Merge branch 'develop' into fix/pie-chart-viewbox

.eslintrc.cjs

@@ -38,6 +38,10 @@ module.exports = {
     'lodash',
     'unicorn',
   ],
+  ignorePatterns: [
+    // this file is automatically generated by `pnpm run --filter mermaid types:build-config`
+    'packages/mermaid/src/config.type.ts',
+  ],
   rules: {
     curly: 'error',
     'no-console': 'error',
@@ -123,6 +127,14 @@ module.exports = {
       files: ['*.{ts,tsx}'],
       plugins: ['tsdoc'],
       rules: {
+        'no-restricted-syntax': [
+          'error',
+          {
+            selector: 'TSEnumDeclaration',
+            message:
+              'Prefer using TypeScript union types over TypeScript enum, since TypeScript enums have a bunch of issues, see https://dev.to/dvddpl/whats-the-problem-with-typescript-enums-2okj',
+          },
+        ],
         'tsdoc/syntax': 'error',
       },
     },

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -55,6 +55,15 @@ body:
       value: |-
         - Mermaid version:
         - Browser and Version: [Chrome, Edge, Firefox]
+  - type: textarea
+    attributes:
+      label: Suggested Solutions
+      description: >
+        If applicable, suggest solutions that could resolve the bug.
+        It would help maintainers/contributors to not waste time looking for the solution. Even pointing the line causing the bug would be great!
+      placeholder: |-
+        - Variable `parser` in file <filepath> is not initialised ...
+        - Add a new type for ...
   - type: textarea
     attributes:
       label: Additional Context

.github/codecov.yaml

@@ -1,6 +1,17 @@
+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:
+      off
+      # Turing off for now as code coverage isn't stable and causes unnecessary build failures.
+      # default:
+      #   threshold: 2%

.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
@@ -44,13 +47,15 @@ jobs:
           VITEST_COVERAGE: true
       - name: Upload Coverage to Codecov
         uses: codecov/codecov-action@v3
-        if: steps.cypress.conclusion == 'success'
+        # Run step only pushes to develop and pull_requests
+        if: ${{ steps.cypress.conclusion == 'success' && (github.event_name == 'pull_request' || github.ref == 'refs/heads/develop')}}
         with:
           files: coverage/cypress/lcov.info
           flags: e2e
           name: mermaid-codecov
-          fail_ci_if_error: true
+          fail_ci_if_error: false
           verbose: true
+          token: 6845cc80-77ee-4e17-85a1-026cd95e0766
       - name: Upload Artifacts
         uses: actions/upload-artifact@v3
         if: ${{ failure() && steps.cypress.conclusion == 'failure' }}

.github/workflows/lint.yml

@@ -1,7 +1,8 @@
 name: Lint
 
 on:
-  push: {}
+  push:
+  merge_group:
   pull_request:
     types:
       - opened
@@ -52,6 +53,19 @@ jobs:
               exit 1
           fi
 
+      - name: Verify `./src/config.type.ts` is in sync with `./src/schemas/config.schema.yaml`
+        shell: bash
+        run: |
+          if ! pnpm run --filter mermaid types:verify-config; then
+            ERROR_MESSAGE='Running `pnpm run --filter mermaid types:verify-config` failed.'
+            ERROR_MESSAGE+=' This should be fixed by running'
+            ERROR_MESSAGE+=' `pnpm run --filter mermaid types:build-config`'
+            ERROR_MESSAGE+=' on your local machine.'
+            echo "::error title=Lint failure::${ERROR_MESSAGE}"
+              # make sure to return an error exitcode so that GitHub actions shows a red-cross
+              exit 1
+          fi
+
       - name: Verify Docs
         id: verifyDocs
         working-directory: ./packages/mermaid

.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:
@@ -43,15 +43,12 @@ jobs:
 
       - name: Upload Coverage to Codecov
         uses: codecov/codecov-action@v3
+        # Run step only pushes to develop and pull_requests
+        if: ${{ github.event_name == 'pull_request' || github.ref == 'refs/heads/develop' }}
         with:
           files: ./coverage/vitest/lcov.info
           flags: unit
           name: mermaid-codecov
-          fail_ci_if_error: true
+          fail_ci_if_error: false
           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
+          token: 6845cc80-77ee-4e17-85a1-026cd95e0766

.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

@@ -5,4 +5,8 @@ coverage
 # Autogenerated by PNPM
 pnpm-lock.yaml
 stats
-packages/mermaid/src/docs/.vitepress/components.d.ts
+**/.vitepress/components.d.ts
+**/.vitepress/cache
+.nyc_output
+# Autogenerated by `pnpm run --filter mermaid types:build-config`
+packages/mermaid/src/config.type.ts

.vite/build.ts

@@ -2,6 +2,7 @@ import { build, InlineConfig, type PluginOption } from 'vite';
 import { resolve } from 'path';
 import { fileURLToPath } from 'url';
 import jisonPlugin from './jisonPlugin.js';
+import jsonSchemaPlugin from './jsonSchemaPlugin.js';
 import { readFileSync } from 'fs';
 import typescript from '@rollup/plugin-typescript';
 import { visualizer } from 'rollup-plugin-visualizer';
@@ -121,6 +122,7 @@ export const getBuildConfig = ({ minify, core, watch, entryName }: BuildOptions)
     },
     plugins: [
       jisonPlugin(),
+      jsonSchemaPlugin(), // handles `.schema.yaml` files
       // @ts-expect-error According to the type definitions, rollup plugins are incompatible with vite
       typescript({ compilerOptions: { declaration: false } }),
       istanbul({

.vite/jsonSchemaPlugin.ts

@@ -0,0 +1,150 @@
+import { load, JSON_SCHEMA } from 'js-yaml';
+import assert from 'node:assert';
+import Ajv2019, { type JSONSchemaType } from 'ajv/dist/2019.js';
+import { PluginOption } from 'vite';
+
+import type { MermaidConfig, BaseDiagramConfig } from '../packages/mermaid/src/config.type.js';
+
+/**
+ * All of the keys in the mermaid config that have a mermaid diagram config.
+ */
+const MERMAID_CONFIG_DIAGRAM_KEYS = [
+  'flowchart',
+  'sequence',
+  'gantt',
+  'journey',
+  'class',
+  'state',
+  'er',
+  'pie',
+  'quadrantChart',
+  'requirement',
+  'mindmap',
+  'timeline',
+  'gitGraph',
+  'c4',
+  'sankey',
+] as const;
+
+/**
+ * Generate default values from the JSON Schema.
+ *
+ * AJV does not support nested default values yet (or default values with $ref),
+ * so we need to manually find them (this may be fixed in ajv v9).
+ *
+ * @param mermaidConfigSchema - The Mermaid JSON Schema to use.
+ * @returns The default mermaid config object.
+ */
+function generateDefaults(mermaidConfigSchema: JSONSchemaType<MermaidConfig>) {
+  const ajv = new Ajv2019({
+    useDefaults: true,
+    allowUnionTypes: true,
+    strict: true,
+  });
+
+  ajv.addKeyword({
+    keyword: 'meta:enum', // used by jsonschema2md
+    errors: false,
+  });
+  ajv.addKeyword({
+    keyword: 'tsType', // used by json-schema-to-typescript
+    errors: false,
+  });
+
+  // ajv currently doesn't support nested default values, see https://github.com/ajv-validator/ajv/issues/1718
+  // (may be fixed in v9) so we need to manually use sub-schemas
+  const mermaidDefaultConfig = {};
+
+  assert.ok(mermaidConfigSchema.$defs);
+  const baseDiagramConfig = mermaidConfigSchema.$defs.BaseDiagramConfig;
+
+  for (const key of MERMAID_CONFIG_DIAGRAM_KEYS) {
+    const subSchemaRef = mermaidConfigSchema.properties[key].$ref;
+    const [root, defs, defName] = subSchemaRef.split('/');
+    assert.strictEqual(root, '#');
+    assert.strictEqual(defs, '$defs');
+    const subSchema = {
+      $schema: mermaidConfigSchema.$schema,
+      $defs: mermaidConfigSchema.$defs,
+      ...mermaidConfigSchema.$defs[defName],
+    } as JSONSchemaType<BaseDiagramConfig>;
+
+    const validate = ajv.compile(subSchema);
+
+    mermaidDefaultConfig[key] = {};
+
+    for (const required of subSchema.required ?? []) {
+      if (subSchema.properties[required] === undefined && baseDiagramConfig.properties[required]) {
+        mermaidDefaultConfig[key][required] = baseDiagramConfig.properties[required].default;
+      }
+    }
+    if (!validate(mermaidDefaultConfig[key])) {
+      throw new Error(
+        `schema for subconfig ${key} does not have valid defaults! Errors were ${JSON.stringify(
+          validate.errors,
+          undefined,
+          2
+        )}`
+      );
+    }
+  }
+
+  const validate = ajv.compile(mermaidConfigSchema);
+
+  if (!validate(mermaidDefaultConfig)) {
+    throw new Error(
+      `Mermaid config JSON Schema does not have valid defaults! Errors were ${JSON.stringify(
+        validate.errors,
+        undefined,
+        2
+      )}`
+    );
+  }
+
+  return mermaidDefaultConfig;
+}
+
+/**
+ * Vite plugin that handles JSON Schemas saved as a `.schema.yaml` file.
+ *
+ * Use `my-example.schema.yaml?only-defaults=true` to only load the default values.
+ */
+export default function jsonSchemaPlugin(): PluginOption {
+  return {
+    name: 'json-schema-plugin',
+    transform(src: string, id: string) {
+      const idAsUrl = new URL(id, 'file:///');
+
+      if (!idAsUrl.pathname.endsWith('schema.yaml')) {
+        return;
+      }
+
+      if (idAsUrl.searchParams.get('only-defaults')) {
+        const jsonSchema = load(src, {
+          filename: idAsUrl.pathname,
+          // only allow JSON types in our YAML doc (will probably be default in YAML 1.3)
+          // e.g. `true` will be parsed a boolean `true`, `True` will be parsed as string `"True"`.
+          schema: JSON_SCHEMA,
+        }) as JSONSchemaType<MermaidConfig>;
+        return {
+          code: `export default ${JSON.stringify(generateDefaults(jsonSchema), undefined, 2)};`,
+          map: null, // no source map
+        };
+      } else {
+        return {
+          code: `export default ${JSON.stringify(
+            load(src, {
+              filename: idAsUrl.pathname,
+              // only allow JSON types in our YAML doc (will probably be default in YAML 1.3)
+              // e.g. `true` will be parsed a boolean `true`, `True` will be parsed as string `"True"`.
+              schema: JSON_SCHEMA,
+            }),
+            undefined,
+            2
+          )};`,
+          map: null, // provide source map if available
+        };
+      }
+    },
+  };
+}

CITATION.cff

@@ -0,0 +1,16 @@
+cff-version: 1.2.0
+title: 'Mermaid: Generate diagrams from markdown-like text'
+message: >-
+  If you use this software, please cite it using the metadata from this file.
+type: software
+authors:
+  - family-names: Sveidqvist
+    given-names: Knut
+  - name: 'Contributors to Mermaid'
+repository-code: 'https://github.com/mermaid-js/mermaid'
+date-released: 2014-12-02
+url: 'https://mermaid.js.org/'
+abstract: >-
+  JavaScript based diagramming and charting tool that renders Markdown-inspired
+  text definitions to create and modify diagrams dynamically.
+license: MIT

__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

@@ -40,6 +40,7 @@
     "dompurify",
     "edgechromium",
     "elkjs",
+    "elle",
     "faber",
     "flatmap",
     "foswiki",
@@ -86,7 +87,10 @@
     "mkdocs",
     "mmorel",
     "mult",
+    "neurodiverse",
     "nextra",
+    "nikolay",
+    "nirname",
     "orlandoni",
     "pathe",
     "pbrolin",
@@ -100,10 +104,13 @@
     "ranksep",
     "rect",
     "rects",
+    "reda",
     "redmine",
     "rehype",
     "roledescription",
+    "rozhkov",
     "sandboxed",
+    "sankey",
     "setupgraphviewbox",
     "shiki",
     "sidharth",
@@ -118,6 +125,7 @@
     "stylis",
     "subhash-halder",
     "substate",
+    "sulais",
     "sveidqvist",
     "swimm",
     "techn",
@@ -141,6 +149,7 @@
     "vueuse",
     "xlink",
     "yash",
+    "yokozuna",
     "zenuml"
   ],
   "patterns": [

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');
+      });
+    });
+  });
+});

cypress/integration/rendering/sequencediagram.spec.js

@@ -156,6 +156,81 @@ context('Sequence diagram', () => {
       `
     );
   });
+  it('should render a sequence diagram with basic actor creation and destruction', () => {
+    imgSnapshotTest(
+      `
+      sequenceDiagram
+      Alice ->> Bob: Hello Bob, how are you ?
+      Bob ->> Alice: Fine, thank you. And you?
+      create participant Polo
+      Alice ->> Polo: Hi Polo!
+      create actor Ola1 as Ola
+      Polo ->> Ola1: Hiii
+      Ola1 ->> Alice: Hi too
+      destroy Ola1
+      Alice --x Ola1: Bye!
+      Alice ->> Bob: And now?
+      create participant Ola2 as Ola
+      Alice ->> Ola2: Hello again
+      destroy Alice
+      Alice --x Ola2: Bye for me!
+      destroy Bob
+      Ola2 --> Bob: The end
+      `
+    );
+  });
+  it('should render a sequence diagram with actor creation and destruction coupled with backgrounds, loops and notes', () => {
+    imgSnapshotTest(
+      `
+      sequenceDiagram
+			accTitle: test the accTitle
+			accDescr: Test a description
+
+			participant Alice
+      participant Bob
+			autonumber 10 10
+			rect rgb(200, 220, 100)
+			rect rgb(200, 255, 200)
+
+			Alice ->> Bob: Hello Bob, how are you?
+      create participant John as John<br />Second Line
+			Bob-->>John: How about you John?
+			end
+
+			Bob--x Alice: I am good thanks!
+			Bob-x John: I am good thanks!
+			Note right of John: John thinks a long<br />long time, so long<br />that the text does<br />not fit on a row.
+
+			Bob-->Alice: Checking with John...
+			Note over John:wrap: John looks like he's still thinking, so Bob prods him a bit.
+			Bob-x John: Hey John - we're still waiting to know<br />how you're doing
+			Note over John:nowrap: John's trying hard not to break his train of thought.
+      destroy John
+			Bob-x John: John! Cmon!
+			Note over John: After a few more moments, John<br />finally snaps out of it.
+			end
+
+			autonumber off
+			alt either this
+      create actor Lola
+			Alice->>+Lola: Yes
+			Lola-->>-Alice: OK
+			else or this
+			autonumber
+			Alice->>Lola: No
+			else or this will happen
+			Alice->Lola: Maybe
+			end
+			autonumber 200
+			par this happens in parallel
+      destroy Bob
+			Alice -->> Bob: Parallel message 1
+			and
+			Alice -->> Lola: Parallel message 2
+			end
+      `
+    );
+  });
   context('font settings', () => {
     it('should render different note fonts when configured', () => {
       imgSnapshotTest(

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

@@ -5,5 +5,32 @@ services:
     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/Tutorials.md

@@ -26,6 +26,10 @@ The definitions that can be generated the Live-Editor are also backwards-compati
 
 [Eddie Jaoude: Can you code your diagrams?](https://www.youtube.com/watch?v=9HZzKkAqrX8)
 
+## Mermaid with OpenAI
+
+[Elle Neal: Mind Mapping with AI: An Accessible Approach for Neurodiverse Learners Tutorial:](https://medium.com/@elle.neal_71064/mind-mapping-with-ai-an-accessible-approach-for-neurodiverse-learners-1a74767359ff), [Demo:](https://databutton.com/v/jk9vrghc)
+
 ## Mermaid with HTML
 
 Examples are provided in [Getting Started](../intro/n00b-gettingStarted.md)

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:266](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/defaultConfig.ts#L266)
 
 ---
 
@@ -22,35 +22,12 @@
 
 • `Const` **default**: `Partial`<`MermaidConfig`>
 
-**Configuration methods in Mermaid version 8.6.0 have been updated, to learn more\[[click
-here](8.6.0_docs.md)].**
+Default mermaid configuration options.
 
