node: styledVertex
         { /* console.warn('nod', $1); */ $$ = [$1];}
-    | node spaceList AMP spaceList vertex
+    | node spaceList AMP spaceList styledVertex
         { $$ = $1.concat($5); /* console.warn('pip', $1[0], $5, $$); */ }
+    ;
+
+styledVertex: vertex
+        { /* console.warn('nod', $1); */ $$ = $1;}
     | vertex STYLE_SEPARATOR idString
-        {$$ = [$1];yy.setClass($1,$3)}
+        {$$ = $1;yy.setClass($1,$3)}
     ;
 
 vertex:  idString SQS text SQE

packages/mermaid/src/diagrams/sankey/parser/energy.csv

@@ -0,0 +1,99 @@
+%% There are leading and trailing spaces, do not crop
+    Agricultural 'waste',Bio-conversion,124.729   
+%% line with a comment
+
+%% Normal line
+Bio-conversion,Liquid,0.597
+
+%% Line with unquoted sankey keyword
+sankey,target,10
+
+%% Quoted sankey keyword
+"sankey",target,10
+
+%% Another normal line
+Bio-conversion,Losses,26.862
+
+%% Line with integer amount
+Bio-conversion,Solid,280
+
+%% Some blank lines in the middle of CSV
+
+
+%% Another normal line
+Bio-conversion,Gas,81.144
+
+%% Quoted line
+"Biofuel imports",Liquid,35
+
+%% Quoted line with escaped quotes inside
+"""Biomass imports""",Solid,35
+
+%% Lines containing commas inside
+%% Quoted and unquoted values should be equal in terms of graph
+"District heating","Heating and cooling, commercial",22.505
+District heating,"Heating and cooling, homes",46.184
+
+%% A bunch of lines, normal CSV
+Coal imports,Coal,11.606
+Coal reserves,Coal,63.965
+Coal,Solid,75.571
+District heating,Industry,10.639
+Electricity grid,Over generation / exports,104.453
+Electricity grid,Heating and cooling - homes,113.726
+Electricity grid,H2 conversion,27.14
+Electricity grid,Industry,342.165
+Electricity grid,Road transport,37.797
+Electricity grid,Agriculture,4.412
+Electricity grid,Heating and cooling - commercial,40.858
+Electricity grid,Losses,56.691
+Electricity grid,Rail transport,7.863
+Electricity grid,Lighting & appliances - commercial,90.008
+Electricity grid,Lighting & appliances - homes,93.494
+Gas imports,Ngas,40.719
+Gas reserves,Ngas,82.233
+Gas,Heating and cooling - commercial,0.129
+Gas,Losses,1.401
+Gas,Thermal generation,151.891
+Gas,Agriculture,2.096
+Gas,Industry,48.58
+Geothermal,Electricity grid,7.013
+H2 conversion,H2,20.897
+H2 conversion,Losses,6.242
+H2,Road transport,20.897
+Hydro,Electricity grid,6.995
+Liquid,Industry,121.066
+Liquid,International shipping,128.69
+Liquid,Road transport,135.835
+Liquid,Domestic aviation,14.458
+Liquid,International aviation,206.267
+Liquid,Agriculture,3.64
+Liquid,National navigation,33.218
+Liquid,Rail transport,4.413
+Marine algae,Bio-conversion,4.375
+Ngas,Gas,122.952
+Nuclear,Thermal generation,839.978
+Oil imports,Oil,504.287
+Oil reserves,Oil,107.703
+Oil,Liquid,611.99
+Other waste,Solid,56.587
+Other waste,Bio-conversion,77.81
+Pumped heat,Heating and cooling - homes,193.026
+Pumped heat,Heating and cooling - commercial,70.672
+Solar PV,Electricity grid,59.901
+Solar Thermal,Heating and cooling - homes,19.263
+Solar,Solar Thermal,19.263
+Solar,Solar PV,59.901
+Solid,Agriculture,0.882
+Solid,Thermal generation,400.12
+Solid,Industry,46.477
+Thermal generation,Electricity grid,525.531
+Thermal generation,Losses,787.129
+Thermal generation,District heating,79.329
+Tidal,Electricity grid,9.452
+UK land based bioenergy,Bio-conversion,182.01
+"""Wave""",Electricity grid,19.013
+"""Wind""",Electricity grid,289.366
+
+%% lines at the end, do not remove
+

packages/mermaid/src/diagrams/sankey/parser/sankey.jison

@@ -0,0 +1,69 @@
+/** mermaid */
+
+//---------------------------------------------------------
+// We support csv format as defined here:
+// https://www.ietf.org/rfc/rfc4180.txt
+// There are some minor changes for compliance with jison
+// We also parse only 3 columns: source,target,value
+// And allow blank lines for visual purposes
+//---------------------------------------------------------
+
+%lex
+
+%options case-insensitive
+%options easy_keword_rules
+
+%x escaped_text
+%x csv
+
+// as per section 6.1 of RFC 2234 [2]
+COMMA \u002C
+CR \u000D 
+LF \u000A
+CRLF \u000D\u000A
+ESCAPED_QUOTE \u0022
+DQUOTE \u0022
+TEXTDATA [\u0020-\u0021\u0023-\u002B\u002D-\u007E]
+
+%%
+
+<INITIAL>"sankey-beta"                         { this.pushState('csv'); return 'SANKEY'; }
+<INITIAL,csv><<EOF>>                           { return 'EOF' } // match end of file
+<INITIAL,csv>({CRLF}|{LF})                     { return 'NEWLINE' }
+<INITIAL,csv>{COMMA}                           { return 'COMMA' }
+<INITIAL,csv>{DQUOTE}                          { this.pushState('escaped_text'); return 'DQUOTE'; }
+<INITIAL,csv>{TEXTDATA}*                       { return 'NON_ESCAPED_TEXT' } 
+<INITIAL,csv,escaped_text>{DQUOTE}(?!{DQUOTE}) {this.popState('escaped_text'); return 'DQUOTE'; } // unescaped DQUOTE closes string
+<INITIAL,csv,escaped_text>({TEXTDATA}|{COMMA}|{CR}|{LF}|{DQUOTE}{DQUOTE})* { return 'ESCAPED_TEXT'; }
+
+/lex
+
+%start start
+
+%% // language grammar
+
+start: SANKEY NEWLINE csv opt_eof;
+
+csv: record csv_tail;
+csv_tail: NEWLINE csv | ;
+opt_eof: EOF | ;
+
+record
+  : field\[source] COMMA field\[target] COMMA field\[value] {
+      const source = yy.findOrCreateNode($source.trim().replaceAll('""', '"'));
+      const target = yy.findOrCreateNode($target.trim().replaceAll('""', '"'));
+      const value = parseFloat($value.trim());
+      yy.addLink(source,target,value);
+    } // parse only 3 fields, this is not part of CSV standard
+  ;
+
+field
+  : escaped { $$=$escaped; }
+  | non_escaped { $$=$non_escaped; }
+  ;
+
+escaped: DQUOTE ESCAPED_TEXT DQUOTE { $$=$ESCAPED_TEXT; };
+
+non_escaped: NON_ESCAPED_TEXT { $$=$NON_ESCAPED_TEXT; };
+
+