-## **What follows are config instructions for older versions**
-
-These are the default options which can be overridden with the initialization call like so:
-
-**Example 1:**
-
-```js
-mermaid.initialize({ flowchart: { htmlLabels: false } });
-```
-
-**Example 2:**
-
-```html
-<script>
-  const config = {
-    startOnLoad: true,
-    flowchart: { useMaxWidth: true, htmlLabels: true, curve: 'cardinal' },
-    securityLevel: 'loose',
-  };
-  mermaid.initialize(config);
-</script>
-```
-
-A summary of all options and their defaults is found [here](#mermaidapi-configuration-defaults).
-A description of each option follows below.
+Please see the Mermaid config JSON Schema for the default JSON values.
+Non-JSON JS default values are listed in this file, e.g. functions, or
+`undefined` (explicitly set so that `configKeys` finds them).
 
 #### Defined in
 
-[defaultConfig.ts:33](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/defaultConfig.ts#L33)
+[defaultConfig.ts:16](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/defaultConfig.ts#L16)

docs/config/setup/modules/mermaidAPI.md

@@ -96,7 +96,7 @@ mermaid.initialize(config);
 
 #### Defined in
 
-[mermaidAPI.ts:663](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/mermaidAPI.ts#L663)
+[mermaidAPI.ts:667](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/mermaidAPI.ts#L667)
 
 ## Functions
 

docs/config/theming.md

@@ -74,8 +74,8 @@ 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)) |
+| -------------- | ------------------------------------ | ------ | ----------------------------------------------------------------------------------- |
+| 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/)
+## [Mermaid Chart’s ChatGPT Plugin Combines Generative AI and Smart Diagramming For Users](https://www.mermaidchart.com/blog/posts/mermaid-chart-chatgpt-plugin-combines-generative-ai-and-smart-diagramming)
 
-8 June 2023 · 7 mins
+29 June 2023 · 4 mins
 
-A quadrant chart is a useful diagram that helps users visualize data and identify patterns in a data set.
+Mermaid Chart’s new ChatGPT plugin integrates AI-powered text prompts with Mermaid’s intuitive diagramming editor, enabling users to generate, edit, and share complex diagrams with ease and efficiency.

docs/news/blog.md

@@ -6,6 +6,18 @@
 
 # Blog
 
+## [Mermaid Chart’s ChatGPT Plugin Combines Generative AI and Smart Diagramming For Users](https://www.mermaidchart.com/blog/posts/mermaid-chart-chatgpt-plugin-combines-generative-ai-and-smart-diagramming)
+
+29 June 2023 · 4 mins
+
+Mermaid Chart’s new ChatGPT plugin integrates AI-powered text prompts with Mermaid’s intuitive diagramming editor, enabling users to generate, edit, and share complex diagrams with ease and efficiency.
+
+## [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/flowchart.md

@@ -991,6 +991,24 @@ flowchart LR
     classDef someclass fill:#f96
 ```
 
+This form can be used when declaring multiple links between nodes:
+
+```mermaid-example
+flowchart LR
+    A:::foo & B:::bar --> C:::foobar
+    classDef foo stroke:#f00
+    classDef bar stroke:#0f0
+    classDef foobar stroke:#00f
+```
+
+```mermaid
+flowchart LR
+    A:::foo & B:::bar --> C:::foobar
+    classDef foo stroke:#f00
+    classDef bar stroke:#0f0
+    classDef foobar stroke:#00f
+```
+
 ### Css classes
 
 It is also possible to predefine classes in css styles that can be applied from the graph definition as in the example

docs/syntax/gantt.md

@@ -30,7 +30,7 @@ gantt
         A task          :a1, 2014-01-01, 30d
         Another task    :after a1, 20d
     section Another
-    Task in sec      :2014-01-12  , 12d
+        Task in Another :2014-01-12, 12d
         another task    :24d
 ```
 
@@ -42,7 +42,7 @@ gantt
         A task          :a1, 2014-01-01, 30d
         Another task    :after a1, 20d
     section Another
-    Task in sec      :2014-01-12  , 12d
+        Task in Another :2014-01-12, 12d
         another task    :24d
 ```
 
@@ -148,20 +148,20 @@ You can add milestones to the diagrams. Milestones differ from tasks as they rep
 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
+    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
+    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
+    %% This is a comment
     dateFormat YYYY-MM-DD
     section Section
         A task          :a1, 2014-01-01, 30d
         Another task    :after a1, 20d
     section Another
-    Task in sec      :2014-01-12  , 12d
+        Task in Another :2014-01-12, 12d
         another task    :24d
-
 ```
 
 ```mermaid
 gantt
     title A Gantt Diagram
-    %% this is a comment
+    %% This is a comment
     dateFormat YYYY-MM-DD
     section Section
         A task          :a1, 2014-01-01, 30d
         Another task    :after a1, 20d
     section Another
-    Task in sec      :2014-01-12  , 12d
+        Task in Another :2014-01-12, 12d
         another task    :24d
-
 ```
 
 ## Styling

docs/syntax/sankey.md

@@ -0,0 +1,294 @@
+> **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
+```
+
+## 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`

docs/syntax/sequenceDiagram.md

@@ -94,6 +94,43 @@ sequenceDiagram
     J->>A: Great!
 ```
 
+### Actor Creation and Destruction
+
+It is possible to create and destroy actors by messages. To do so, add a create or destroy directive before the message.
+
+    create participant B
+    A --> B: Hello
+
+Create directives support actor/participant distinction and aliases. The sender or the recipient of a message can be destroyed but only the recipient can be created.
+
+```mermaid-example
+sequenceDiagram
+    Alice->>Bob: Hello Bob, how are you ?
+    Bob->>Alice: Fine, thank you. And you?
+    create participant Carl
+    Alice->>Carl: Hi Carl!
+    create actor D as Donald
+    Carl->>D: Hi!
+    destroy Carl
+    Alice-xCarl: We are too many
+    destroy Bob
+    Bob->>Alice: I agree
+```
+
+```mermaid
+sequenceDiagram
+    Alice->>Bob: Hello Bob, how are you ?
+    Bob->>Alice: Fine, thank you. And you?
+    create participant Carl
+    Alice->>Carl: Hi Carl!
+    create actor D as Donald
+    Carl->>D: Hi!
+    destroy Carl
+    Alice-xCarl: We are too many
+    destroy Bob
+    Bob->>Alice: I agree
+```
+
 ### Grouping / Box
 
 The actor(s) can be grouped in vertical boxes. You can define a color (if not, it will be transparent) and/or a descriptive label using the following notation:

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
 

docs/syntax/timeline.md

@@ -257,9 +257,11 @@ let us look at same example, where we have disabled the multiColor option.
 
 ### Customizing Color scheme
 
-You can customize the color scheme using the `cScale0` to `cScale11` theme variables. Mermaid allows you to set unique colors for up-to 12 sections, where `cScale0` variable will drive the value of the first section or time-period, `cScale1` will drive the value of the second section and so on.
+You can customize the color scheme using the `cScale0` to `cScale11` theme variables, which will change the background colors. Mermaid allows you to set unique colors for up-to 12 sections, where `cScale0` variable will drive the value of the first section or time-period, `cScale1` will drive the value of the second section and so on.
 In case you have more than 12 sections, the color scheme will start to repeat.
 
+If you also want to change the foreground color of a section, you can do so use theme variables corresponding `cScaleLabel0` to `cScaleLabel11` variables.
+
 NOTE: Default values for these theme variables are picked from the selected theme. If you want to override the default values, you can use the `initialize` call to add your custom theme variable values.
 
 Example:
@@ -268,9 +270,9 @@ Now let's override the default values for the `cScale0` to `cScale2` variables:
 