packages/mermaid/src/diagrams/sankey/parser/sankey.spec.ts

@@ -0,0 +1,24 @@
+// @ts-ignore: jison doesn't export types
+import sankey from './sankey.jison';
+import db from '../sankeyDB.js';
+import { cleanupComments } from '../../../diagram-api/comments.js';
+import { prepareTextForParsing } from '../sankeyUtils.js';
+import * as fs from 'fs';
+import * as path from 'path';
+
+describe('Sankey diagram', function () {
+  describe('when parsing an info graph it', function () {
+    beforeEach(function () {
+      sankey.parser.yy = db;
+      sankey.parser.yy.clear();
+    });
+
+    it('parses csv', async () => {
+      const csv = path.resolve(__dirname, './energy.csv');
+      const data = fs.readFileSync(csv, 'utf8');
+      const graphDefinition = prepareTextForParsing(cleanupComments('sankey-beta\n\n ' + data));
+
+      sankey.parser.parse(graphDefinition);
+    });
+  });
+});

packages/mermaid/src/diagrams/sankey/sankeyDB.ts

@@ -0,0 +1,81 @@
+import * as configApi from '../../config.js';
+import common from '../common/common.js';
+import {
+  setAccTitle,
+  getAccTitle,
+  getAccDescription,
+  setAccDescription,
+  setDiagramTitle,
+  getDiagramTitle,
+  clear as commonClear,
+} from '../../commonDb.js';
+
+// Sankey diagram represented by nodes and links between those nodes
+let links: SankeyLink[] = [];
+// Array of nodes guarantees their order
+let nodes: SankeyNode[] = [];
+// We also have to track nodes uniqueness (by ID)
+let nodesMap: Record<string, SankeyNode> = {};
+
+const clear = (): void => {
+  links = [];
+  nodes = [];
+  nodesMap = {};
+  commonClear();
+};
+
+class SankeyLink {
+  constructor(public source: SankeyNode, public target: SankeyNode, public value: number = 0) {}
+}
+
+/**
+ * @param source - Node where the link starts
+ * @param target - Node where the link ends
+ * @param value - number, float or integer, describes the amount to be passed
+ */
+const addLink = (source: SankeyNode, target: SankeyNode, value: number): void => {
+  links.push(new SankeyLink(source, target, value));
+};
+
+class SankeyNode {
+  constructor(public ID: string) {}
+}
+
+const findOrCreateNode = (ID: string): SankeyNode => {
+  ID = common.sanitizeText(ID, configApi.getConfig());
+
+  if (!nodesMap[ID]) {
+    nodesMap[ID] = new SankeyNode(ID);
+    nodes.push(nodesMap[ID]);
+  }
+  return nodesMap[ID];
+};
+
+const getNodes = () => nodes;
+const getLinks = () => links;
+
+const getGraph = () => ({
+  nodes: nodes.map((node) => ({ id: node.ID })),
+  links: links.map((link) => ({
+    source: link.source.ID,
+    target: link.target.ID,
+    value: link.value,
+  })),
+});
+
+export default {
+  nodesMap,
+  getConfig: () => configApi.getConfig().sankey,
+  getNodes,
+  getLinks,
+  getGraph,
+  addLink,
+  findOrCreateNode,
+  getAccTitle,
+  setAccTitle,
+  getAccDescription,
+  setAccDescription,
+  getDiagramTitle,
+  setDiagramTitle,
+  clear,
+};

packages/mermaid/src/diagrams/sankey/sankeyDetector.ts

@@ -0,0 +1,20 @@
+import type { DiagramDetector, ExternalDiagramDefinition } from '../../diagram-api/types.js';
+
+const id = 'sankey';
+
+const detector: DiagramDetector = (txt) => {
+  return /^\s*sankey-beta/.test(txt);
+};
+
+const loader = async () => {
+  const { diagram } = await import('./sankeyDiagram.js');
+  return { id, diagram };
+};
+
+const plugin: ExternalDiagramDefinition = {
+  id,
+  detector,
+  loader,
+};
+
+export default plugin;

packages/mermaid/src/diagrams/sankey/sankeyDiagram.ts

@@ -0,0 +1,15 @@
+import { DiagramDefinition } from '../../diagram-api/types.js';
+// @ts-ignore: jison doesn't export types
+import parser from './parser/sankey.jison';
+import db from './sankeyDB.js';
+import renderer from './sankeyRenderer.js';
+import { prepareTextForParsing } from './sankeyUtils.js';
+
+const originalParse = parser.parse.bind(parser);
+parser.parse = (text: string) => originalParse(prepareTextForParsing(text));
+
+export const diagram: DiagramDefinition = {
+  parser,
+  db,
+  renderer,
+};