 ```mermaid-example
     %%{init: { 'logLevel': 'debug', 'theme': 'default' , 'themeVariables': {
-              'cScale0': '#ff0000',
+              'cScale0': '#ff0000', 'cScaleLabel0': '#ffffff',
               'cScale1': '#00ff00',
-              'cScale2': '#0000ff'
+              'cScale2': '#0000ff', 'cScaleLabel2': '#ffffff'
        } } }%%
        timeline
         title History of Social Media Platform
@@ -286,9 +288,9 @@ Now let's override the default values for the `cScale0` to `cScale2` variables:
 
 ```mermaid
     %%{init: { 'logLevel': 'debug', 'theme': 'default' , 'themeVariables': {
-              'cScale0': '#ff0000',
+              'cScale0': '#ff0000', 'cScaleLabel0': '#ffffff',
               'cScale1': '#00ff00',
-              'cScale2': '#0000ff'
+              'cScale2': '#0000ff', 'cScaleLabel2': '#ffffff'
        } } }%%
        timeline
         title History of Social Media Platform

package.json

@@ -1,10 +1,10 @@
 {
   "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@8.6.4",
+  "packageManager": "pnpm@8.6.5",
   "keywords": [
     "diagram",
     "markdown",
@@ -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",
@@ -77,9 +78,10 @@
     "@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",
+    "ajv": "^8.12.0",
     "concurrently": "^8.0.1",
     "cors": "^2.8.5",
     "coveralls": "^3.1.1",
@@ -91,20 +93,20 @@
     "eslint-plugin-cypress": "^2.13.2",
     "eslint-plugin-html": "^7.1.0",
     "eslint-plugin-jest": "^27.2.1",
-    "eslint-plugin-jsdoc": "^43.0.7",
+    "eslint-plugin-jsdoc": "^46.0.0",
     "eslint-plugin-json": "^3.1.0",
     "eslint-plugin-lodash": "^7.4.0",
     "eslint-plugin-markdown": "^3.0.0",
     "eslint-plugin-no-only-tests": "^3.1.0",
     "eslint-plugin-tsdoc": "^0.2.17",
-    "eslint-plugin-unicorn": "^46.0.0",
+    "eslint-plugin-unicorn": "^47.0.0",
     "express": "^4.18.2",
     "globby": "^13.1.4",
     "husky": "^8.0.3",
     "jest": "^29.5.0",
     "jison": "^0.4.18",
     "js-yaml": "^4.1.0",
-    "jsdom": "^21.1.1",
+    "jsdom": "^22.0.0",
     "lint-staged": "^13.2.1",
     "nyc": "^15.1.0",
     "path-browserify": "^1.0.1",

packages/mermaid-example-diagram/src/exampleDiagramDb.js

@@ -22,7 +22,6 @@ export const setInfo = (inf) => {
   info = inf;
 };
 
-/** @returns Returns the info flag */
 export const getInfo = () => {
   return info;
 };

packages/mermaid-example-diagram/src/exampleDiagramRenderer.js

@@ -8,7 +8,6 @@ import { log, getConfig, setupGraphViewbox } from './mermaidUtils.js';
  * @param {any} text
  * @param {any} id
  * @param {any} version
- * @param diagObj
  */
 export const draw = (text, id, version) => {
   try {

packages/mermaid-example-diagram/src/mermaidUtils.ts

@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
 const warning = (s: string) => {
   // Todo remove debug code
   // eslint-disable-next-line no-console
@@ -28,7 +29,6 @@ export let setLogLevel: (level: keyof typeof LEVELS | number | string) => void;
 export let getConfig: () => object;
 export let sanitizeText: (str: string) => string;
 export let commonDb: () => object;
-// eslint-disable @typescript-eslint/no-explicit-any
 export let setupGraphViewbox: (
   graph: any,
   svgElem: any,

packages/mermaid/.lintstagedrc.mjs

@@ -4,4 +4,5 @@ export default {
   'src/docs/**': ['pnpm --filter mermaid run docs:build --git'],
   'src/docs.mts': ['pnpm --filter mermaid run docs:build --git'],
   'src/(defaultConfig|config|mermaidAPI).ts': ['pnpm --filter mermaid run docs:build --git'],
+  'src/schemas/config.schema.yaml': ['pnpm --filter mermaid run types:build-config --git'],
 };

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",
@@ -27,11 +27,14 @@
     "docs:code": "typedoc src/defaultConfig.ts src/config.ts src/mermaidAPI.ts && prettier --write ./src/docs/config/setup",
     "docs:build": "rimraf ../../docs && pnpm docs:spellcheck && pnpm docs:code && ts-node-esm src/docs.mts",
     "docs:verify": "pnpm docs:spellcheck && pnpm docs:code && ts-node-esm src/docs.mts --verify",
-    "docs:pre:vitepress": "rimraf src/vitepress && pnpm docs:code && ts-node-esm src/docs.mts --vitepress",
-    "docs:build:vitepress": "pnpm docs:pre:vitepress && (cd src/vitepress && pnpm --filter ./ install --no-frozen-lockfile --ignore-scripts && pnpm run build) && cpy --flat src/docs/landing/ ./src/vitepress/.vitepress/dist/landing",
+    "docs:pre:vitepress": "pnpm --filter ./src/docs prefetch && rimraf src/vitepress && pnpm docs:code && ts-node-esm src/docs.mts --vitepress && pnpm --filter ./src/vitepress install --no-frozen-lockfile --ignore-scripts",
+    "docs:build:vitepress": "pnpm docs:pre:vitepress && (cd src/vitepress && pnpm run build) && cpy --flat src/docs/landing/ ./src/vitepress/.vitepress/dist/landing",
     "docs:dev": "pnpm docs:pre:vitepress && concurrently \"pnpm --filter ./src/vitepress dev\" \"ts-node-esm src/docs.mts --watch --vitepress\"",
+    "docs:dev:docker": "pnpm docs:pre:vitepress && concurrently \"pnpm --filter ./src/vitepress dev:docker\" \"ts-node-esm src/docs.mts --watch --vitepress\"",
     "docs:serve": "pnpm docs:build:vitepress && vitepress serve src/vitepress",
     "docs:spellcheck": "cspell --config ../../cSpell.json \"src/docs/**/*.md\"",
+    "types:build-config": "ts-node-esm --transpileOnly scripts/create-types-from-json-schema.mts",
+    "types:verify-config": "ts-node-esm scripts/create-types-from-json-schema.mts --verify",
     "release": "pnpm build",
     "prepublishOnly": "cpy '../../README.*' ./ --cwd=. && pnpm -w run build"
   },
@@ -53,13 +56,16 @@
   },
   "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",
@@ -71,8 +77,10 @@
     "web-worker": "^1.2.0"
   },
   "devDependencies": {
+    "@adobe/jsonschema2md": "^7.1.4",
     "@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",
@@ -83,6 +91,7 @@
     "@types/uuid": "^9.0.1",
     "@typescript-eslint/eslint-plugin": "^5.59.0",
     "@typescript-eslint/parser": "^5.59.0",
+    "ajv": "^8.11.2",
     "chokidar": "^3.5.3",
     "concurrently": "^8.0.1",
     "coveralls": "^3.1.1",
@@ -92,7 +101,8 @@
     "globby": "^13.1.4",
     "jison": "^0.4.18",
     "js-base64": "^3.7.5",
-    "jsdom": "^21.1.1",
+    "jsdom": "^22.0.0",
+    "json-schema-to-typescript": "^11.0.3",
     "micromatch": "^4.0.5",
     "path-browserify": "^1.0.1",
     "prettier": "^2.8.8",
@@ -105,6 +115,7 @@
     "typedoc-plugin-markdown": "^3.15.2",
     "typescript": "^5.0.4",
     "unist-util-flatmap": "^1.0.0",
+    "unist-util-visit": "^4.1.2",
     "vitepress": "^1.0.0-alpha.72",
     "vitepress-plugin-search": "^1.0.4-alpha.20"
   },

packages/mermaid/scripts/create-types-from-json-schema.mts

@@ -0,0 +1,252 @@
+/**
+ * Script to load Mermaid Config JSON Schema from YAML and to:
+ *
+ * - Validate JSON Schema
+ *
+ * Then to generate:
+ *
+ * - config.types.ts TypeScript file
+ */
+
+/* eslint-disable no-console */
+
+import { readFile, writeFile } from 'node:fs/promises';
+import { join } from 'node:path';
+import assert from 'node:assert';
+import { execFile } from 'node:child_process';
+import { promisify } from 'node:util';
+
+import { load, JSON_SCHEMA } from 'js-yaml';
+import { compile, type JSONSchema } from 'json-schema-to-typescript';
+
+import _Ajv2019, { type JSONSchemaType } from 'ajv/dist/2019.js';
+
+// Workaround for wrong AJV types, see
+// https://github.com/ajv-validator/ajv/issues/2132#issuecomment-1290409907
+const Ajv2019 = _Ajv2019 as unknown as typeof _Ajv2019.default;
+
+// !!! -- The config.type.js file is created by this script -- !!!
+import type { MermaidConfig } from '../src/config.type.js';
+
+// options for running the main command
+const verifyOnly = process.argv.includes('--verify');
+/** If `true`, automatically `git add` any changes (i.e. during `pnpm run pre-commit`)*/
+const git = process.argv.includes('--git');
+
+/**
+ * All of the keys in the mermaid config that have a mermaid diagram config.
+ */
+const MERMAID_CONFIG_DIAGRAM_KEYS = [
+  'flowchart',
+  'sequence',
+  'gantt',
+  'journey',
+  'class',
+  'state',
+  'er',
+  'pie',
+  'quadrantChart',
+  'requirement',
+  'mindmap',
+  'timeline',
+  'gitGraph',
+  'c4',
+  'sankey',
+];
+
+/**
+ * Loads the MermaidConfig JSON schema YAML file.
+ *
+ * @returns The loaded JSON Schema, use {@link validateSchema} to confirm it is a valid JSON Schema.
+ */
+async function loadJsonSchemaFromYaml() {
+  const configSchemaFile = join('src', 'schemas', 'config.schema.yaml');
+  const contentsYaml = await readFile(configSchemaFile, { encoding: 'utf8' });
+  const jsonSchema = load(contentsYaml, {
+    filename: configSchemaFile,
+    // only allow JSON types in our YAML doc (will probably be default in YAML 1.3)
+    // e.g. `true` will be parsed a boolean `true`, `True` will be parsed as string `"True"`.
+    schema: JSON_SCHEMA,
+  });
+  return jsonSchema;
+}
+
+/**
+ * Asserts that the given value is a valid JSON Schema object.
+ *
+ * @param jsonSchema - The value to validate as JSON Schema 2019-09
+ * @throws {Error} if the given object is invalid.
+ */
+function validateSchema(jsonSchema: unknown): asserts jsonSchema is JSONSchemaType<MermaidConfig> {
+  if (typeof jsonSchema !== 'object') {
+    throw new Error(`jsonSchema param is not an object: actual type is ${typeof jsonSchema}`);
+  }
+  if (jsonSchema === null) {
+    throw new Error('jsonSchema param must not be null');
+  }
+  const ajv = new Ajv2019({
+    allErrors: true,
+    allowUnionTypes: true,
+    strict: true,
+  });
+
+  ajv.addKeyword({
+    keyword: 'meta:enum', // used by jsonschema2md (in docs.mts script)
+    errors: false,
+  });
+  ajv.addKeyword({
+    keyword: 'tsType', // used by json-schema-to-typescript
+    errors: false,
+  });
+
+  ajv.compile(jsonSchema);
+}
+
+/**
+ * Generate a typescript definition from a JSON Schema using json-schema-to-typescript.
+ *
+ * @param mermaidConfigSchema - The input JSON Schema.
+ */
+async function generateTypescript(mermaidConfigSchema: JSONSchemaType<MermaidConfig>) {
+  /**
+   * Replace all usages of `allOf` with `extends`.
+   *
+   * `extends` is only valid JSON Schema in very old versions of JSON Schema.
+   * However, json-schema-to-typescript creates much nicer types when using
+   * `extends`, so we should use them instead when possible.
+   *
+   * @param schema - The input schema.
+   * @returns The schema with `allOf` replaced with `extends`.
+   */
+  function replaceAllOfWithExtends(schema: JSONSchemaType<Record<string, any>>) {
+    if (schema['allOf']) {
+      const { allOf, ...schemaWithoutAllOf } = schema;
+      return {
+        ...schemaWithoutAllOf,
+        extends: allOf,
+      };
+    }
+    return schema;
+  }
+
+  /**
+   * For backwards compatibility with older Mermaid Typescript defs,
+   * we need to make all value optional instead of required.
+   *
+   * This is because the `MermaidConfig` type is used as an input, and everything is optional,
+   * since all the required values have default values.s
+   *
+   * In the future, we should make make the input to Mermaid `Partial<MermaidConfig>`.
+   *
+   * @todo TODO: Remove this function when Mermaid releases a new breaking change.
+   * @param schema - The input schema.
+   * @returns The schema with all required values removed.
+   */
+  function removeRequired(schema: JSONSchemaType<Record<string, any>>) {
+    return { ...schema, required: [] };
+  }
+
+  /**
+   * This is a temporary hack to control the order the types are generated in.
+   *
+   * By default, json-schema-to-typescript outputs the $defs in the order they
+   * are used, then any unused schemas at the end.
+   *
+   * **The only purpose of this function is to make the `git diff` simpler**
+   * **We should remove this later to simplify the code**
+   *
+   * @todo TODO: Remove this function in a future PR.
+   * @param schema - The input schema.
+   * @returns The schema with all `$ref`s removed.
+   */
+  function unrefSubschemas(schema: JSONSchemaType<Record<string, any>>) {
+    return {
+      ...schema,
+      properties: Object.fromEntries(
+        Object.entries(schema.properties).map(([key, propertySchema]) => {
+          if (MERMAID_CONFIG_DIAGRAM_KEYS.includes(key)) {
+            const { $ref, ...propertySchemaWithoutRef } = propertySchema as JSONSchemaType<unknown>;
+            if ($ref === undefined) {
+              throw Error(
+                `subSchema ${key} is in MERMAID_CONFIG_DIAGRAM_KEYS but does not have a $ref field`
+              );
+            }
+            const [
+              _root, // eslint-disable-line @typescript-eslint/no-unused-vars
+              _defs, // eslint-disable-line @typescript-eslint/no-unused-vars
+              defName,
+            ] = $ref.split('/');
+            return [
+              key,
+              {
+                ...propertySchemaWithoutRef,
+                tsType: defName,
+              },
+            ];
+          }
+          return [key, propertySchema];
+        })
+      ),
+    };
+  }
+
+  assert.ok(mermaidConfigSchema.$defs);
+  const modifiedSchema = {
+    ...unrefSubschemas(removeRequired(mermaidConfigSchema)),
+
+    $defs: Object.fromEntries(
+      Object.entries(mermaidConfigSchema.$defs).map(([key, subSchema]) => {
+        return [key, removeRequired(replaceAllOfWithExtends(subSchema))];
+      })
+    ),
+  };
+
+  const typescriptFile = await compile(
+    modifiedSchema as JSONSchema, // json-schema-to-typescript only allows JSON Schema 4 as input type
+    'MermaidConfig',
+    {
+      additionalProperties: false, // in JSON Schema 2019-09, these are called `unevaluatedProperties`
+      unreachableDefinitions: true, // definition for FontConfig is unreachable
+    }
+  );
+
+  // TODO, should we somehow use the functions from `docs.mts` instead?
+  if (verifyOnly) {
+    const originalFile = await readFile('./src/config.type.ts', { encoding: 'utf-8' });
+    if (typescriptFile !== originalFile) {
+      console.error('❌ Error: ./src/config.type.ts will be changed.');
+      console.error("Please run 'pnpm run --filter mermaid types:build-config' to update this");
+      process.exitCode = 1;
+    } else {
+      console.log('✅ ./src/config.type.ts will be unchanged');
+    }
+  } else {
+    console.log('Writing typescript file to ./src/config.type.ts');
+    await writeFile('./src/config.type.ts', typescriptFile, { encoding: 'utf8' });
+    if (git) {
+      console.log('📧 Git: Adding ./src/config.type.ts changed');
+      await promisify(execFile)('git', ['add', './src/config.type.ts']);
+    }
+  }
+}
+
+/** Main function */
+async function main() {
+  if (verifyOnly) {
+    console.log(
+      'Verifying that ./src/config.type.ts is in sync with src/schemas/config.schema.yaml'
+    );
+  }
+
+  const configJsonSchema = await loadJsonSchemaFromYaml();
+
+  validateSchema(configJsonSchema);
+
+  // Generate types from JSON Schema
+  await generateTypescript(configJsonSchema);
+}
+
+main().catch((error) => {
+  console.error(error);
+  process.exitCode = 1;
+});

packages/mermaid/src/accessibility.spec.ts

@@ -1,27 +1,24 @@
 import { MockedD3 } from './tests/MockedD3.js';
 import { setA11yDiagramInfo, addSVGa11yTitleDescription } from './accessibility.js';
-import { D3Element } from './mermaidAPI.js';
+import type { D3Element } from './mermaidAPI.js';
 
 describe('accessibility', () => {
-  const fauxSvgNode = new MockedD3();
+  const fauxSvgNode: MockedD3 = new MockedD3();
 
   describe('setA11yDiagramInfo', () => {
-    it('sets the svg element role to "graphics-document document"', () => {
-      // @ts-ignore  Required to easily handle the d3 select types
+    it('should set svg element role to "graphics-document document"', () => {
       const svgAttrSpy = vi.spyOn(fauxSvgNode, 'attr').mockReturnValue(fauxSvgNode);
       setA11yDiagramInfo(fauxSvgNode, 'flowchart');
       expect(svgAttrSpy).toHaveBeenCalledWith('role', 'graphics-document document');
     });
 
-    it('sets the aria-roledescription to the diagram type', () => {
-      // @ts-ignore  Required to easily handle the d3 select types
+    it('should set aria-roledescription to the diagram type', () => {
       const svgAttrSpy = vi.spyOn(fauxSvgNode, 'attr').mockReturnValue(fauxSvgNode);
       setA11yDiagramInfo(fauxSvgNode, 'flowchart');
       expect(svgAttrSpy).toHaveBeenCalledWith('aria-roledescription', 'flowchart');
     });
 
-    it('does not set the aria-roledescription if the diagram type is empty', () => {
-      // @ts-ignore  Required to easily handle the d3 select types
+    it('should not set aria-roledescription if the diagram type is empty', () => {
       const svgAttrSpy = vi.spyOn(fauxSvgNode, 'attr').mockReturnValue(fauxSvgNode);
       setA11yDiagramInfo(fauxSvgNode, '');
       expect(svgAttrSpy).toHaveBeenCalledTimes(1);
@@ -32,8 +29,8 @@ describe('accessibility', () => {
   describe('addSVGa11yTitleDescription', () => {
     const givenId = 'theBaseId';
 
-    describe('with the given svg d3 object:', () => {
-      it('does nothing if there is no insert defined', () => {
+    describe('with svg d3 object', () => {
+      it('should do nothing if there is no insert defined', () => {
         const noInsertSvg = {
           attr: vi.fn(),
         };
@@ -42,26 +39,25 @@ describe('accessibility', () => {
         expect(noInsertAttrSpy).not.toHaveBeenCalled();
       });
 
-      // ----------------
-      // Convenience functions to DRY up the spec
+      // convenience functions to DRY up the spec
 
-      function expectAriaLabelledByIsTitleId(
+      function expectAriaLabelledByItTitleId(
         svgD3Node: D3Element,
-        title: string | null | undefined,
-        desc: string | null | undefined,
+        title: string | undefined,
+        desc: string | undefined,
         givenId: string
-      ) {
+      ): void {
         const svgAttrSpy = vi.spyOn(svgD3Node, 'attr').mockReturnValue(svgD3Node);
         addSVGa11yTitleDescription(svgD3Node, title, desc, givenId);
         expect(svgAttrSpy).toHaveBeenCalledWith('aria-labelledby', `chart-title-${givenId}`);
       }
 
-      function expectAriaDescribedByIsDescId(
+      function expectAriaDescribedByItDescId(
         svgD3Node: D3Element,
-        title: string | null | undefined,
-        desc: string | null | undefined,
+        title: string | undefined,
+        desc: string | undefined,
         givenId: string
-      ) {
+      ): void {
         const svgAttrSpy = vi.spyOn(svgD3Node, 'attr').mockReturnValue(svgD3Node);
         addSVGa11yTitleDescription(svgD3Node, title, desc, givenId);
         expect(svgAttrSpy).toHaveBeenCalledWith('aria-describedby', `chart-desc-${givenId}`);
@@ -69,154 +65,148 @@ describe('accessibility', () => {
 
       function a11yTitleTagInserted(
         svgD3Node: D3Element,
-        title: string | null | undefined,
-        desc: string | null | undefined,
+        title: string | undefined,
+        desc: string | undefined,
         givenId: string,
         callNumber: number
-      ) {
+      ): void {
         a11yTagInserted(svgD3Node, title, desc, givenId, callNumber, 'title', title);
       }
 
       function a11yDescTagInserted(
         svgD3Node: D3Element,
-        title: string | null | undefined,
-        desc: string | null | undefined,
+        title: string | undefined,
+        desc: string | undefined,
         givenId: string,
         callNumber: number
-      ) {
+      ): void {
         a11yTagInserted(svgD3Node, title, desc, givenId, callNumber, 'desc', desc);
       }
 
       function a11yTagInserted(
-        svgD3Node: D3Element,
-        title: string | null | undefined,
-        desc: string | null | undefined,
+        _svgD3Node: D3Element,
+        title: string | undefined,
+        desc: string | undefined,
         givenId: string,
         callNumber: number,
         expectedPrefix: string,
-        expectedText: string | null | undefined
-      ) {
-        const fauxInsertedD3 = new MockedD3();
-        const svgInsertSpy = vi.spyOn(fauxSvgNode, 'insert').mockReturnValue(fauxInsertedD3);
-        // @ts-ignore  Required to easily handle the d3 select types
+        expectedText: string | undefined
+      ): void {
+        const fauxInsertedD3: MockedD3 = new MockedD3();
+        const svginsertpy = vi.spyOn(fauxSvgNode, 'insert').mockReturnValue(fauxInsertedD3);
         const titleAttrSpy = vi.spyOn(fauxInsertedD3, 'attr').mockReturnValue(fauxInsertedD3);
         const titleTextSpy = vi.spyOn(fauxInsertedD3, 'text');
 
         addSVGa11yTitleDescription(fauxSvgNode, title, desc, givenId);
-        expect(svgInsertSpy).toHaveBeenCalledWith(expectedPrefix, ':first-child');
+        expect(svginsertpy).toHaveBeenCalledWith(expectedPrefix, ':first-child');
         expect(titleAttrSpy).toHaveBeenCalledWith('id', `chart-${expectedPrefix}-${givenId}`);
         expect(titleTextSpy).toHaveBeenNthCalledWith(callNumber, expectedText);
       }
-      // ----------------
 
-      describe('given an a11y title', () => {
+      describe('with a11y title', () => {
         const a11yTitle = 'a11y title';
 
-        describe('given an a11y description', () => {
+        describe('with a11y description', () => {
           const a11yDesc = 'a11y description';
 
-          it('sets aria-labelledby to the title id inserted as a child', () => {
-            expectAriaLabelledByIsTitleId(fauxSvgNode, a11yTitle, a11yDesc, givenId);
+          it('shold set aria-labelledby to the title id inserted as a child', () => {
+            expectAriaLabelledByItTitleId(fauxSvgNode, a11yTitle, a11yDesc, givenId);
           });
 
-          it('sets aria-describedby to the description id inserted as a child', () => {
-            expectAriaDescribedByIsDescId(fauxSvgNode, a11yTitle, a11yDesc, givenId);
+          it('should set aria-describedby to the description id inserted as a child', () => {
+            expectAriaDescribedByItDescId(fauxSvgNode, a11yTitle, a11yDesc, givenId);
           });
 
-          it('inserts a title tag as the first child with the text set to the accTitle given', () => {
+          it('should insert title tag as the first child with the text set to the accTitle given', () => {
             a11yTitleTagInserted(fauxSvgNode, a11yTitle, a11yDesc, givenId, 2);
           });
 
-          it('inserts a desc tag as the 2nd child with the text set to accDescription given', () => {
+          it('should insert desc tag as the 2nd child with the text set to accDescription given', () => {
             a11yDescTagInserted(fauxSvgNode, a11yTitle, a11yDesc, givenId, 1);
           });
         });
 
-        describe(`no a11y description`, () => {
+        describe(`without a11y description`, () => {
           const a11yDesc = undefined;
 
-          it('sets aria-labelledby to the title id inserted as a child', () => {
-            expectAriaLabelledByIsTitleId(fauxSvgNode, a11yTitle, a11yDesc, givenId);
+          it('should set aria-labelledby to the title id inserted as a child', () => {
+            expectAriaLabelledByItTitleId(fauxSvgNode, a11yTitle, a11yDesc, givenId);
           });
 
-          it('no aria-describedby is set', () => {
-            // @ts-ignore Required to easily handle the d3 select types
+          it('should not set aria-describedby', () => {
             const svgAttrSpy = vi.spyOn(fauxSvgNode, 'attr').mockReturnValue(fauxSvgNode);
             addSVGa11yTitleDescription(fauxSvgNode, a11yTitle, a11yDesc, givenId);
             expect(svgAttrSpy).not.toHaveBeenCalledWith('aria-describedby', expect.anything());
           });
 
-          it('inserts a title tag as the first child with the text set to the accTitle given', () => {
+          it('should insert title tag as the first child with the text set to the accTitle given', () => {
             a11yTitleTagInserted(fauxSvgNode, a11yTitle, a11yDesc, givenId, 1);
           });
 
-          it('no description tag is inserted', () => {
-            const fauxTitle = new MockedD3();
-            const svgInsertSpy = vi.spyOn(fauxSvgNode, 'insert').mockReturnValue(fauxTitle);
+          it('should not insert description tag', () => {
+            const fauxTitle: MockedD3 = new MockedD3();
+            const svginsertpy = vi.spyOn(fauxSvgNode, 'insert').mockReturnValue(fauxTitle);
             addSVGa11yTitleDescription(fauxSvgNode, a11yTitle, a11yDesc, givenId);
-            expect(svgInsertSpy).not.toHaveBeenCalledWith('desc', ':first-child');
+            expect(svginsertpy).not.toHaveBeenCalledWith('desc', ':first-child');
           });
         });
       });
 
-      describe('no a11y title', () => {
+      describe('without a11y title', () => {
         const a11yTitle = undefined;
 
-        describe('given an a11y description', () => {
+        describe('with a11y description', () => {
           const a11yDesc = 'a11y description';
 
-          it('no aria-labelledby is set', () => {
-            // @ts-ignore Required to easily handle the d3 select types
+          it('should not set aria-labelledby', () => {
             const svgAttrSpy = vi.spyOn(fauxSvgNode, 'attr').mockReturnValue(fauxSvgNode);
             addSVGa11yTitleDescription(fauxSvgNode, a11yTitle, a11yDesc, givenId);
             expect(svgAttrSpy).not.toHaveBeenCalledWith('aria-labelledby', expect.anything());
           });
 
-          it('no title tag inserted', () => {
-            const fauxTitle = new MockedD3();
-            const svgInsertSpy = vi.spyOn(fauxSvgNode, 'insert').mockReturnValue(fauxTitle);
+          it('should not insert title tag', () => {
+            const fauxTitle: MockedD3 = new MockedD3();
+            const svginsertpy = vi.spyOn(fauxSvgNode, 'insert').mockReturnValue(fauxTitle);
             addSVGa11yTitleDescription(fauxSvgNode, a11yTitle, a11yDesc, givenId);
-            expect(svgInsertSpy).not.toHaveBeenCalledWith('title', ':first-child');
+            expect(svginsertpy).not.toHaveBeenCalledWith('title', ':first-child');
           });
 
-          it('sets aria-describedby to the description id inserted as a child', () => {
-            expectAriaDescribedByIsDescId(fauxSvgNode, a11yTitle, a11yDesc, givenId);
+          it('should set aria-describedby to the description id inserted as a child', () => {
+            expectAriaDescribedByItDescId(fauxSvgNode, a11yTitle, a11yDesc, givenId);
           });
 
-          it('inserts a desc tag as the 2nd child with the text set to accDescription given', () => {
+          it('should insert desc tag as the 2nd child with the text set to accDescription given', () => {
             a11yDescTagInserted(fauxSvgNode, a11yTitle, a11yDesc, givenId, 1);
           });
         });
 
-        describe('no a11y description', () => {
+        describe('without a11y description', () => {
           const a11yDesc = undefined;
 
-          it('no aria-labelledby is set', () => {
-            // @ts-ignore Required to easily handle the d3 select types
+          it('should not set aria-labelledby', () => {
             const svgAttrSpy = vi.spyOn(fauxSvgNode, 'attr').mockReturnValue(fauxSvgNode);
             addSVGa11yTitleDescription(fauxSvgNode, a11yTitle, a11yDesc, givenId);
             expect(svgAttrSpy).not.toHaveBeenCalledWith('aria-labelledby', expect.anything());
           });
 
-          it('no aria-describedby is set', () => {
-            // @ts-ignore Required to easily handle the d3 select types
+          it('should not set aria-describedby', () => {
             const svgAttrSpy = vi.spyOn(fauxSvgNode, 'attr').mockReturnValue(fauxSvgNode);
             addSVGa11yTitleDescription(fauxSvgNode, a11yTitle, a11yDesc, givenId);
             expect(svgAttrSpy).not.toHaveBeenCalledWith('aria-describedby', expect.anything());
           });
 
-          it('no title tag inserted', () => {
-            const fauxTitle = new MockedD3();
-            const svgInsertSpy = vi.spyOn(fauxSvgNode, 'insert').mockReturnValue(fauxTitle);
+          it('should not insert title tag', () => {
+            const fauxTitle: MockedD3 = new MockedD3();
+            const svginsertpy = vi.spyOn(fauxSvgNode, 'insert').mockReturnValue(fauxTitle);
             addSVGa11yTitleDescription(fauxSvgNode, a11yTitle, a11yDesc, givenId);
-            expect(svgInsertSpy).not.toHaveBeenCalledWith('title', ':first-child');
+            expect(svginsertpy).not.toHaveBeenCalledWith('title', ':first-child');
           });
 
-          it('no description tag inserted', () => {
-            const fauxDesc = new MockedD3();
-            const svgInsertSpy = vi.spyOn(fauxSvgNode, 'insert').mockReturnValue(fauxDesc);
+          it('should not insert  description tag', () => {
+            const fauxDesc: MockedD3 = new MockedD3();
+            const svginsertpy = vi.spyOn(fauxSvgNode, 'insert').mockReturnValue(fauxDesc);
             addSVGa11yTitleDescription(fauxSvgNode, a11yTitle, a11yDesc, givenId);
-            expect(svgInsertSpy).not.toHaveBeenCalledWith('desc', ':first-child');
+            expect(svginsertpy).not.toHaveBeenCalledWith('desc', ':first-child');
           });
         });
       });

packages/mermaid/src/accessibility.ts

@@ -1,13 +1,11 @@
 /**
- * Accessibility (a11y) functions, types, helpers
+ * Accessibility (a11y) functions, types, helpers.
+ *
  * @see https://www.w3.org/WAI/
  * @see https://www.w3.org/TR/wai-aria-1.1/
  * @see https://www.w3.org/TR/svg-aam-1.0/
- *
  */
-import { D3Element } from './mermaidAPI.js';
-
-import isEmpty from 'lodash-es/isEmpty.js';
+import type { D3Element } from './mermaidAPI.js';
 
 /**
  * SVG element role:
@@ -21,50 +19,47 @@ import isEmpty from 'lodash-es/isEmpty.js';
 const SVG_ROLE = 'graphics-document document';
 
 /**
- * Add role and aria-roledescription to the svg element
+ * Add role and aria-roledescription to the svg element.
  *
  * @param svg - d3 object that contains the SVG HTML element
  * @param diagramType - diagram name for to the aria-roledescription
  */
-export function setA11yDiagramInfo(svg: D3Element, diagramType: string | null | undefined) {
+export function setA11yDiagramInfo(svg: D3Element, diagramType: string) {
   svg.attr('role', SVG_ROLE);
-  if (!isEmpty(diagramType)) {
+  if (diagramType !== '') {
     svg.attr('aria-roledescription', diagramType);
   }
 }
+
 /**
  * Add an accessible title and/or description element to a chart.
  * The title is usually not displayed and the description is never displayed.
  *
- * The following charts display their title as a visual and accessibility element: gantt
+ * The following charts display their title as a visual and accessibility element: gantt.
  *
  * @param svg - d3 node to insert the a11y title and desc info
- * @param a11yTitle - a11y title. null and undefined are meaningful: means to skip it
- * @param a11yDesc - a11y description.  null and undefined are meaningful: means to skip it
+ * @param a11yTitle - a11y title. undefined or empty strings mean to skip them
+ * @param a11yDesc - a11y description. undefined or empty strings mean to skip them
  * @param baseId - id used to construct the a11y title and description id
  */
 export function addSVGa11yTitleDescription(
   svg: D3Element,
-  a11yTitle: string | null | undefined,
-  a11yDesc: string | null | undefined,
+  a11yTitle: string | undefined,
+  a11yDesc: string | undefined,
   baseId: string
-) {
+): void {
   if (svg.insert === undefined) {
     return;
   }
 
-  if (a11yTitle || a11yDesc) {
   if (a11yDesc) {
-      const descId = 'chart-desc-' + baseId;
+    const descId = `chart-desc-${baseId}`;
     svg.attr('aria-describedby', descId);
     svg.insert('desc', ':first-child').attr('id', descId).text(a11yDesc);
   }
   if (a11yTitle) {
-      const titleId = 'chart-title-' + baseId;
+    const titleId = `chart-title-${baseId}`;
     svg.attr('aria-labelledby', titleId);
     svg.insert('title', ':first-child').attr('id', titleId).text(a11yTitle);
   }
-  } else {
-    return;
-  }
 }

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.spec.js

@@ -1,56 +0,0 @@
-import * as configApi from './config.js';
-
-describe('when working with site config', function () {
-  beforeEach(() => {
-    // Resets the site config to default config
-    configApi.setSiteConfig({});
-  });
-  it('should set site config and config properly', function () {
-    let config_0 = { foo: 'bar', bar: 0 };
-    configApi.setSiteConfig(config_0);
-    let config_1 = configApi.getSiteConfig();
-    let config_2 = configApi.getConfig();
-    expect(config_1.foo).toEqual(config_0.foo);
-    expect(config_1.bar).toEqual(config_0.bar);
-    expect(config_1).toEqual(config_2);
-  });
-  it('should respect secure keys when applying directives', function () {
-    let config_0 = {
-      foo: 'bar',
-      bar: 'cant-be-changed',
-      secure: [...configApi.defaultConfig.secure, 'bar'],
-    };
-    configApi.setSiteConfig(config_0);
-    const directive = { foo: 'baf', bar: 'should-not-be-allowed' };
-    const cfg = configApi.updateCurrentConfig(config_0, [directive]);
-    expect(cfg.foo).toEqual(directive.foo);
-    expect(cfg.bar).toBe(config_0.bar);
-  });
-  it('should set reset config properly', function () {
-    let config_0 = { foo: 'bar', bar: 0 };
-    configApi.setSiteConfig(config_0);
-    let config_1 = { foo: 'baf' };
-    configApi.setConfig(config_1);
-    let config_2 = configApi.getConfig();
-    expect(config_2.foo).toEqual(config_1.foo);
-    configApi.reset();
-    let config_3 = configApi.getConfig();
-    expect(config_3.foo).toEqual(config_0.foo);
-    let config_4 = configApi.getSiteConfig();
-    expect(config_4.foo).toEqual(config_0.foo);
-  });
-  it('should set global reset config properly', function () {
-    let config_0 = { foo: 'bar', bar: 0 };
-    configApi.setSiteConfig(config_0);
-    let config_1 = configApi.getSiteConfig();
-    expect(config_1.foo).toEqual(config_0.foo);
-    let config_2 = configApi.getConfig();
-    expect(config_2.foo).toEqual(config_0.foo);
-    configApi.setConfig({ foobar: 'bar0' });
-    let config_3 = configApi.getConfig();
-    expect(config_3.foobar).toEqual('bar0');
-    configApi.reset();
-    let config_4 = configApi.getConfig();
-    expect(config_4.foobar).toBeUndefined();
-  });
-});

packages/mermaid/src/config.spec.ts

@@ -0,0 +1,72 @@
+import * as configApi from './config.js';
+
+describe('when working with site config', function () {
+  beforeEach(() => {
+    // Resets the site config to default config
+    configApi.setSiteConfig({});
+  });
+  it('should set site config and config properly', function () {
+    const config_0 = { fontFamily: 'foo-font', fontSize: 150 };
+    configApi.setSiteConfig(config_0);
+    const config_1 = configApi.getSiteConfig();
+    const config_2 = configApi.getConfig();
+    expect(config_1.fontFamily).toEqual(config_0.fontFamily);
+    expect(config_1.fontSize).toEqual(config_0.fontSize);
+    expect(config_1).toEqual(config_2);
+  });
+  it('should respect secure keys when applying directives', function () {
+    const config_0 = {
+      fontFamily: 'foo-font',
+      fontSize: 12345, // can't be changed
+      secure: [...configApi.defaultConfig.secure!, 'fontSize'],
+    };
+    configApi.setSiteConfig(config_0);
+    const directive = { fontFamily: 'baf', fontSize: 54321 /* fontSize shouldn't be changed */ };
+    const cfg = configApi.updateCurrentConfig(config_0, [directive]);
+    expect(cfg.fontFamily).toEqual(directive.fontFamily);
+    expect(cfg.fontSize).toBe(config_0.fontSize);
+  });
+  it('should allow setting partial options', function () {
+    const defaultConfig = configApi.getConfig();
+
+    configApi.setConfig({
+      quadrantChart: {
+        chartHeight: 600,
+      },
+    });
+
+    const updatedConfig = configApi.getConfig();
+
+    // deep options we didn't update should remain the same
+    expect(defaultConfig.quadrantChart!.chartWidth).toEqual(
+      updatedConfig.quadrantChart!.chartWidth
+    );
+  });
+  it('should set reset config properly', function () {
+    const config_0 = { fontFamily: 'foo-font', fontSize: 150 };
+    configApi.setSiteConfig(config_0);
+    const config_1 = { fontFamily: 'baf' };
+    configApi.setConfig(config_1);
+    const config_2 = configApi.getConfig();
+    expect(config_2.fontFamily).toEqual(config_1.fontFamily);
+    configApi.reset();
+    const config_3 = configApi.getConfig();
+    expect(config_3.fontFamily).toEqual(config_0.fontFamily);
+    const config_4 = configApi.getSiteConfig();
+    expect(config_4.fontFamily).toEqual(config_0.fontFamily);
+  });
+  it('should set global reset config properly', function () {
+    const config_0 = { fontFamily: 'foo-font', fontSize: 150 };
+    configApi.setSiteConfig(config_0);
+    const config_1 = configApi.getSiteConfig();
+    expect(config_1.fontFamily).toEqual(config_0.fontFamily);
+    const config_2 = configApi.getConfig();
+    expect(config_2.fontFamily).toEqual(config_0.fontFamily);
+    configApi.setConfig({ altFontFamily: 'bar-font' });
+    const config_3 = configApi.getConfig();
+    expect(config_3.altFontFamily).toEqual('bar-font');
+    configApi.reset();
+    const config_4 = configApi.getConfig();
+    expect(config_4.altFontFamily).toBeUndefined();
+  });
+});

packages/mermaid/src/config.ts

@@ -226,9 +226,11 @@ export const reset = (config = siteConfig): void => {
   updateCurrentConfig(config, directives);
 };
 
-enum ConfigWarning {
-  'LAZY_LOAD_DEPRECATED' = 'The configuration options lazyLoadedDiagrams and loadExternalDiagramsAtStartup are deprecated. Please use registerExternalDiagrams instead.',
-}
+const ConfigWarning = {
+  LAZY_LOAD_DEPRECATED:
+    'The configuration options lazyLoadedDiagrams and loadExternalDiagramsAtStartup are deprecated. Please use registerExternalDiagrams instead.',
+} as const;
+
 type ConfigWarningStrings = keyof typeof ConfigWarning;
 const issuedWarnings: { [key in ConfigWarningStrings]?: boolean } = {};
 const issueWarning = (warning: ConfigWarningStrings) => {

packages/mermaid/src/dagre-wrapper/nodes.js

@@ -602,6 +602,8 @@ const doublecircle = async (parent, node) => {
   const outerCircle = circleGroup.insert('circle');
   const innerCircle = circleGroup.insert('circle');
 
+  circleGroup.attr('class', node.class);
+
   // center the circle around its coordinate
   outerCircle
     .attr('style', node.style)

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/diagram-api/diagramAPI.ts

@@ -7,7 +7,6 @@ import { addStylesForDiagram } from '../styles.js';
 import { DiagramDefinition, DiagramDetector } from './types.js';
 import * as _commonDb from '../commonDb.js';
 import { parseDirective as _parseDirective } from '../directiveUtils.js';
-import isEmpty from 'lodash-es/isEmpty.js';
 
 /*
   Packaging and exposing resources for external diagrams so that they can import
@@ -51,9 +50,7 @@ export const registerDiagram = (
   if (detector) {
     addDetector(id, detector);
   }
-  if (!isEmpty(diagram.styles)) {
   addStylesForDiagram(id, diagram.styles);
-  }
 
   if (diagram.injectUtils) {
     diagram.injectUtils(

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

@@ -82,3 +82,5 @@ export type ParseDirectiveDefinition = (statement: string, context: string, type
 export type HTML = d3.Selection<HTMLIFrameElement, unknown, Element, unknown>;
 
 export type SVG = d3.Selection<SVGSVGElement, unknown, Element, unknown>;
+
+export type DiagramStylesProvider = (options?: any) => string;

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

@@ -93,16 +93,15 @@ 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) {
+  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(' ');
-    }
+      const cssClassStr = vertex.cssClasses.join(' ');
 
       const styles = { labelStyle: '', style: '' }; //getStylesFromArray(vertex.styles);
 

packages/mermaid/src/diagrams/class/classRenderer.js

@@ -141,8 +141,6 @@ const insertMarkers = function (elem) {
 export const draw = function (text, id, _version, diagObj) {
   const conf = getConfig().class;
   idCache = {};
-  // diagObj.db.clear();
-  // diagObj.parser.parse(text);
 
   log.info('Rendering diagram ' + text);
 

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/er/erRenderer.js

@@ -568,13 +568,6 @@ export const draw = function (text, id, _version, diagObj) {
       : select('body');
   // const doc = securityLevel === 'sandbox' ? sandboxElement.nodes()[0].contentDocument : document;
 
-  // Parse the text to populate erDb
-  // try {
-  //   parser.parse(text);
-  // } catch (err) {
-  //   log.debug('Parsing failed');
-  // }
-
   // Get a reference to the svg node that contains the text
   const svg = root.select(`[id='${id}']`);
 

packages/mermaid/src/diagrams/flowchart/flowDb.js

@@ -342,7 +342,10 @@ export const setLink = function (ids, linkStr, target) {
   setClass(ids, 'clickable');
 };
 export const getTooltip = function (id) {
+  if (tooltips.hasOwnProperty(id)) {
     return tooltips[id];
+  }
+  return undefined;
 };
 
 /**
@@ -443,7 +446,7 @@ export const clear = function (ver = 'gen-1') {
   subGraphs = [];
   subGraphLookup = {};
   subCount = 0;
-  tooltips = [];
+  tooltips = {};
   firstGraphFlag = true;
   version = ver;
   commonClear();

packages/mermaid/src/diagrams/flowchart/flowRenderer.js

@@ -306,13 +306,6 @@ export const draw = function (text, id, _version, diagObj) {
       : select('body');
   const doc = securityLevel === 'sandbox' ? sandboxElement.nodes()[0].contentDocument : document;
 
-  // Parse the graph definition
-  try {
-    diagObj.parser.parse(text);
-  } catch (err) {
-    log.debug('Parsing failed');
-  }
-
   // Fetch the default direction, use TD if none was found
   let dir = diagObj.db.getDirection();
   if (dir === undefined) {

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

@@ -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/gantt/ganttRenderer.js

@@ -59,8 +59,6 @@ let w;
 export const draw = function (text, id, version, diagObj) {
   const conf = getConfig().gantt;
 
-  // diagObj.db.clear();
-  // parser.parse(text);
   const securityLevel = getConfig().securityLevel;
   // Handle root and Document for when rendering in sandbox mode
   let sandboxElement;

packages/mermaid/src/diagrams/git/gitGraphRenderer-old.js

@@ -1,7 +1,6 @@
 import { curveBasis, line, select } from 'd3';
 
 import db from './gitGraphAst.js';
-import gitGraphParser from './parser/gitGraph.js';
 import { logger } from '../../logger.js';
 import { interpolateToCurve } from '../../utils.js';
 
@@ -328,13 +327,7 @@ function renderLines(svg, commit, direction, branchColor = 0) {
 
 export const draw = function (txt, id, ver) {
   try {
-    const parser = gitGraphParser.parser;
-    parser.yy = db;
-    parser.yy.clear();
-
     logger.debug('in gitgraph renderer', txt + '\n', 'id:', id, ver);
-    // Parse the graph definition
-    parser.parse(txt + '\n');
 
     config = Object.assign(config, apiConfig, db.getOptions());
     logger.debug('effective options', config);

packages/mermaid/src/diagrams/mindmap/mindmapRenderer.js

@@ -167,14 +167,8 @@ function positionNodes(cy) {
 export const draw = async (text, id, version, diagObj) => {
   const conf = getConfig();
 
-  // console.log('Config: ', conf);
   conf.htmlLabels = false;
 
-  // This is done only for throwing the error if the text is not valid.
-  diagObj.db.clear();
-  // Parse the graph definition
-  diagObj.parser.parse(text);
-
   log.debug('Rendering mindmap diagram\n' + text, diagObj.parser);
 
   const securityLevel = getConfig().securityLevel;

packages/mermaid/src/diagrams/pie/pieRenderer.js

@@ -34,9 +34,6 @@ export const draw = (txt, id, _version, diagObj) => {
     const doc = securityLevel === 'sandbox' ? sandboxElement.nodes()[0].contentDocument : document;
 
     // Parse the Pie Chart definition
-    diagObj.db.clear();
-    diagObj.parser.parse(txt);
-    log.debug('Parsed info diagram');
     const elem = doc.getElementById(id);
     width = elem.parentElement.offsetWidth;
 

packages/mermaid/src/diagrams/quadrant-chart/quadrantBuilder.ts

@@ -1,7 +1,7 @@
 // @ts-ignore: TODO Fix ts errors
 import { scaleLinear } from 'd3';
 import { log } from '../../logger.js';
-import { QuadrantChartConfig } from '../../config.type.js';
+import type { BaseDiagramConfig, QuadrantChartConfig } from '../../config.type.js';
 import defaultConfig from '../../defaultConfig.js';
 import { getThemeVariables } from '../../themes/theme-default.js';
 