packages/mermaid/src/diagrams/sankey/sankeyRenderer.ts

@@ -0,0 +1,205 @@
+import { Diagram } from '../../Diagram.js';
+import * as configApi from '../../config.js';
+
+import {
+  select as d3select,
+  scaleOrdinal as d3scaleOrdinal,
+  schemeTableau10 as d3schemeTableau10,
+} from 'd3';
+
+import {
+  sankey as d3Sankey,
+  sankeyLinkHorizontal as d3SankeyLinkHorizontal,
+  sankeyLeft as d3SankeyLeft,
+  sankeyRight as d3SankeyRight,
+  sankeyCenter as d3SankeyCenter,
+  sankeyJustify as d3SankeyJustify,
+  SankeyNode as d3SankeyNode,
+} from 'd3-sankey';
+import { configureSvgSize } from '../../setupGraphViewbox.js';
+import { Uid } from '../../rendering-util/uid.js';
+import { SankeyLinkColor, SankeyNodeAlignment } from '../../config.type.js';
+
+// Map config options to alignment functions
+const alignmentsMap: Record<
+  SankeyNodeAlignment,
+  (node: d3SankeyNode<object, object>, n: number) => number
+> = {
+  [SankeyNodeAlignment.left]: d3SankeyLeft,
+  [SankeyNodeAlignment.right]: d3SankeyRight,
+  [SankeyNodeAlignment.center]: d3SankeyCenter,
+  [SankeyNodeAlignment.justify]: d3SankeyJustify,
+};
+
+/**
+ * Draws Sankey diagram.
+ *
+ * @param text - The text of the diagram
+ * @param id - The id of the diagram which will be used as a DOM element id¨
+ * @param _version - Mermaid version from package.json
+ * @param diagObj - A standard diagram containing the db and the text and type etc of the diagram
+ */
+export const draw = function (text: string, id: string, _version: string, diagObj: Diagram): void {
+  // Get Sankey config
+  const { securityLevel, sankey: conf } = configApi.getConfig();
+  const defaultSankeyConfig = configApi!.defaultConfig!.sankey!;
+
+  // TODO:
+  // This code repeats for every diagram
+  // Figure out what is happening there, probably it should be separated
+  // The main thing is svg object that is a d3 wrapper for svg operations
+  //
+  let sandboxElement: any;
+  if (securityLevel === 'sandbox') {
+    sandboxElement = d3select('#i' + id);
+  }
+  const root =
+    securityLevel === 'sandbox'
+      ? d3select(sandboxElement.nodes()[0].contentDocument.body)
+      : d3select('body');
+  // @ts-ignore TODO root.select is not callable
+  const svg = securityLevel === 'sandbox' ? root.select(`[id="${id}"]`) : d3select(`[id="${id}"]`);
+
+  // Establish svg dimensions and get width and height
+  //
+  const width = conf?.width || defaultSankeyConfig.width!;
+  const height = conf?.height || defaultSankeyConfig.width!;
+  const useMaxWidth = conf?.useMaxWidth || defaultSankeyConfig.useMaxWidth!;
+  const nodeAlignment = conf?.nodeAlignment || defaultSankeyConfig.nodeAlignment!;
+
+  // FIX: using max width prevents height from being set, is it intended?
+  // to add height directly one can use `svg.attr('height', height)`
+  //
+  // @ts-ignore TODO: svg type vs selection mismatch
+  configureSvgSize(svg, height, width, useMaxWidth);
+
+  // Prepare data for construction based on diagObj.db
+  // This must be a mutable object with `nodes` and `links` properties:
+  //
+  //    {
+  //      "nodes": [ { "id": "Alice" }, { "id": "Bob" }, { "id": "Carol" } ],
+  //      "links": [ { "source": "Alice", "target": "Bob", "value": 23 }, { "source": "Bob", "target": "Carol", "value": 43 } ]
+  //    }
+  //
+  // @ts-ignore TODO: db should be coerced to sankey DB type
+  const graph = diagObj.db.getGraph();
+
+  // Get alignment function
+  const nodeAlign = alignmentsMap[nodeAlignment];
+
+  // Construct and configure a Sankey generator
+  // That will be a function that calculates nodes and links dimensions
+  //
+  const nodeWidth = 10;
+  const sankey = d3Sankey()
+    .nodeId((d: any) => d.id) // we use 'id' property to identify node
+    .nodeWidth(nodeWidth)
+    .nodePadding(10)
+    .nodeAlign(nodeAlign)
+    .extent([
+      [0, 0],
+      [width, height],
+    ]);
+
+  // Compute the Sankey layout: calculate nodes and links positions
+  // Our `graph` object will be mutated by this and enriched with other properties
+  //
+  sankey(graph);
+
+  // Get color scheme for the graph
+  const colorScheme = d3scaleOrdinal(d3schemeTableau10);
+
+  // Create rectangles for nodes
+  svg
+    .append('g')
+    .attr('class', 'nodes')
+    .selectAll('.node')
+    .data(graph.nodes)
+    .join('g')
+    .attr('class', 'node')
+    .attr('id', (d: any) => (d.uid = Uid.next('node-')).id)
+    .attr('transform', function (d: any) {
+      return 'translate(' + d.x0 + ',' + d.y0 + ')';
+    })
+    .attr('x', (d: any) => d.x0)
+    .attr('y', (d: any) => d.y0)
+    .append('rect')
+    .attr('height', (d: any) => {
+      return d.y1 - d.y0;
+    })
+    .attr('width', (d: any) => d.x1 - d.x0)
+    .attr('fill', (d: any) => colorScheme(d.id));
+
+  // Create labels for nodes
+  svg
+    .append('g')
+    .attr('class', 'node-labels')
+    .attr('font-family', 'sans-serif')
+    .attr('font-size', 14)
+    .selectAll('text')
+    .data(graph.nodes)
+    .join('text')
+    .attr('x', (d: any) => (d.x0 < width / 2 ? d.x1 + 6 : d.x0 - 6))
+    .attr('y', (d: any) => (d.y1 + d.y0) / 2)
+    .attr('dy', '0.35em')
+    .attr('text-anchor', (d: any) => (d.x0 < width / 2 ? 'start' : 'end'))
+    .text((d: any) => d.id);
+
+  // Creates the paths that represent the links.
+  const link = svg
+    .append('g')
+    .attr('class', 'links')
+    .attr('fill', 'none')
+    .attr('stroke-opacity', 0.5)
+    .selectAll('.link')
+    .data(graph.links)
+    .join('g')
+    .attr('class', 'link')
+    .style('mix-blend-mode', 'multiply');
+
+  const linkColor = conf?.linkColor || SankeyLinkColor.gradient;
+
+  if (linkColor === SankeyLinkColor.gradient) {
+    const gradient = link
+      .append('linearGradient')
+      .attr('id', (d: any) => (d.uid = Uid.next('linearGradient-')).id)
+      .attr('gradientUnits', 'userSpaceOnUse')
+      .attr('x1', (d: any) => d.source.x1)
+      .attr('x2', (d: any) => d.target.x0);
+
+    gradient
+      .append('stop')
+      .attr('offset', '0%')
+      .attr('stop-color', (d: any) => colorScheme(d.source.id));
+
+    gradient
+      .append('stop')
+      .attr('offset', '100%')
+      .attr('stop-color', (d: any) => colorScheme(d.target.id));
+  }
+
+  let coloring: any;
+  switch (linkColor) {
+    case SankeyLinkColor.gradient:
+      coloring = (d: any) => d.uid;
+      break;
+    case SankeyLinkColor.source:
+      coloring = (d: any) => colorScheme(d.source.id);
+      break;
+    case SankeyLinkColor.target:
+      coloring = (d: any) => colorScheme(d.target.id);
+      break;
+    default:
+      coloring = linkColor;
+  }
+
+  link
+    .append('path')
+    .attr('d', d3SankeyLinkHorizontal())
+    .attr('stroke', coloring)
+    .attr('stroke-width', (d: any) => Math.max(1, d.width));
+};
+
+export default {
+  draw,
+};

packages/mermaid/src/diagrams/sankey/sankeyUtils.ts

@@ -0,0 +1,8 @@
+export const prepareTextForParsing = (text: string): string => {
+  const textToParse = text
+    .replaceAll(/^[^\S\n\r]+|[^\S\n\r]+$/g, '') // remove all trailing spaces for each row
+    .replaceAll(/([\n\r])+/g, '\n') // remove empty lines duplicated
+    .trim();
+
+  return textToParse;
+};

packages/mermaid/src/diagrams/state/stateRenderer-v2.js

@@ -358,7 +358,7 @@ const setupDoc = (g, parentParsedItem, doc, diagramStates, diagramDb, altFlag) =
  * Look through all of the documents (docs) in the parsedItems
  * Because is a _document_ direction, the default direction is not necessarily the same as the overall default _diagram_ direction.
  * @param {object[]} parsedItem - the parsed statement item to look through
- * @param [defaultDir=DEFAULT_NESTED_DOC_DIR] - the direction to use if none is found
+ * @param [defaultDir] - the direction to use if none is found
  * @returns {string}
  */
 const getDir = (parsedItem, defaultDir = DEFAULT_NESTED_DOC_DIR) => {

packages/mermaid/src/docs/.vitepress/config.ts

@@ -138,6 +138,7 @@ function sidebarSyntax() {
         { text: 'Mindmaps 🔥', link: '/syntax/mindmap' },
         { text: 'Timeline 🔥', link: '/syntax/timeline' },
         { text: 'Zenuml 🔥', link: '/syntax/zenuml' },
+        { text: 'Sankey 🔥', link: '/syntax/sankey' },
         { text: 'Other Examples', link: '/syntax/examples' },
       ],
     },

packages/mermaid/src/docs/.vitepress/scripts/fetch-avatars.ts

@@ -18,7 +18,7 @@ async function download(url: string, fileName: URL) {
     const image = await fetch(url);
     await writeFile(fileName, Buffer.from(await image.arrayBuffer()));
   } catch (error) {
-    console.error(error);
+    console.error('failed to load', url, error);
   }
 }
 
@@ -26,10 +26,13 @@ async function fetchAvatars() {
   await mkdir(fileURLToPath(new URL(getAvatarPath('none'))).replace('none.png', ''), {
     recursive: true,
   });
+
   contributors = JSON.parse(await readFile(pathContributors, { encoding: 'utf-8' }));
-  for (const name of contributors) {
-    await download(`https://github.com/${name}.png?size=100`, getAvatarPath(name));
-  }
+  let avatars = contributors.map((name) => {
+    download(`https://github.com/${name}.png?size=100`, getAvatarPath(name));
+  });
+
+  await Promise.all(avatars);
 }
 
 fetchAvatars();

packages/mermaid/src/docs/.vitepress/scripts/fetch-contributors.ts

@@ -10,23 +10,27 @@ interface Contributor {
 
 async function fetchContributors() {
   const collaborators: string[] = [];
-  let page = 1;
-  let data: Contributor[] = [];
-  do {
-    const response = await fetch(
-      `https://api.github.com/repos/mermaid-js/mermaid/contributors?per_page=100&page=${page}`,
-      {
-        method: 'GET',
-        headers: {
-          'content-type': 'application/json',
-        },
-      }
-    );
-    data = await response.json();
-    collaborators.push(...data.map((i) => i.login));
-    console.log(`Fetched page ${page}`);
-    page++;
-  } while (data.length === 100);
+  try {
+    let page = 1;
+    let data: Contributor[] = [];
+    do {
+      const response = await fetch(
+        `https://api.github.com/repos/mermaid-js/mermaid/contributors?per_page=100&page=${page}`,
+        {
+          method: 'GET',
+          headers: {
+            'content-type': 'application/json',
+          },
+        }
+      );
+      data = await response.json();
+      collaborators.push(...data.map((i) => i.login));
+      console.log(`Fetched page ${page}`);
+      page++;
+    } while (data.length === 100);
+  } catch (e) {
+    /* contributors fetching failure must not hinder docs development */
+  }
   return collaborators.filter((name) => !name.includes('[bot]'));
 }
 

packages/mermaid/src/docs/config/theming.md

@@ -55,9 +55,9 @@ To make a custom theme, modify `themeVariables` via `init`.
 
 You will need to use the [base](#available-themes) theme as it is the only modifiable theme.
 
-| Parameter      | Description                          | Type   | Properties                                                                                          |
-| -------------- | ------------------------------------ | ------ | --------------------------------------------------------------------------------------------------- |
-| themeVariables | Modifiable with the `init` directive | Object | `primaryColor`, `primaryTextColor`, `lineColor` ([see full list](#theme-variables-reference-table)) |
+| Parameter      | Description                          | Type   | Properties                                                                          |
+| -------------- | ------------------------------------ | ------ | ----------------------------------------------------------------------------------- |
+| themeVariables | Modifiable with the `init` directive | Object | `primaryColor`, `primaryTextColor`, `lineColor` ([see full list](#theme-variables)) |
 
 Example of modifying `themeVariables` using the `init` directive:
 

packages/mermaid/src/docs/ecosystem/integrations.md

@@ -155,6 +155,8 @@ They also serve as proof of concept, for the variety of things that can be built
   - [Nano Mermaid](https://github.com/Yash-Singh1/nano-mermaid)
 - [CKEditor](https://github.com/ckeditor/ckeditor5)
   - [CKEditor 5 Mermaid plugin](https://github.com/ckeditor/ckeditor5-mermaid)
+- [Standard Notes](https://standardnotes.com/)
+  - [sn-mermaid](https://github.com/nienow/sn-mermaid)
 
 ## Document Generation
 

packages/mermaid/src/docs/news/announcements.md

@@ -1,7 +1,7 @@
 # Announcements
 
-## [subhash-halder contributed quadrant charts so you can show your manager what to select - just like the strategy consultants at BCG do](https://www.mermaidchart.com/blog/posts/subhash-halder-contributed-quadrant-charts-so-you-can-show-your-manager-what-to-select-just-like-the-strategy-consultants-at-bcg-do/)
+## [Sequence diagrams, the only good thing UML brought to software development](https://www.mermaidchart.com/blog/posts/sequence-diagrams-the-good-thing-uml-brought-to-software-development/)
 
-8 June 2023 · 7 mins
+15 June 2023 · 12 mins
 
-A quadrant chart is a useful diagram that helps users visualize data and identify patterns in a data set.
+Sequence diagrams really shine when you’re documenting different parts of a system and the various ways these parts interact with each other.

packages/mermaid/src/docs/news/blog.md

@@ -1,5 +1,11 @@
 # Blog
 
+## [Sequence diagrams, the only good thing UML brought to software development](https://www.mermaidchart.com/blog/posts/sequence-diagrams-the-good-thing-uml-brought-to-software-development/)
+
+15 June 2023 · 12 mins
+
+Sequence diagrams really shine when you’re documenting different parts of a system and the various ways these parts interact with each other.
+
 ## [subhash-halder contributed quadrant charts so you can show your manager what to select - just like the strategy consultants at BCG do](https://www.mermaidchart.com/blog/posts/subhash-halder-contributed-quadrant-charts-so-you-can-show-your-manager-what-to-select-just-like-the-strategy-consultants-at-bcg-do/)
 
 8 June 2023 · 7 mins

packages/mermaid/src/docs/syntax/gantt.md

@@ -19,13 +19,13 @@ Mermaid can render Gantt diagrams as SVG, PNG or a MarkDown link that can be pas
 ```mermaid-example
 gantt
     title A Gantt Diagram
-    dateFormat  YYYY-MM-DD
+    dateFormat YYYY-MM-DD
     section Section
-    A task           :a1, 2014-01-01, 30d
-    Another task     :after a1  , 20d
+        A task          :a1, 2014-01-01, 30d
+        Another task    :after a1, 20d
     section Another
-    Task in sec      :2014-01-12  , 12d
-    another task      : 24d
+        Task in Another :2014-01-12, 12d
+        another task    :24d
 ```
 
 ## Syntax
@@ -66,10 +66,10 @@ gantt
 It is possible to set multiple dependencies separated by space:
 
 ```mermaid-example
-    gantt
-        apple :a, 2017-07-20, 1w
-        banana :crit, b, 2017-07-23, 1d
-        cherry :active, c, after b a, 1d
+gantt
+    apple :a, 2017-07-20, 1w
+    banana :crit, b, 2017-07-23, 1d
+    cherry :active, c, after b a, 1d
 ```
 
 ### Title
@@ -88,12 +88,12 @@ You can add milestones to the diagrams. Milestones differ from tasks as they rep
 
 ```mermaid-example
 gantt
-dateFormat HH:mm
-axisFormat %H:%M
-Initial milestone : milestone, m1, 17:49,2min
-taska2 : 10min
-taska3 : 5min
-Final milestone : milestone, m2, 18:14, 2min
+    dateFormat HH:mm
+    axisFormat %H:%M
+    Initial milestone : milestone, m1, 17:49, 2m
+    Task A : 10m
+    Task B : 5m
+    Final milestone : milestone, m2, 18:08, 4m
 ```
 
 ## Setting dates
@@ -214,15 +214,14 @@ Comments can be entered within a gantt chart, which will be ignored by the parse
 ```mermaid
 gantt
     title A Gantt Diagram
-    %% this is a comment
-    dateFormat  YYYY-MM-DD
+    %% This is a comment
+    dateFormat YYYY-MM-DD
     section Section
-    A task           :a1, 2014-01-01, 30d
-    Another task     :after a1  , 20d
+        A task          :a1, 2014-01-01, 30d
+        Another task    :after a1, 20d
     section Another
-    Task in sec      :2014-01-12  , 12d
-    another task      : 24d
-
+        Task in Another :2014-01-12, 12d
+        another task    :24d
 ```
 