@@ -71,7 +71,8 @@ export interface quadrantBuilderData {
   points: QuadrantPointInputType[];
 }
 
-export interface QuadrantBuilderConfig extends QuadrantChartConfig {
+export interface QuadrantBuilderConfig
+  extends Required<Omit<QuadrantChartConfig, keyof BaseDiagramConfig>> {
   showXAxis: boolean;
   showYAxis: boolean;
   showTitle: boolean;

packages/mermaid/src/diagrams/requirement/requirementRenderer.js

@@ -306,8 +306,6 @@ const elementString = (str) => {
 
 export const draw = (text, id, _version, diagObj) => {
   conf = getConfig().requirement;
-  diagObj.db.clear();
-  diagObj.parser.parse(text);
 
   const securityLevel = conf.securityLevel;
   // Handle root and Document for when rendering in sandbox mode

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 type { SankeyLinkColor, SankeyNodeAlignment } from '../../config.type.js';
+
+// Map config options to alignment functions
+const alignmentsMap: Record<
+  SankeyNodeAlignment,
+  (node: d3SankeyNode<object, object>, n: number) => number
+> = {
+  left: d3SankeyLeft,
+  right: d3SankeyRight,
+  center: d3SankeyCenter,
+  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 || 'gradient';
+
+  if (linkColor === '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 'gradient':
+      coloring = (d: any) => d.uid;
+      break;
+    case 'source':
+      coloring = (d: any) => colorScheme(d.source.id);
+      break;
+    case '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/sequence/parser/sequenceDiagram.jison

@@ -38,6 +38,8 @@
 "box"															{ this.begin('LINE'); return 'box'; }
 "participant"                                                   { this.begin('ID'); return 'participant'; }
 "actor"                                                   		{ this.begin('ID'); return 'participant_actor'; }
+"create"                                                        return 'create';
+"destroy"                                                       { this.begin('ID'); return 'destroy'; }
 <ID>[^\->:\n,;]+?([\-]*[^\->:\n,;]+?)*?(?=((?!\n)\s)+"as"(?!\n)\s|[#\n;]|$)     { yytext = yytext.trim(); this.begin('ALIAS'); return 'ACTOR'; }
 <ALIAS>"as"                                                     { this.popState(); this.popState(); this.begin('LINE'); return 'AS'; }
 <ALIAS>(?:)                                                     { this.popState(); this.popState(); return 'NEWLINE'; }
@@ -138,6 +140,7 @@ directive
 
 statement
 	: participant_statement
+	| 'create' participant_statement {$2.type='createParticipant'; $$=$2;}
 	| 'box' restOfLine box_section end
 	{
 		$3.unshift({type: 'boxStart', boxData:yy.parseBoxData($2) });
@@ -234,10 +237,11 @@ else_sections
 	;
 
 participant_statement
-	: 'participant' actor 'AS' restOfLine 'NEWLINE' {$2.type='addParticipant';$2.description=yy.parseMessage($4); $$=$2;}
-	| 'participant' actor 'NEWLINE' {$2.type='addParticipant';$$=$2;}
-	| 'participant_actor' actor 'AS' restOfLine 'NEWLINE' {$2.type='addActor';$2.description=yy.parseMessage($4); $$=$2;}
-	| 'participant_actor' actor 'NEWLINE' {$2.type='addActor'; $$=$2;}
+	: 'participant' actor 'AS' restOfLine 'NEWLINE' {$2.draw='participant'; $2.type='addParticipant';$2.description=yy.parseMessage($4); $$=$2;}
+	| 'participant' actor 'NEWLINE' {$2.draw='participant'; $2.type='addParticipant';$$=$2;}
+	| 'participant_actor' actor 'AS' restOfLine 'NEWLINE' {$2.draw='actor'; $2.type='addParticipant';$2.description=yy.parseMessage($4); $$=$2;}
+	| 'participant_actor' actor 'NEWLINE' {$2.draw='actor'; $2.type='addParticipant'; $$=$2;}
+	| 'destroy' actor 'NEWLINE' {$2.type='destroyParticipant'; $$=$2;}
 	;
 
 note_statement

packages/mermaid/src/diagrams/sequence/sequenceDb.js

@@ -14,12 +14,16 @@ import {
 
 let prevActor = undefined;
 let actors = {};
+let createdActors = {};
+let destroyedActors = {};
 let boxes = [];
 let messages = [];
 const notes = [];
 let sequenceNumbersEnabled = false;
 let wrapEnabled;
 let currentBox = undefined;
+let lastCreated = undefined;
+let lastDestroyed = undefined;
 
 export const parseDirective = function (statement, context, type) {
   mermaidAPI.parseDirective(this, statement, context, type);
@@ -165,6 +169,12 @@ export const getBoxes = function () {
 export const getActors = function () {
   return actors;
 };
+export const getCreatedActors = function () {
+  return createdActors;
+};
+export const getDestroyedActors = function () {
+  return destroyedActors;
+};
 export const getActor = function (id) {
   return actors[id];
 };
@@ -194,6 +204,8 @@ export const autoWrap = () => {
 
 export const clear = function () {
   actors = {};
+  createdActors = {};
+  destroyedActors = {};
   boxes = [];
   messages = [];
   sequenceNumbersEnabled = false;
@@ -459,10 +471,21 @@ export const apply = function (param) {
         });
         break;
       case 'addParticipant':
-        addActor(param.actor, param.actor, param.description, 'participant');
+        addActor(param.actor, param.actor, param.description, param.draw);
         break;
-      case 'addActor':
-        addActor(param.actor, param.actor, param.description, 'actor');
+      case 'createParticipant':
+        if (actors[param.actor]) {
+          throw new Error(
+            "It is not possible to have actors with the same id, even if one is destroyed before the next is created. Use 'AS' aliases to simulate the behavior"
+          );
+        }
+        lastCreated = param.actor;
+        addActor(param.actor, param.actor, param.description, param.draw);
+        createdActors[param.actor] = messages.length;
+        break;
+      case 'destroyParticipant':
+        lastDestroyed = param.actor;
+        destroyedActors[param.actor] = messages.length;
         break;
       case 'activeStart':
         addSignal(param.actor, undefined, undefined, param.signalType);
@@ -486,6 +509,27 @@ export const apply = function (param) {
         addDetails(param.actor, param.text);
         break;
       case 'addMessage':
+        if (lastCreated) {
+          if (param.to !== lastCreated) {
+            throw new Error(
+              'The created participant ' +
+                lastCreated +
+                ' does not have an associated creating message after its declaration. Please check the sequence diagram.'
+            );
+          } else {
+            lastCreated = undefined;
+          }
+        } else if (lastDestroyed) {
+          if (param.to !== lastDestroyed && param.from !== lastDestroyed) {
+            throw new Error(
+              'The destroyed participant ' +
+                lastDestroyed +
+                ' does not have an associated destroying message after its declaration. Please check the sequence diagram.'
+            );
+          } else {
+            lastDestroyed = undefined;
+          }
+        }
         addSignal(param.from, param.to, param.msg, param.signalType);
         break;
       case 'boxStart':
@@ -566,6 +610,8 @@ export default {
   showSequenceNumbers,
   getMessages,
   getActors,
+  getCreatedActors,
+  getDestroyedActors,
   getActor,
   getActorKeys,
   getActorProperty,

packages/mermaid/src/diagrams/sequence/sequenceDiagram.spec.js

@@ -1404,6 +1404,62 @@ link a: Tests @ https://tests.contoso.com/?svc=alice@contoso.com
     expect(boxes[0].actorKeys).toEqual(['a', 'b']);
     expect(boxes[0].fill).toEqual('Aqua');
   });
+
+  it('should handle simple actor creation', async () => {
+    const str = `
+  sequenceDiagram
+  participant a as Alice
+  a ->>b: Hello Bob?
+  create participant c
+  b-->>c: Hello c!
+  c ->> b: Hello b?
+  create actor d as Donald
+  a ->> d: Hello Donald?
+  `;
+    await mermaidAPI.parse(str);
+    const actors = diagram.db.getActors();
+    const createdActors = diagram.db.getCreatedActors();
+    expect(actors['c'].name).toEqual('c');
+    expect(actors['c'].description).toEqual('c');
+    expect(actors['c'].type).toEqual('participant');
+    expect(createdActors['c']).toEqual(1);
+    expect(actors['d'].name).toEqual('d');
+    expect(actors['d'].description).toEqual('Donald');
+    expect(actors['d'].type).toEqual('actor');
+    expect(createdActors['d']).toEqual(3);
+  });
+  it('should handle simple actor destruction', async () => {
+    const str = `
+  sequenceDiagram
+  participant a as Alice
+  a ->>b: Hello Bob?
+  destroy a
+  b-->>a: Hello Alice!
+  b ->> c: Where is Alice?
+  destroy c
+  b ->> c: Where are you?
+  `;
+    await mermaidAPI.parse(str);
+    const destroyedActors = diagram.db.getDestroyedActors();
+    expect(destroyedActors['a']).toEqual(1);
+    expect(destroyedActors['c']).toEqual(3);
+  });
+  it('should handle the creation and destruction of the same actor', async () => {
+    const str = `
+  sequenceDiagram
+  a ->>b: Hello Bob?
+  create participant c
+  b ->>c: Hello c!
+  c ->> b: Hello b?
+  destroy c
+  b ->> c : Bye c !
+  `;
+    await mermaidAPI.parse(str);
+    const createdActors = diagram.db.getCreatedActors();
+    const destroyedActors = diagram.db.getDestroyedActors();
+    expect(createdActors['c']).toEqual(1);
+    expect(destroyedActors['c']).toEqual(3);
+  });
 });
 describe('when checking the bounds in a sequenceDiagram', function () {
   beforeAll(() => {
@@ -1973,7 +2029,9 @@ participant Alice`;
       expect(bounds.startx).toBe(0);
       expect(bounds.starty).toBe(0);
       expect(bounds.stopx).toBe(conf.width);
-      expect(bounds.stopy).toBe(models.lastActor().y + models.lastActor().height + conf.boxMargin);
+      expect(bounds.stopy).toBe(
+        models.lastActor().stopy + models.lastActor().height + conf.boxMargin
+      );
     });
   });
 });
@@ -2025,7 +2083,7 @@ participant Alice
     expect(bounds.startx).toBe(0);
     expect(bounds.starty).toBe(0);
     expect(bounds.stopy).toBe(
-      models.lastActor().y + models.lastActor().height + mermaid.sequence.boxMargin
+      models.lastActor().stopy + models.lastActor().height + mermaid.sequence.boxMargin
     );
   });
   it('should handle one actor, when logLevel is 3 (dfg0)', async () => {
@@ -2045,7 +2103,7 @@ participant Alice
     expect(bounds.startx).toBe(0);
     expect(bounds.starty).toBe(0);
     expect(bounds.stopy).toBe(
-      models.lastActor().y + models.lastActor().height + mermaid.sequence.boxMargin
+      models.lastActor().stopy + models.lastActor().height + mermaid.sequence.boxMargin
     );
   });
   it('should hide sequence numbers when autonumber is removed when autonumber is enabled', async () => {

packages/mermaid/src/diagrams/sequence/sequenceRenderer.ts

@@ -1,6 +1,6 @@
 // @ts-nocheck TODO: fix file
 import { select, selectAll } from 'd3';
-import svgDraw, { drawText, fixLifeLineHeights } from './svgDraw.js';
+import svgDraw, { ACTOR_TYPE_WIDTH, drawText, fixLifeLineHeights } from './svgDraw.js';
 import { log } from '../../logger.js';
 import common from '../common/common.js';
 import * as svgDrawCommon from '../common/svgDrawCommon';
@@ -478,29 +478,19 @@ const drawMessage = function (diagram, msgModel, lineStartY: number, diagObj: Di
   }
 };
 
-export const drawActors = function (
+const addActorRenderingData = function (
   diagram,
   actors,
+  createdActors,
   actorKeys,
   verticalPos,
-  configuration,
   messages,
   isFooter
 ) {
-  if (configuration.hideUnusedParticipants === true) {
-    const newActors = new Set();
-    messages.forEach((message) => {
-      newActors.add(message.from);
-      newActors.add(message.to);
-    });
-    actorKeys = actorKeys.filter((actorKey) => newActors.has(actorKey));
-  }
-
-  // Draw the actors
   let prevWidth = 0;
   let prevMargin = 0;
-  let maxHeight = 0;
   let prevBox = undefined;
+  let maxHeight = 0;
 
   for (const actorKey of actorKeys) {
     const actor = actors[actorKey];
@@ -528,12 +518,16 @@ export const drawActors = function (
     actor.height = common.getMax(actor.height || conf.height, conf.height);
     actor.margin = actor.margin || conf.actorMargin;
 
-    actor.x = prevWidth + prevMargin;
-    actor.y = bounds.getVerticalPos();
+    maxHeight = common.getMax(maxHeight, actor.height);
+
+    // if the actor is created by a message, widen margin
+    if (createdActors[actor.name]) {
+      prevMargin += actor.width / 2;
+    }
+
+    actor.x = prevWidth + prevMargin;
+    actor.starty = bounds.getVerticalPos();
 
-    // Draw the box with the attached line
-    const height = svgDraw.drawActor(diagram, actor, conf, isFooter);
-    maxHeight = common.getMax(maxHeight, height);
     bounds.insert(actor.x, verticalPos, actor.x + actor.width, actor.height);
 
     prevWidth += actor.width + prevMargin;
@@ -554,6 +548,28 @@ export const drawActors = function (
   bounds.bumpVerticalPos(maxHeight);
 };
 
+export const drawActors = function (diagram, actors, actorKeys, isFooter) {
+  if (!isFooter) {
+    for (const actorKey of actorKeys) {
+      const actor = actors[actorKey];
+      // Draw the box with the attached line
+      svgDraw.drawActor(diagram, actor, conf, false);
+    }
+  } else {
+    let maxHeight = 0;
+    bounds.bumpVerticalPos(conf.boxMargin * 2);
+    for (const actorKey of actorKeys) {
+      const actor = actors[actorKey];
+      if (!actor.stopy) {
+        actor.stopy = bounds.getVerticalPos();
+      }
+      const height = svgDraw.drawActor(diagram, actor, conf, true);
+      maxHeight = common.getMax(maxHeight, height);
+    }
+    bounds.bumpVerticalPos(maxHeight + conf.boxMargin);
+  }
+};
+
 export const drawActorsPopup = function (diagram, actors, actorKeys, doc) {
   let maxHeight = 0;
   let maxWidth = 0;
@@ -633,6 +649,95 @@ function adjustLoopHeightForWrap(loopWidths, msg, preMargin, postMargin, addLoop
   bounds.bumpVerticalPos(heightAdjust);
 }
 
+/**
+ * Adjust the msgModel and the actor for the rendering in case the latter is created or destroyed by the msg
+ * @param msg - the potentially creating or destroying message
+ * @param msgModel - the model associated with the message
+ * @param lineStartY - the y position of the message line
+ * @param index - the index of the current actor under consideration
+ * @param actors - the array of all actors
+ * @param createdActors - the array of actors created in the diagram
+ * @param destroyedActors - the array of actors destroyed in the diagram
+ */
+function adjustCreatedDestroyedData(
+  msg,
+  msgModel,
+  lineStartY,
+  index,
+  actors,
+  createdActors,
+  destroyedActors
+) {
+  function receiverAdjustment(actor, adjustment) {
+    if (actor.x < actors[msg.from].x) {
+      bounds.insert(
+        msgModel.stopx - adjustment,
+        msgModel.starty,
+        msgModel.startx,
+        msgModel.stopy + actor.height / 2 + conf.noteMargin
+      );
+      msgModel.stopx = msgModel.stopx + adjustment;
+    } else {
+      bounds.insert(
+        msgModel.startx,
+        msgModel.starty,
+        msgModel.stopx + adjustment,