 ## Styling
@@ -350,7 +349,7 @@ Beginner's tip—a full example using interactive links in an html context:
       dateFormat  YYYY-MM-DD
 
       section Clickable
-      Visit mermaidjs           :active, cl1, 2014-01-07, 3d
+      Visit mermaidjs         :active, cl1, 2014-01-07, 3d
       Print arguments         :cl2, after cl1, 3d
       Print task              :cl3, after cl2, 3d
 

packages/mermaid/src/docs/syntax/sankey.md

@@ -0,0 +1,292 @@
+# Sankey diagrams
+
+> A sankey diagram is a visualization used to depict a flow from one set of values to another.
+
+::: warning
+This is an experimental diagram. Its syntax are very close to plain CSV, but it is to be extended in the nearest future.
+:::
+
+The things being connected are called nodes and the connections are called links.
+
+## Example
+
+This example taken from [observable](https://observablehq.com/@d3/sankey/2?collection=@d3/d3-sankey). It may be rendered a little bit differently, though, in terms of size and colors.
+
+```mermaid
+sankey-beta
+
+Agricultural 'waste',Bio-conversion,124.729
+Bio-conversion,Liquid,0.597
+Bio-conversion,Losses,26.862
+Bio-conversion,Solid,280.322
+Bio-conversion,Gas,81.144
+Biofuel imports,Liquid,35
+Biomass imports,Solid,35
+Coal imports,Coal,11.606
+Coal reserves,Coal,63.965
+Coal,Solid,75.571
+District heating,Industry,10.639
+District heating,Heating and cooling - commercial,22.505
+District heating,Heating and cooling - homes,46.184
+Electricity grid,Over generation / exports,104.453
+Electricity grid,Heating and cooling - homes,113.726
+Electricity grid,H2 conversion,27.14
+Electricity grid,Industry,342.165
+Electricity grid,Road transport,37.797
+Electricity grid,Agriculture,4.412
+Electricity grid,Heating and cooling - commercial,40.858
+Electricity grid,Losses,56.691
+Electricity grid,Rail transport,7.863
+Electricity grid,Lighting & appliances - commercial,90.008
+Electricity grid,Lighting & appliances - homes,93.494
+Gas imports,Ngas,40.719
+Gas reserves,Ngas,82.233
+Gas,Heating and cooling - commercial,0.129
+Gas,Losses,1.401
+Gas,Thermal generation,151.891
+Gas,Agriculture,2.096
+Gas,Industry,48.58
+Geothermal,Electricity grid,7.013
+H2 conversion,H2,20.897
+H2 conversion,Losses,6.242
+H2,Road transport,20.897
+Hydro,Electricity grid,6.995
+Liquid,Industry,121.066
+Liquid,International shipping,128.69
+Liquid,Road transport,135.835
+Liquid,Domestic aviation,14.458
+Liquid,International aviation,206.267
+Liquid,Agriculture,3.64
+Liquid,National navigation,33.218
+Liquid,Rail transport,4.413
+Marine algae,Bio-conversion,4.375
+Ngas,Gas,122.952
+Nuclear,Thermal generation,839.978
+Oil imports,Oil,504.287
+Oil reserves,Oil,107.703
+Oil,Liquid,611.99
+Other waste,Solid,56.587
+Other waste,Bio-conversion,77.81
+Pumped heat,Heating and cooling - homes,193.026
+Pumped heat,Heating and cooling - commercial,70.672
+Solar PV,Electricity grid,59.901
+Solar Thermal,Heating and cooling - homes,19.263
+Solar,Solar Thermal,19.263
+Solar,Solar PV,59.901
+Solid,Agriculture,0.882
+Solid,Thermal generation,400.12
+Solid,Industry,46.477
+Thermal generation,Electricity grid,525.531
+Thermal generation,Losses,787.129
+Thermal generation,District heating,79.329
+Tidal,Electricity grid,9.452
+UK land based bioenergy,Bio-conversion,182.01
+Wave,Electricity grid,19.013
+Wind,Electricity grid,289.366
+```
+
+::: details
+
+```mermaid-example
+sankey-beta
+
+Agricultural 'waste',Bio-conversion,124.729
+Bio-conversion,Liquid,0.597
+Bio-conversion,Losses,26.862
+Bio-conversion,Solid,280.322
+Bio-conversion,Gas,81.144
+Biofuel imports,Liquid,35
+Biomass imports,Solid,35
+Coal imports,Coal,11.606
+Coal reserves,Coal,63.965
+Coal,Solid,75.571
+District heating,Industry,10.639
+District heating,Heating and cooling - commercial,22.505
+District heating,Heating and cooling - homes,46.184
+Electricity grid,Over generation / exports,104.453
+Electricity grid,Heating and cooling - homes,113.726
+Electricity grid,H2 conversion,27.14
+Electricity grid,Industry,342.165
+Electricity grid,Road transport,37.797
+Electricity grid,Agriculture,4.412
+Electricity grid,Heating and cooling - commercial,40.858
+Electricity grid,Losses,56.691
+Electricity grid,Rail transport,7.863
+Electricity grid,Lighting & appliances - commercial,90.008
+Electricity grid,Lighting & appliances - homes,93.494
+Gas imports,Ngas,40.719
+Gas reserves,Ngas,82.233
+Gas,Heating and cooling - commercial,0.129
+Gas,Losses,1.401
+Gas,Thermal generation,151.891
+Gas,Agriculture,2.096
+Gas,Industry,48.58
+Geothermal,Electricity grid,7.013
+H2 conversion,H2,20.897
+H2 conversion,Losses,6.242
+H2,Road transport,20.897
+Hydro,Electricity grid,6.995
+Liquid,Industry,121.066
+Liquid,International shipping,128.69
+Liquid,Road transport,135.835
+Liquid,Domestic aviation,14.458
+Liquid,International aviation,206.267
+Liquid,Agriculture,3.64
+Liquid,National navigation,33.218
+Liquid,Rail transport,4.413
+Marine algae,Bio-conversion,4.375
+Ngas,Gas,122.952
+Nuclear,Thermal generation,839.978
+Oil imports,Oil,504.287
+Oil reserves,Oil,107.703
+Oil,Liquid,611.99
+Other waste,Solid,56.587
+Other waste,Bio-conversion,77.81
+Pumped heat,Heating and cooling - homes,193.026
+Pumped heat,Heating and cooling - commercial,70.672
+Solar PV,Electricity grid,59.901
+Solar Thermal,Heating and cooling - homes,19.263
+Solar,Solar Thermal,19.263
+Solar,Solar PV,59.901
+Solid,Agriculture,0.882
+Solid,Thermal generation,400.12
+Solid,Industry,46.477
+Thermal generation,Electricity grid,525.531
+Thermal generation,Losses,787.129
+Thermal generation,District heating,79.329
+Tidal,Electricity grid,9.452
+UK land based bioenergy,Bio-conversion,182.01
+Wave,Electricity grid,19.013
+Wind,Electricity grid,289.366
+```
+
+:::
+
+## Syntax
+
+The idea behind syntax is that a user types `sankey-beta` keyword first, then pastes raw CSV below and get the result.
+
+It implements CSV standard as [described here](https://www.ietf.org/rfc/rfc4180.txt) with subtle **differences**:
+
+- CSV must contain **3 columns only**
+- It is **allowed** to have **empty lines** without comma separators for visual purposes
+
+### Basic
+
+It is implied that 3 columns inside CSV should represent `source`, `target` and `value` accordingly:
+
+```mermaid-example
+sankey-beta
+
+%% source,target,value
+Electricity grid,Over generation / exports,104.453
+Electricity grid,Heating and cooling - homes,113.726
+Electricity grid,H2 conversion,27.14
+```
+
+```mermaid
+sankey-beta
+
+%% source,target,value
+Electricity grid,Over generation / exports,104.453
+Electricity grid,Heating and cooling - homes,113.726
+Electricity grid,H2 conversion,27.14
+```
+
+### Empty Lines
+
+CSV does not support empty lines without comma delimeters by default. But you can add them if needed:
+
+```mermaid-example
+sankey-beta
+
+Bio-conversion,Losses,26.862
+
+Bio-conversion,Solid,280.322
+
+Bio-conversion,Gas,81.144
+```
+
+```mermaid
+sankey-beta
+
+Bio-conversion,Losses,26.862
+
+Bio-conversion,Solid,280.322
+
+Bio-conversion,Gas,81.144
+```
+
+### Commas
+
+If you need to have a comma, wrap it in double quotes:
+
+```mermaid-example
+sankey-beta
+
+Pumped heat,"Heating and cooling, homes",193.026
+Pumped heat,"Heating and cooling, commercial",70.672
+```
+
+```mermaid
+sankey-beta
+
+Pumped heat,"Heating and cooling, homes",193.026
+Pumped heat,"Heating and cooling, commercial",70.672
+```
+
+### Double Quotes
+
+If you need to have double quote, put a pair of them inside quoted string:
+
+```mermaid-example
+sankey-beta
+
+Pumped heat,"Heating and cooling, ""homes""",193.026
+Pumped heat,"Heating and cooling, ""commercial""",70.672
+```
+
+```mermaid
+sankey-beta
+
+Pumped heat,"Heating and cooling, ""homes""",193.026
+Pumped heat,"Heating and cooling, ""commercial""",70.672
+```
+
+## Configuration
+
+You can customize link colors, node alignments and diagram dimensions.
+
+```html
+<script>
+  const config = {
+    startOnLoad: true,
+    securityLevel: 'loose',
+    sankey: {
+      width: 800,
+      height: 400,
+      linkColor: 'source',
+      nodeAlignment: 'left',
+    },
+  };
+  mermaid.initialize(config);
+</script>
+```
+
+### Links Coloring
+
+You can adjust links' color by setting `linkColor` to one of those:
+
+- `source` - link will be of a source node color
+- `target` - link will be of a target node color
+- `gradient` - link color will be smoothly transient between source and target node colors
+- hex code of color, like `#a1a1a1`
+
+### Node Alignment
+
+Graph layout can be changed by setting `nodeAlignment` to:
+
+- `justify`
+- `center`
+- `left`
+- `right`

packages/mermaid/src/docs/syntax/stateDiagram.md

@@ -304,7 +304,7 @@ where
 - the second _property_ is `color` and its _value_ is `white`
 - the third _property_ is `font-weight` and its _value_ is `bold`
 - the fourth _property_ is `stroke-width` and its _value_ is `2px`
-- the fifth _property_ is `stroke` and its _value_ is `yello`
+- the fifth _property_ is `stroke` and its _value_ is `yellow`
 
 ### Apply classDef styles to states
 

packages/mermaid/src/rendering-util/uid.ts

@@ -0,0 +1,18 @@
+export class Uid {
+  private static count = 0;
+  id: string;
+  href: string;
+
+  public static next(name: string): Uid {
+    return new Uid(name + ++Uid.count);
+  }
+
+  constructor(id: string) {
+    this.id = id;
+    this.href = `#${id}`;
+  }
+
+  toString(): string {
+    return 'url(' + this.href + ')';
+  }
+}

pnpm-lock.yaml

@@ -62,7 +62,7 @@ importers:
       '@typescript-eslint/parser':
         specifier: ^5.59.0
         version: 5.59.0(eslint@8.39.0)(typescript@5.1.3)
-      '@vitest/coverage-istanbul':
+      '@vitest/coverage-v8':
         specifier: ^0.32.2
         version: 0.32.2(vitest@0.32.2)
       '@vitest/spy':
@@ -194,6 +194,12 @@ importers:
       '@braintree/sanitize-url':
         specifier: ^6.0.2
         version: 6.0.2
+      '@types/d3-scale':
+        specifier: ^4.0.3
+        version: 4.0.3
+      '@types/d3-scale-chromatic':
+        specifier: ^3.0.0
+        version: 3.0.0
       cytoscape:
         specifier: ^3.23.0
         version: 3.23.0
@@ -206,6 +212,9 @@ importers:
       d3:
         specifier: ^7.4.0
         version: 7.8.2
+      d3-sankey:
+        specifier: ^0.12.3
+        version: 0.12.3
       dagre-d3-es:
         specifier: 7.0.10
         version: 7.0.10
@@ -213,8 +222,8 @@ importers:
         specifier: ^1.11.7
         version: 1.11.7
       dompurify:
-        specifier: 3.0.3
-        version: 3.0.3
+        specifier: 3.0.4
+        version: 3.0.4
       elkjs:
         specifier: ^0.8.2
         version: 0.8.2
@@ -249,6 +258,9 @@ importers:
       '@types/d3':
         specifier: ^7.4.0
         version: 7.4.0
+      '@types/d3-sankey':
+        specifier: ^0.12.1
+        version: 0.12.1
       '@types/d3-selection':
         specifier: ^3.0.5
         version: 3.0.5
@@ -3482,7 +3494,7 @@ packages:
       slash: 3.0.0
       string-length: 4.0.2
       strip-ansi: 6.0.1
-      v8-to-istanbul: 9.0.1
+      v8-to-istanbul: 9.1.0
     transitivePeerDependencies:
       - supports-color
     dev: true
@@ -3984,6 +3996,10 @@ packages:
       '@types/d3-color': 3.1.0
     dev: true
 
+  /@types/d3-path@1.0.9:
+    resolution: {integrity: sha512-NaIeSIBiFgSC6IGUBjZWcscUJEq7vpVu7KthHN8eieTV9d9MqkSOZLH4chq1PmcKy06PNe3axLeKmRIyxJ+PZQ==}
+    dev: true
+
   /@types/d3-path@3.0.0:
     resolution: {integrity: sha512-0g/A+mZXgFkQxN3HniRDbXMN79K3CdTpLsevj+PXiTcb2hVyvkZUBg37StmgCQkaD84cUJ4uaDAWq7UJOQy2Tg==}
     dev: true
@@ -4000,20 +4016,30 @@ packages:
     resolution: {integrity: sha512-IIE6YTekGczpLYo/HehAy3JGF1ty7+usI97LqraNa8IiDur+L44d0VOjAvFQWJVdZOJHukUJw+ZdZBlgeUsHOQ==}
     dev: true
 