+        msgModel.stopy + actor.height / 2 + conf.noteMargin
+      );
+      msgModel.stopx = msgModel.stopx - adjustment;
+    }
+  }
+
+  function senderAdjustment(actor, adjustment) {
+    if (actor.x < actors[msg.to].x) {
+      bounds.insert(
+        msgModel.startx - adjustment,
+        msgModel.starty,
+        msgModel.stopx,
+        msgModel.stopy + actor.height / 2 + conf.noteMargin
+      );
+      msgModel.startx = msgModel.startx + adjustment;
+    } else {
+      bounds.insert(
+        msgModel.stopx,
+        msgModel.starty,
+        msgModel.startx + adjustment,
+        msgModel.stopy + actor.height / 2 + conf.noteMargin
+      );
+      msgModel.startx = msgModel.startx - adjustment;
+    }
+  }
+
+  // if it is a create message
+  if (createdActors[msg.to] == index) {
+    const actor = actors[msg.to];
+    const adjustment = actor.type == 'actor' ? ACTOR_TYPE_WIDTH / 2 + 3 : actor.width / 2 + 3;
+    receiverAdjustment(actor, adjustment);
+    actor.starty = lineStartY - actor.height / 2;
+    bounds.bumpVerticalPos(actor.height / 2);
+  }
+  // if it is a destroy sender message
+  else if (destroyedActors[msg.from] == index) {
+    const actor = actors[msg.from];
+    if (conf.mirrorActors) {
+      const adjustment = actor.type == 'actor' ? ACTOR_TYPE_WIDTH / 2 : actor.width / 2;
+      senderAdjustment(actor, adjustment);
+    }
+    actor.stopy = lineStartY - actor.height / 2;
+    bounds.bumpVerticalPos(actor.height / 2);
+  }
+  // if it is a destroy receiver message
+  else if (destroyedActors[msg.to] == index) {
+    const actor = actors[msg.to];
+    if (conf.mirrorActors) {
+      const adjustment = actor.type == 'actor' ? ACTOR_TYPE_WIDTH / 2 + 3 : actor.width / 2 + 3;
+      receiverAdjustment(actor, adjustment);
+    }
+    actor.stopy = lineStartY - actor.height / 2;
+    bounds.bumpVerticalPos(actor.height / 2);
+  }
+}
+
 /**
  * Draws a sequenceDiagram in the tag with id: id based on the graph definition in text.
  *
@@ -666,8 +771,10 @@ export const draw = function (_text: string, id: string, _version: string, diagO
 
   // Fetch data from the parsing
   const actors = diagObj.db.getActors();
+  const createdActors = diagObj.db.getCreatedActors();
+  const destroyedActors = diagObj.db.getDestroyedActors();
   const boxes = diagObj.db.getBoxes();
-  const actorKeys = diagObj.db.getActorKeys();
+  let actorKeys = diagObj.db.getActorKeys();
   const messages = diagObj.db.getMessages();
   const title = diagObj.db.getDiagramTitle();
   const hasBoxes = diagObj.db.hasAtLeastOneBox();
@@ -686,7 +793,16 @@ export const draw = function (_text: string, id: string, _version: string, diagO
     }
   }
 
-  drawActors(diagram, actors, actorKeys, 0, conf, messages, false);
+  if (conf.hideUnusedParticipants === true) {
+    const newActors = new Set();
+    messages.forEach((message) => {
+      newActors.add(message.from);
+      newActors.add(message.to);
+    });
+    actorKeys = actorKeys.filter((actorKey) => newActors.has(actorKey));
+  }
+
+  addActorRenderingData(diagram, actors, createdActors, actorKeys, 0, messages, false);
   const loopWidths = calculateLoopBounds(messages, actors, maxMessageWidthPerActor, diagObj);
 
   // The arrow head definition is attached to the svg once
@@ -720,7 +836,8 @@ export const draw = function (_text: string, id: string, _version: string, diagO
   let sequenceIndex = 1;
   let sequenceIndexStep = 1;
   const messagesToDraw = [];
-  messages.forEach(function (msg) {
+  const backgrounds = [];
+  messages.forEach(function (msg, index) {
     let loopModel, noteModel, msgModel;
 
     switch (msg.type) {
@@ -757,7 +874,7 @@ export const draw = function (_text: string, id: string, _version: string, diagO
         break;
       case diagObj.db.LINETYPE.RECT_END:
         loopModel = bounds.endLoop();
-        svgDraw.drawBackgroundRect(diagram, loopModel);
+        backgrounds.push(loopModel);
         bounds.models.addLoop(loopModel);
         bounds.bumpVerticalPos(loopModel.stopy - bounds.getVerticalPos());
         break;
@@ -876,13 +993,20 @@ export const draw = function (_text: string, id: string, _version: string, diagO
         break;
       default:
         try {
-          // lastMsg = msg
-          bounds.resetVerticalPos();
           msgModel = msg.msgModel;
           msgModel.starty = bounds.getVerticalPos();
           msgModel.sequenceIndex = sequenceIndex;
           msgModel.sequenceVisible = diagObj.db.showSequenceNumbers();
           const lineStartY = boundMessage(diagram, msgModel);
+          adjustCreatedDestroyedData(
+            msg,
+            msgModel,
+            lineStartY,
+            index,
+            actors,
+            createdActors,
+            destroyedActors
+          );
           messagesToDraw.push({ messageModel: msgModel, lineStartY: lineStartY });
           bounds.models.addMessage(msgModel);
         } catch (e) {
@@ -907,15 +1031,16 @@ export const draw = function (_text: string, id: string, _version: string, diagO
     }
   });
 
-  messagesToDraw.forEach((e) => drawMessage(diagram, e.messageModel, e.lineStartY, diagObj));
+  log.debug('createdActors', createdActors);
+  log.debug('destroyedActors', destroyedActors);
 
+  drawActors(diagram, actors, actorKeys, false);
+  messagesToDraw.forEach((e) => drawMessage(diagram, e.messageModel, e.lineStartY, diagObj));
   if (conf.mirrorActors) {
-    // Draw actors below diagram
-    bounds.bumpVerticalPos(conf.boxMargin * 2);
-    drawActors(diagram, actors, actorKeys, bounds.getVerticalPos(), conf, messages, true);
-    bounds.bumpVerticalPos(conf.boxMargin);
-    fixLifeLineHeights(diagram, bounds.getVerticalPos());
+    drawActors(diagram, actors, actorKeys, true);
   }
+  backgrounds.forEach((e) => svgDraw.drawBackgroundRect(diagram, e));
+  fixLifeLineHeights(diagram, actors, actorKeys, conf);
 
   bounds.models.boxes.forEach(function (box) {
     box.height = bounds.getVerticalPos() - box.y;
@@ -937,11 +1062,6 @@ export const draw = function (_text: string, id: string, _version: string, diagO
 
   const { bounds: box } = bounds.getBounds();
 
-  // Adjust line height of actor lines now that the height of the diagram is known
-  log.debug('For line height fix Querying: #' + id + ' .actor-line');
-  const actorLines = selectAll('#' + id + ' .actor-line');
-  actorLines.attr('y2', box.stopy);
-
   // Make sure the height of the diagram supports long menus.
   let boxHeight = box.stopy - box.starty;
   if (boxHeight < requiredBoxSize.maxHeight) {

packages/mermaid/src/diagrams/sequence/svgDraw.js

@@ -4,6 +4,8 @@ import { addFunction } from '../../interactionDb.js';
 import { ZERO_WIDTH_SPACE, parseFontSize } from '../../utils.js';
 import { sanitizeUrl } from '@braintree/sanitize-url';
 
+export const ACTOR_TYPE_WIDTH = 18 * 2;
+
 export const drawRect = function (elem, rectData) {
   return svgDrawCommon.drawRect(elem, rectData);
 };
@@ -294,14 +296,19 @@ export const drawLabel = function (elem, txtObject) {
 
 let actorCnt = -1;
 
-export const fixLifeLineHeights = (diagram, bounds) => {
-  if (!diagram.selectAll) {
+export const fixLifeLineHeights = (diagram, actors, actorKeys, conf) => {
+  if (!diagram.select) {
     return;
   }
-  diagram
-    .selectAll('.actor-line')
-    .attr('class', '200')
-    .attr('y2', bounds - 55);
+  actorKeys.forEach((actorKey) => {
+    const actor = actors[actorKey];
+    const actorDOM = diagram.select('#actor' + actor.actorCnt);
+    if (!conf.mirrorActors && actor.stopy) {
+      actorDOM.attr('y2', actor.stopy + actor.height / 2);
+    } else if (conf.mirrorActors) {
+      actorDOM.attr('y2', actor.stopy);
+    }
+  });
 };
 
 /**
@@ -313,10 +320,11 @@ export const fixLifeLineHeights = (diagram, bounds) => {
  * @param {boolean} isFooter - If the actor is the footer one
  */
 const drawActorTypeParticipant = function (elem, actor, conf, isFooter) {
+  const actorY = isFooter ? actor.stopy : actor.starty;
   const center = actor.x + actor.width / 2;
-  const centerY = actor.y + 5;
+  const centerY = actorY + 5;
 
-  const boxpluslineGroup = elem.append('g');
+  const boxpluslineGroup = elem.append('g').lower();
   var g = boxpluslineGroup;
 
   if (!isFooter) {
@@ -328,6 +336,7 @@ const drawActorTypeParticipant = function (elem, actor, conf, isFooter) {
       .attr('x2', center)
       .attr('y2', 2000)
       .attr('class', 'actor-line')
+      .attr('class', '200')
       .attr('stroke-width', '0.5px')
       .attr('stroke', '#999');
 
@@ -348,7 +357,7 @@ const drawActorTypeParticipant = function (elem, actor, conf, isFooter) {
     rect.fill = '#eaeaea';
   }
   rect.x = actor.x;
-  rect.y = actor.y;
+  rect.y = actorY;
   rect.width = actor.width;
   rect.height = actor.height;
   rect.class = cssclass;
@@ -388,8 +397,11 @@ const drawActorTypeParticipant = function (elem, actor, conf, isFooter) {
 };
 
 const drawActorTypeActor = function (elem, actor, conf, isFooter) {
+  const actorY = isFooter ? actor.stopy : actor.starty;
   const center = actor.x + actor.width / 2;
-  const centerY = actor.y + 80;
+  const centerY = actorY + 80;
+
+  elem.lower();
 
   if (!isFooter) {
     actorCnt++;
@@ -401,15 +413,18 @@ const drawActorTypeActor = function (elem, actor, conf, isFooter) {
       .attr('x2', center)
       .attr('y2', 2000)
       .attr('class', 'actor-line')
+      .attr('class', '200')
       .attr('stroke-width', '0.5px')
       .attr('stroke', '#999');
+
+    actor.actorCnt = actorCnt;
   }
   const actElem = elem.append('g');
   actElem.attr('class', 'actor-man');
 
   const rect = svgDrawCommon.getNoteRect();
   rect.x = actor.x;
-  rect.y = actor.y;
+  rect.y = actorY;
   rect.fill = '#eaeaea';
   rect.width = actor.width;
   rect.height = actor.height;
@@ -421,33 +436,33 @@ const drawActorTypeActor = function (elem, actor, conf, isFooter) {
     .append('line')
     .attr('id', 'actor-man-torso' + actorCnt)
     .attr('x1', center)
-    .attr('y1', actor.y + 25)
+    .attr('y1', actorY + 25)
     .attr('x2', center)
-    .attr('y2', actor.y + 45);
+    .attr('y2', actorY + 45);
 
   actElem
     .append('line')
     .attr('id', 'actor-man-arms' + actorCnt)
-    .attr('x1', center - 18)
-    .attr('y1', actor.y + 33)
-    .attr('x2', center + 18)
-    .attr('y2', actor.y + 33);
+    .attr('x1', center - ACTOR_TYPE_WIDTH / 2)
+    .attr('y1', actorY + 33)
+    .attr('x2', center + ACTOR_TYPE_WIDTH / 2)
+    .attr('y2', actorY + 33);
   actElem
     .append('line')
-    .attr('x1', center - 18)
-    .attr('y1', actor.y + 60)
+    .attr('x1', center - ACTOR_TYPE_WIDTH / 2)
+    .attr('y1', actorY + 60)
     .attr('x2', center)
-    .attr('y2', actor.y + 45);
+    .attr('y2', actorY + 45);
   actElem
     .append('line')
     .attr('x1', center)
-    .attr('y1', actor.y + 45)
-    .attr('x2', center + 16)
-    .attr('y2', actor.y + 60);
+    .attr('y1', actorY + 45)
+    .attr('x2', center + ACTOR_TYPE_WIDTH / 2 - 2)
+    .attr('y2', actorY + 60);
 
   const circle = actElem.append('circle');
   circle.attr('cx', actor.x + actor.width / 2);
-  circle.attr('cy', actor.y + 10);
+  circle.attr('cy', actorY + 10);
   circle.attr('r', 15);
   circle.attr('width', actor.width);
   circle.attr('height', actor.height);

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/diagrams/state/stateRenderer.js

@@ -57,8 +57,6 @@ export const draw = function (text, id, _version, diagObj) {
       : select('body');
   const doc = securityLevel === 'sandbox' ? sandboxElement.nodes()[0].contentDocument : document;
 
-  // diagObj.db.clear();
-  // parser.parse(text);
   log.debug('Rendering diagram ' + text);
 
   // Fetch the default direction, use TD if none was found

packages/mermaid/src/diagrams/timeline/timelineRenderer.ts

@@ -30,12 +30,6 @@ export const draw = function (text: string, id: string, version: string, diagObj
   // @ts-expect-error - wrong config?
   const LEFT_MARGIN = conf.leftMargin ?? 50;
 
-  //2. Clear the diagram db before parsing
-  diagObj.db.clear?.();
-
-  //3. Parse the diagram text
-  diagObj.parser.parse(text + '\n');
-
   log.debug('timeline', diagObj.db);
 
   const securityLevel = conf.securityLevel;

packages/mermaid/src/diagrams/user-journey/journeyRenderer.ts

@@ -49,8 +49,6 @@ const conf = getConfig().journey;
 const LEFT_MARGIN = conf.leftMargin;
 export const draw = function (text, id, version, diagObj) {
   const conf = getConfig().journey;
-  diagObj.db.clear();
-  diagObj.parser.parse(text + '\n');
 
   const securityLevel = getConfig().securityLevel;
   // Handle root and Document for when rendering in sandbox mode

packages/mermaid/src/docs.mts

@@ -34,7 +34,7 @@ import { readFileSync, writeFileSync, mkdirSync, existsSync, rmSync, rmdirSync }
 import { exec } from 'child_process';
 import { globby } from 'globby';
 import { JSDOM } from 'jsdom';
-import type { Code, Root } from 'mdast';
+import type { Code, ListItem, Root, Text } from 'mdast';
 import { posix, dirname, relative, join } from 'path';
 import prettier from 'prettier';
 import { remark } from 'remark';
@@ -44,6 +44,7 @@ import chokidar from 'chokidar';
 import mm from 'micromatch';
 // @ts-ignore No typescript declaration file
 import flatmap from 'unist-util-flatmap';
+import { visit } from 'unist-util-visit';
 
 const MERMAID_MAJOR_VERSION = (
   JSON.parse(readFileSync('../mermaid/package.json', 'utf8')).version as string
@@ -122,7 +123,7 @@ const changeToFinalDocDir = (file: string): string => {
 const logWasOrShouldBeTransformed = (filename: string, wasCopied: boolean) => {
   const changeMsg = wasCopied ? LOGMSG_TRANSFORMED : LOGMSG_TO_BE_TRANSFORMED;
   let logMsg: string;
-  logMsg = `  File ${changeMsg}: ${filename}`;
+  logMsg = `  File ${changeMsg}: ${filename.replace(FINAL_DOCS_DIR, SOURCE_DOCS_DIR)}`;
   if (wasCopied) {
     logMsg += LOGMSG_COPIED;
   }
@@ -150,6 +151,7 @@ const copyTransformedContents = (filename: string, doCopy = false, transformedCo
   }
 
   filesTransformed.add(fileInFinalDocDir);
+
   if (doCopy) {
     writeFileSync(fileInFinalDocDir, newBuffer);
   }
@@ -321,6 +323,123 @@ const transformMarkdown = (file: string) => {
   copyTransformedContents(file, !verifyOnly, formatted);
 };
 
+import { load, JSON_SCHEMA } from 'js-yaml';
+// @ts-ignore: we're importing internal jsonschema2md functions
+import { default as schemaLoader } from '@adobe/jsonschema2md/lib/schemaProxy.js';
+// @ts-ignore: we're importing internal jsonschema2md functions
+import { default as traverseSchemas } from '@adobe/jsonschema2md/lib/traverseSchema.js';
+// @ts-ignore: we're importing internal jsonschema2md functions
+import { default as buildMarkdownFromSchema } from '@adobe/jsonschema2md/lib/markdownBuilder.js';
+// @ts-ignore: we're importing internal jsonschema2md functions
+import { default as jsonSchemaReadmeBuilder } from '@adobe/jsonschema2md/lib/readmeBuilder.js';