-  /@types/d3-scale-chromatic@3.0.0:
-    resolution: {integrity: sha512-dsoJGEIShosKVRBZB0Vo3C8nqSDqVGujJU6tPznsBJxNJNwMF8utmS83nvCBKQYPpjCzaaHcrf66iTRpZosLPw==}
+  /@types/d3-sankey@0.12.1:
+    resolution: {integrity: sha512-10X6l6lXB42udBNX9/fDN+kJuooifSMk7+x4U9815eobavldqis4wDdFQUQjMazh+qlzsUZsGzXKxfWFUVt+3w==}
+    dependencies:
+      '@types/d3-shape': 1.3.8
     dev: true
 
-  /@types/d3-scale@4.0.2:
-    resolution: {integrity: sha512-Yk4htunhPAwN0XGlIwArRomOjdoBFXC3+kCxK2Ubg7I9shQlVSJy/pG/Ht5ASN+gdMIalpk8TJ5xV74jFsetLA==}
+  /@types/d3-scale-chromatic@3.0.0:
+    resolution: {integrity: sha512-dsoJGEIShosKVRBZB0Vo3C8nqSDqVGujJU6tPznsBJxNJNwMF8utmS83nvCBKQYPpjCzaaHcrf66iTRpZosLPw==}
+
+  /@types/d3-scale@4.0.3:
+    resolution: {integrity: sha512-PATBiMCpvHJSMtZAMEhc2WyL+hnzarKzI6wAHYjhsonjWJYGq5BXTzQjv4l8m2jO183/4wZ90rKvSeT7o72xNQ==}
     dependencies:
       '@types/d3-time': 3.0.0
-    dev: true
 
   /@types/d3-selection@3.0.5:
     resolution: {integrity: sha512-xCB0z3Hi8eFIqyja3vW8iV01+OHGYR2di/+e+AiOcXIOrY82lcvWW8Ke1DYE/EUVMsBl4Db9RppSBS3X1U6J0w==}
     dev: true
 
+  /@types/d3-shape@1.3.8:
+    resolution: {integrity: sha512-gqfnMz6Fd5H6GOLYixOZP/xlrMtJms9BaS+6oWxTKHNqPGZ93BkWWupQSCYm6YHqx6h9wjRupuJb90bun6ZaYg==}
+    dependencies:
+      '@types/d3-path': 1.0.9
+    dev: true
+
   /@types/d3-shape@3.1.0:
     resolution: {integrity: sha512-jYIYxFFA9vrJ8Hd4Se83YI6XF+gzDL1aC5DCsldai4XYYiVNdhtpGbA/GM6iyQ8ayhSp3a148LY34hy7A4TxZA==}
     dependencies:
@@ -4026,7 +4052,6 @@ packages:
 
   /@types/d3-time@3.0.0:
     resolution: {integrity: sha512-sZLCdHvBUcNby1cB6Fd3ZBrABbjz3v1Vm90nysCQ6Vt7vd6e/h9Lt7SiJUoEX0l4Dzc7P5llKyhqSi1ycSf1Hg==}
-    dev: true
 
   /@types/d3-timer@3.0.0:
     resolution: {integrity: sha512-HNB/9GHqu7Fo8AQiugyJbv6ZxYz58wef0esl4Mv828w1ZKpAshw/uFWVDUcIB9KKFeFKoxS3cHY07FFgtTRZ1g==}
@@ -4069,7 +4094,7 @@ packages:
       '@types/d3-polygon': 3.0.0
       '@types/d3-quadtree': 3.0.2
       '@types/d3-random': 3.0.1
-      '@types/d3-scale': 4.0.2
+      '@types/d3-scale': 4.0.3
       '@types/d3-scale-chromatic': 3.0.0
       '@types/d3-selection': 3.0.5
       '@types/d3-shape': 3.1.0
@@ -4879,17 +4904,22 @@ packages:
       vue: 3.3.4
     dev: true
 
-  /@vitest/coverage-istanbul@0.32.2(vitest@0.32.2):
-    resolution: {integrity: sha512-B5VSvfzwTsDt9HjFmQ4sZ2tQHivmHJpAoG/BJwNNQeBtSCSdY1L6tfCjwZLo7ryOmZEDA3ck/DAmHCUZqa+MWA==}
+  /@vitest/coverage-v8@0.32.2(vitest@0.32.2):
+    resolution: {integrity: sha512-/+V3nB3fyeuuSeKxCfi6XmWjDIxpky7AWSkGVfaMjAk7di8igBwRsThLjultwIZdTDH1RAxpjmCXEfSqsMFZOA==}
     peerDependencies:
       vitest: '>=0.32.0 <1'
     dependencies:
+      '@ampproject/remapping': 2.2.1
+      '@bcoe/v8-coverage': 0.2.3
       istanbul-lib-coverage: 3.2.0
-      istanbul-lib-instrument: 5.2.1
       istanbul-lib-report: 3.0.0
       istanbul-lib-source-maps: 4.0.1
       istanbul-reports: 3.1.5
+      magic-string: 0.30.0
+      picocolors: 1.0.0
+      std-env: 3.3.2
       test-exclude: 6.0.0
+      v8-to-istanbul: 9.1.0
       vitest: 0.32.2(@vitest/ui@0.32.2)(jsdom@22.0.0)
     transitivePeerDependencies:
       - supports-color
@@ -7139,6 +7169,12 @@ packages:
       lodash: 4.17.21
     dev: false
 
+  /d3-array@2.12.1:
+    resolution: {integrity: sha512-B0ErZK/66mHtEsR1TkPEEkwdy+WDesimkM5gpZr5Dsg54BiTA5RXtYW5qTLIAcekaS9xfZrzBLF/OAkB3Qn1YQ==}
+    dependencies:
+      internmap: 1.0.1
+    dev: false
+
   /d3-array@3.2.0:
     resolution: {integrity: sha512-3yXFQo0oG3QCxbF06rMPFyGRMGJNS7NvsV1+2joOjbBE+9xvWQ8+GcMJAjRCzw06zQ3/arXeJgbPYcjUCuC+3g==}
     engines: {node: '>=12'}
@@ -7256,6 +7292,10 @@ packages:
       d3-color: 3.1.0
     dev: false
 
+  /d3-path@1.0.9:
+    resolution: {integrity: sha512-VLaYcn81dtHVTjEHd8B+pbe9yHWpXKZUC87PzoFmsFrJqgFwDe/qxfp5MlfsfM1V5E/iVt0MmEbWQ7FVIXh/bg==}
+    dev: false
+
   /d3-path@3.0.1:
     resolution: {integrity: sha512-gq6gZom9AFZby0YLduxT1qmrp4xpBA1YZr19OI717WIdKE2OM5ETq5qrHLb301IgxhLwcuxvGZVLeeWc/k1I6w==}
     engines: {node: '>=12'}
@@ -7276,6 +7316,13 @@ packages:
     engines: {node: '>=12'}
     dev: false
 
+  /d3-sankey@0.12.3:
+    resolution: {integrity: sha512-nQhsBRmM19Ax5xEIPLMY9ZmJ/cDvd1BG3UVvt5h3WRxKg5zGRbvnteTyWAbzeSvlh3tW7ZEmq4VwR5mB3tutmQ==}
+    dependencies:
+      d3-array: 2.12.1
+      d3-shape: 1.3.7
+    dev: false
+
   /d3-scale-chromatic@3.0.0:
     resolution: {integrity: sha512-Lx9thtxAKrO2Pq6OO2Ua474opeziKr279P/TKZsMAhYyNDD3EnCffdbgeSYN5O7m2ByQsxtuP2CSDczNUIZ22g==}
     engines: {node: '>=12'}
@@ -7300,6 +7347,12 @@ packages:
     engines: {node: '>=12'}
     dev: false
 
+  /d3-shape@1.3.7:
+    resolution: {integrity: sha512-EUkvKjqPFUAZyOlhY5gzCxCeI0Aep04LwIRpsZ/mLFelJiUfnK56jo5JMDSE7yyP2kLSb6LtF+S5chMk7uqPqw==}
+    dependencies:
+      d3-path: 1.0.9
+    dev: false
+
   /d3-shape@3.1.0:
     resolution: {integrity: sha512-tGDh1Muf8kWjEDT/LswZJ8WF85yDZLvVJpYU9Nq+8+yW1Z5enxrmXOhTArlkaElU+CTn0OTVNli+/i+HP45QEQ==}
     engines: {node: '>=12'}
@@ -7704,8 +7757,8 @@ packages:
       domelementtype: 2.3.0
     dev: true
 
-  /dompurify@3.0.3:
-    resolution: {integrity: sha512-axQ9zieHLnAnHh0sfAamKYiqXMJAVwu+LM/alQ7WDagoWessyWvMSFyW65CqF3owufNu8HBcE4cM2Vflu7YWcQ==}
+  /dompurify@3.0.4:
+    resolution: {integrity: sha512-ae0mA+Qiqp6C29pqZX3fQgK+F91+F7wobM/v8DRzDqJdZJELXiFUx4PP4pK/mzUS0xkiSEx3Ncd9gr69jg3YsQ==}
     dev: false
 
   /domutils@3.0.1:
@@ -9535,6 +9588,10 @@ packages:
       side-channel: 1.0.4
     dev: true
 
+  /internmap@1.0.1:
+    resolution: {integrity: sha512-lDB5YccMydFBtasVtxnZ3MRBHuaoE8GKsppq+EchKL2U4nK/DmEpPHNH8MZe5HkMtpSiTSOZwfN0tzYjO/lJEw==}
+    dev: false
+
   /internmap@2.0.3:
     resolution: {integrity: sha512-5Hh7Y1wQbvY5ooGgPbDaL5iYLAPzMTUrjMulskHLH6wnv/A+1q5rgEaiuqEjB+oxGXIVZs1FF+R/KPN3ZSQYYg==}
     engines: {node: '>=12'}
@@ -14700,8 +14757,8 @@ packages:
   /v8-compile-cache-lib@3.0.1:
     resolution: {integrity: sha512-wa7YjyUGfNZngI/vtK0UHAN+lgDCxBPCylVXGp0zu59Fz5aiGtNXaq3DhIov063MorB+VfufLh3JlF2KdTK3xg==}
 
-  /v8-to-istanbul@9.0.1:
-    resolution: {integrity: sha512-74Y4LqY74kLE6IFyIjPtkSTWzUZmj8tdHT9Ii/26dvQ6K9Dl2NbEfj0XgU2sHCtKgt5VupqhlO/5aWuqS+IY1w==}
+  /v8-to-istanbul@9.1.0:
+    resolution: {integrity: sha512-6z3GW9x8G1gd+JIIgQQQxXuiJtCXeAjp6RaPEPLv62mH3iPHPxV6W3robxtCzNErRo6ZwTmzWhsbNvjyEBKzKA==}
     engines: {node: '>=10.12.0'}
     dependencies:
       '@jridgewell/trace-mapping': 0.3.17

run

@@ -1,40 +1,93 @@
 #!/bin/bash
 RUN="docker-compose run --rm"
+
+ansi()          { echo -e "\e[${1}m${*:2}\e[0m"; }
+bold()          { ansi 1 "$@"; }
+# italic()        { ansi 3 "$@"; }
+underline()     { ansi 4 "$@"; }
+# strikethrough() { ansi 9 "$@"; }
+# red()           { ansi 31 "$@"; }
+
+name=$(basename $0)
 command=$1
 args=${@:2}
 
 case $command in
 
 sh)
-$RUN mermaid sh $args
+$RUN mermaid sh -c "npx $args" 
 ;;
 
-install)
-$RUN mermaid sh -c "npx pnpm install"
+pnpm)
+$RUN mermaid sh -c "npx pnpm $args"
 ;;
 
-test)
-$RUN mermaid sh -c "npx pnpm test"
+dev)
+$RUN --service-ports mermaid sh -c "npx pnpm run dev"
 ;;
 
-lint)
-$RUN mermaid sh -c "npx pnpm -w run lint:fix"
+docs:dev)
+$RUN --service-ports mermaid sh -c "cd packages/mermaid/src/docs && npx pnpm prefetch && npx vitepress --port 3333 --host"
+;;
+
+cypress)
+$RUN cypress $args
 ;;
 
 help)
+
+# Alignment of help message must be as it is, it will be nice looking when printed
+usage=$(
 cat <<EOF
-Run commonly used commands within docker containers
 
-$0 install         # Equvalent of pnpm install 
-$0 lint            # Equvalent of pnpm -w run lint:fix
-$0 sh              # Open sh inside docker container for development
+$(bold MERMAID LOCAL DOCKER DEVELOPMENT)
+
+Welcome! Thank you for joining the development.
+This is a script for running commands within docker containers at ease.
+__________________________________________________________________________________________
+
+Development quick start guide:
+
+$(bold ./$name pnpm install)                 # Install packages
+$(bold ./$name dev)                          # Run dev server with examples, open http://localhost:9000
+$(bold ./$name pnpm vitest)                  # Run watcher for unit tests
+$(bold ./$name cypress)                      # Run integration tests (after starting dev server)
+$(bold ./$name pnpm build)                   # Prepare it for production
+$(bold ./$name docs:dev)                     # Then add documentation, open http://localhost:3333
+__________________________________________________________________________________________
+
+Commands:
+
+$(bold ./$name pnpm)                         # Run any 'pnpm' command
+$(bold ./$name dev)                          # Run dev server with examples, open http://localhost:9000
+$(bold ./$name docs:dev)                     # For docs contributions, open http://localhost:3333
+$(bold ./$name cypress)                      # Run integration tests
+$(bold ./$name sh)                           # Open 'sh' inside docker container for development
+$(bold ./$name help)                         # Show this help
+__________________________________________________________________________________________
+
+Examples of frequiently used commands:
+
+$(bold ./$name pnpm add --filter mermaid) $(underline package)
+        Add package to mermaid
+
+$(bold git diff --name-only develop \| xargs ./$name pnpm prettier --write)
+        Prettify everything you added so far
+
+$(bold ./$name cypress open --project .)
+        Open cypress interactive GUI
+
+$(bold ./$name cypress run --spec cypress/integration/rendering/)$(underline test.spec.ts)
+        Run specific test in cypress\n
 
-$0 help            # Show this help
 EOF
+)
+
+echo -n -e "$usage"
 ;;
 
 *)
-$0 help
+$name help
 ;;
 
-esac
+esac

vite.config.ts

@@ -17,7 +17,7 @@ export default defineConfig({
     // TODO: should we move this to a mermaid-core package?
     setupFiles: ['packages/mermaid/src/tests/setup.ts'],
     coverage: {
-      provider: 'istanbul',
+      provider: 'v8',
       reporter: ['text', 'json', 'html', 'lcov'],
       reportsDirectory: './coverage/vitest',
       exclude: ['**/node_modules/**', '**/tests/**', '**/__mocks__/**'],