+
+/**
+ * Transforms the given JSON Schema into Markdown documentation
+ */
+async function transormJsonSchema(file: string) {
+  const yamlContents = readSyncedUTF8file(file);
+  const jsonSchema = load(yamlContents, {
+    filename: file,
+    // only allow JSON types in our YAML doc (will probably be default in YAML 1.3)
+    // e.g. `true` will be parsed a boolean `true`, `True` will be parsed as string `"True"`.
+    schema: JSON_SCHEMA,
+  });
+
+  /** Location of the `schema.yaml` files */
+  const SCHEMA_INPUT_DIR = 'src/schemas/';
+  /**
+   * Location to store the generated `schema.json` file for the website
+   *
+   * Because Vitepress doesn't handle bundling `.json` files properly, we need
+   * to instead place it into a `public/` subdirectory.
+   */
+  const SCHEMA_OUTPUT_DIR = 'src/docs/public/schemas/';
+  const VITEPRESS_PUBLIC_DIR = 'src/docs/public';
+  /**
+   * Location to store the generated Schema Markdown docs.
+   * Links to JSON Schemas should automatically be rewritten to point to
+   * `SCHEMA_OUTPUT_DIR`.
+   */
+  const SCHEMA_MARKDOWN_OUTPUT_DIR = join('src', 'docs', 'config', 'schema-docs');
+
+  // write .schema.json files
+  const jsonFileName = file
+    .replace('.schema.yaml', '.schema.json')
+    .replace(SCHEMA_INPUT_DIR, SCHEMA_OUTPUT_DIR);
+  copyTransformedContents(jsonFileName, !verifyOnly, JSON.stringify(jsonSchema, undefined, 2));
+
+  const schemas = traverseSchemas([schemaLoader()(jsonFileName, jsonSchema)]);
+
+  // ignore output of this function
+  // for some reason, without calling this function, we get some broken links
+  // this is probably a bug in @adobe/jsonschema2md
+  jsonSchemaReadmeBuilder({ readme: true })(schemas);
+
+  // write Markdown files
+  const markdownFiles = buildMarkdownFromSchema({
+    header: true,
+    // links,
+    includeProperties: ['tsType'], // Custom TypeScript type
+    exampleFormat: 'json',
+    // skipProperties,
+    /**
+     * Automatically rewrite schema paths passed to `schemaLoader`
+     * (e.g. src/docs/schemas/config.schema.json)
+     * to relative links (e.g. /schemas/config.schema.json)
+     *
+     * See https://vitepress.vuejs.org/guide/asset-handling
+     *
+     * @param origin - Original schema path (relative to this script).
+     * @returns New absolute Vitepress path to schema
+     */
+    rewritelinks: (origin: string) => {
+      return `/${relative(VITEPRESS_PUBLIC_DIR, origin)}`;
+    },
+  })(schemas);
+
+  for (const [name, markdownAst] of Object.entries(markdownFiles)) {
+    /*
+     * Converts list entries of shape '- tsType: () => Partial<FontConfig>'
+     * into '- tsType: `() => Partial<FontConfig>`' (e.g. escaping with back-ticks),
+     * as otherwise VitePress doesn't like the <FontConfig> bit.
+     */
+    visit(markdownAst as Root, 'listItem', (listEntry: ListItem) => {
+      let listText: Text;
+      const blockItem = listEntry.children[0];
+      if (blockItem.type === 'paragraph' && blockItem.children[0].type === 'text') {
+        listText = blockItem.children[0];
+      } // @ts-expect-error: MD AST output from @adobe/jsonschema2md is technically wrong
+      else if (blockItem.type === 'text') {
+        listText = blockItem;
+      } else {
+        return; // skip
+      }
+
+      if (listText.value.startsWith('tsType: ')) {
+        listText.value = listText.value.replace(/tsType: (.*)/g, 'tsType: `$1`');
+      }
+    });
+
+    const transformed = remark()
+      .use(remarkGfm)
+      .use(remarkFrontmatter, ['yaml']) // support YAML front-matter in Markdown
+      .use(transformMarkdownAst, {
+        // mermaid project specific plugin
+        originalFilename: file,
+        addAutogeneratedWarning: !noHeader,
+        removeYAML: !noHeader,
+      })
+      .stringify(markdownAst as Root);
+
+    const formatted = prettier.format(transformed, {
+      parser: 'markdown',
+      ...prettierConfig,
+    });
+    const newFileName = join(SCHEMA_MARKDOWN_OUTPUT_DIR, `${name}.md`);
+    copyTransformedContents(newFileName, !verifyOnly, formatted);
+  }
+}
+
 /**
  * Transform an HTML file and write the transformed file to the directory for published
  * documentation
@@ -362,15 +481,15 @@ const transformHtml = (filename: string) => {
 };
 
 const getGlobs = (globs: string[]): string[] => {
-  globs.push(
-    '!**/dist',
-    '!**/redirect.spec.ts',
-    '!**/landing',
-    '!**/node_modules',
-    '!**/user-avatars'
-  );
+  globs.push('!**/dist/**', '!**/redirect.spec.ts', '!**/landing/**', '!**/node_modules/**');
   if (!vitepress) {
-    globs.push('!**/.vitepress', '!**/vite.config.ts', '!src/docs/index.md', '!**/package.json');
+    globs.push(
+      '!**/.vitepress/**',
+      '!**/vite.config.ts',
+      '!src/docs/index.md',
+      '!**/package.json',
+      '!**/user-avatars/**'
+    );
   }
   return globs;
 };
@@ -388,6 +507,14 @@ const main = async () => {
   const sourceDirGlob = posix.join('.', SOURCE_DOCS_DIR, '**');
   const action = verifyOnly ? 'Verifying' : 'Transforming';
 
+  if (vitepress) {
+    console.log(`${action} 1 .schema.yaml file`);
+    await transormJsonSchema('src/schemas/config.schema.yaml');
+  } else {
+    // skip because this creates so many Markdown files that it lags git
+    console.log('Skipping 1 .schema.yaml file');
+  }
+
   const mdFileGlobs = getGlobs([posix.join(sourceDirGlob, '*.md')]);
   const mdFiles = await getFilesFromGlobs(mdFileGlobs);
   console.log(`${action} ${mdFiles.length} markdown files...`);

packages/mermaid/src/docs/.vitepress/components/HomePage.vue

@@ -16,8 +16,12 @@ import { teamMembers } from '../contributors';
           <p text-lg max-w-200 text-center leading-7>
             <Contributors />
             <br />
-            <a href="https://chat.vitest.dev" rel="noopener noreferrer">Join the community</a> and
-            get involved!
+            <a
+              href="https://join.slack.com/t/mermaid-talk/shared_invite/enQtNzc4NDIyNzk4OTAyLWVhYjQxOTI2OTg4YmE1ZmJkY2Y4MTU3ODliYmIwOTY3NDJlYjA0YjIyZTdkMDMyZTUwOGI0NjEzYmEwODcwOTE"
+              rel="noopener noreferrer"
+              >Join the community</a
+            >
+            and get involved!
           </p>
         </div>
       </main>

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' },
       ],
     },
@@ -154,6 +155,7 @@ function sidebarConfig() {
         { text: 'Tutorials', link: '/config/Tutorials' },
         { text: 'API-Usage', link: '/config/usage' },
         { text: 'Mermaid API Configuration', link: '/config/setup/README' },
+        { text: 'Mermaid Configuration Options', link: '/config/schema-docs/config' },
         { text: 'Directives', link: '/config/directives' },
         { text: 'Theming', link: '/config/theming' },
         { text: 'Accessibility', link: '/config/accessibility' },

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

@@ -1,30 +1,5 @@
 import contributorUsernamesJson from './contributor-names.json';
-
-export interface Contributor {
-  name: string;
-  avatar: string;
-}
-
-export interface SocialEntry {
-  icon: string | { svg: string };
-  link: string;
-}
-
-export interface CoreTeam {
-  name: string;
-  // required to download avatars from GitHub
-  github: string;
-  avatar?: string;
-  twitter?: string;
-  mastodon?: string;
-  sponsor?: string;
-  website?: string;
-  linkedIn?: string;
-  title?: string;
-  org?: string;
-  desc?: string;
-  links?: SocialEntry[];
-}
+import { CoreTeam, knut, plainTeamMembers } from './teamMembers.js';
 
 const contributorUsernames: string[] = contributorUsernamesJson;
 
@@ -38,6 +13,7 @@ const websiteSVG = {
 
 const createLinks = (tm: CoreTeam): CoreTeam => {
   tm.avatar = `/user-avatars/${tm.github}.png`;
+  tm.title = tm.title ?? 'Developer';
   tm.links = [{ icon: 'github', link: `https://github.com/${tm.github}` }];
   if (tm.mastodon) {
     tm.links.push({ icon: 'mastodon', link: tm.mastodon });
@@ -54,91 +30,6 @@ const createLinks = (tm: CoreTeam): CoreTeam => {
   return tm;
 };
 
-const knut: CoreTeam = {
-  github: 'knsv',
-  name: 'Knut Sveidqvist',
-  title: 'Creator',
-  twitter: 'knutsveidqvist',
-  sponsor: 'https://github.com/sponsors/knsv',
-};
-
-const plainTeamMembers: CoreTeam[] = [
-  {
-    github: 'NeilCuzon',
-    name: 'Neil Cuzon',
-    title: 'Developer',
-  },
-  {
-    github: 'tylerlong',
-    name: 'Tyler Liu',
-    title: 'Developer',
-  },
-  {
-    github: 'sidharthv96',
-    name: 'Sidharth Vinod',
-    title: 'Developer',
-    twitter: 'sidv42',
-    mastodon: 'https://techhub.social/@sidv',
-    sponsor: 'https://github.com/sponsors/sidharthv96',
-    linkedIn: 'sidharth-vinod',
-    website: 'https://sidharth.dev',
-  },
-  {
-    github: 'ashishjain0512',
-    name: 'Ashish Jain',
-    title: 'Developer',
-  },
-  {
-    github: 'mmorel-35',
-    name: 'Matthieu Morel',
-    title: 'Developer',
-    linkedIn: 'matthieumorel35',
-  },
-  {
-    github: 'aloisklink',
-    name: 'Alois Klink',
-    title: 'Developer',
-    linkedIn: 'aloisklink',
-    website: 'https://aloisklink.com',
-  },
-  {
-    github: 'pbrolin47',
-    name: 'Per Brolin',
-    title: 'Developer',
-  },
-  {
-    github: 'Yash-Singh1',
-    name: 'Yash Singh',
-    title: 'Developer',
-  },
-  {
-    github: 'GDFaber',
-    name: 'Marc Faber',
-    title: 'Developer',
-    linkedIn: 'marc-faber',
-  },
-  {
-    github: 'MindaugasLaganeckas',
-    name: 'Mindaugas Laganeckas',
-    title: 'Developer',
-  },
-  {
-    github: 'jgreywolf',
-    name: 'Justin Greywolf',
-    title: 'Developer',
-  },
-  {
-    github: 'IOrlandoni',
-    name: 'Nacho Orlandoni',
-    title: 'Developer',
-  },
-  {
-    github: 'huynhicode',
-    name: 'Steph Huynh',
-    title: 'Developer',
-  },
-];
-
 const teamMembers = plainTeamMembers.map((tm) => createLinks(tm));
 teamMembers.sort(
   (a, b) => contributorUsernames.indexOf(a.github) - contributorUsernames.indexOf(b.github)

packages/mermaid/src/docs/.vitepress/mermaid-markdown-all.ts

@@ -54,6 +54,15 @@ const MermaidExample = async (md: MarkdownRenderer) => {
       return `<div class="tip custom-block"><p class="custom-block-title">NOTE</p><p>${token.content}}</p></div>`;
     }
 
+    if (token.info.trim() === 'regexp') {
+      // shiki doesn't yet support regexp code blocks, but the javascript
+      // one still makes RegExes look good
+      token.info = 'javascript';
+      // use trimEnd to move trailing `\n` outside if the JavaScript regex `/` block
+      token.content = `/${token.content.trimEnd()}/\n`;
+      return defaultRenderer(tokens, index, options, env, slf);
+    }
+
     if (token.info.trim() === 'jison') {
       return `<div class="language-">
       <button class="copy"></button>

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

@@ -18,7 +18,11 @@ 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);
+    // Exit the build process if we are in CI
+    if (process.env.CI) {
+      throw error;
+    }
   }
 }
 
@@ -26,10 +30,13 @@ 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.allSettled(avatars);
 }
 
 fetchAvatars();

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

@@ -1,6 +1,8 @@
 // Adapted from https://github.dev/vitest-dev/vitest/blob/991ff33ab717caee85ef6cbe1c16dc514186b4cc/scripts/update-contributors.ts#L6
 
 import { writeFile } from 'node:fs/promises';
+import { knut, plainTeamMembers } from '../teamMembers.js';
+import { existsSync } from 'node:fs';
 
 const pathContributors = new URL('../contributor-names.json', import.meta.url);
 
@@ -10,6 +12,7 @@ interface Contributor {
 
 async function fetchContributors() {
   const collaborators: string[] = [];
+  try {
     let page = 1;
     let data: Contributor[] = [];
     do {
@@ -27,11 +30,22 @@ async function fetchContributors() {
       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]'));
 }
 
 async function generate() {
-  const collaborators = await fetchContributors();
+  if (existsSync(pathContributors)) {
+    // Only fetch contributors once, when running locally.
+    // In CI, the file won't exist, so it'll fetch every time as expected.
+    return;
+  }
+  // Will fetch all contributors only in CI to speed up local development.
+  const collaborators = process.env.CI
+    ? await fetchContributors()
+    : [knut, ...plainTeamMembers].map((m) => m.github);
   await writeFile(pathContributors, JSON.stringify(collaborators, null, 2) + '\n', 'utf8');
 }
 

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

@@ -0,0 +1,105 @@
+export interface Contributor {
+  name: string;
+  avatar: string;
+}
+
+export interface SocialEntry {
+  icon: string | { svg: string };
+  link: string;
+}
+
+export interface CoreTeam {
+  name: string;
+  // required to download avatars from GitHub
+  github: string;
+  avatar?: string;
+  twitter?: string;
+  mastodon?: string;
+  sponsor?: string;
+  website?: string;
+  linkedIn?: string;
+  title?: string;
+  org?: string;
+  desc?: string;
+  links?: SocialEntry[];
+}
+
+export const knut: CoreTeam = {
+  github: 'knsv',
+  name: 'Knut Sveidqvist',
+  title: 'Creator',
+  twitter: 'knutsveidqvist',
+  sponsor: 'https://github.com/sponsors/knsv',
+};
+
+export const plainTeamMembers: CoreTeam[] = [
+  {
+    github: 'NeilCuzon',
+    name: 'Neil Cuzon',
+  },
+  {
+    github: 'tylerlong',
+    name: 'Tyler Liu',
+  },
+  {
+    github: 'sidharthv96',
+    name: 'Sidharth Vinod',
+    twitter: 'sidv42',
+    mastodon: 'https://techhub.social/@sidv',
+    sponsor: 'https://github.com/sponsors/sidharthv96',
+    linkedIn: 'sidharth-vinod',
+    website: 'https://sidharth.dev',
+  },
+  {
+    github: 'ashishjain0512',
+    name: 'Ashish Jain',
+  },
+  {
+    github: 'mmorel-35',
+    name: 'Matthieu Morel',
+    linkedIn: 'matthieumorel35',
+  },
+  {
+    github: 'aloisklink',
+    name: 'Alois Klink',
+    linkedIn: 'aloisklink',
+    website: 'https://aloisklink.com',
+  },
+  {
+    github: 'pbrolin47',
+    name: 'Per Brolin',
+  },
+  {
+    github: 'Yash-Singh1',
+    name: 'Yash Singh',
+  },
+  {
+    github: 'GDFaber',
+    name: 'Marc Faber',
+    linkedIn: 'marc-faber',
+  },
+  {
+    github: 'MindaugasLaganeckas',
+    name: 'Mindaugas Laganeckas',
+  },
+  {
+    github: 'jgreywolf',
+    name: 'Justin Greywolf',
+  },
+  {
+    github: 'IOrlandoni',
+    name: 'Nacho Orlandoni',
+  },
+  {
+    github: 'huynhicode',
+    name: 'Steph Huynh',
+  },
+  {
+    github: 'Yokozuna59',
+    name: 'Reda Al Sulais',
+  },
+  {
+    github: 'nirname',
+    name: 'Nikolay Rozhkov',
+  },
+];

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

@@ -20,6 +20,10 @@ The definitions that can be generated the Live-Editor are also backwards-compati
 
 [Eddie Jaoude: Can you code your diagrams?](https://www.youtube.com/watch?v=9HZzKkAqrX8)
 
+## Mermaid with OpenAI
+
+[Elle Neal: Mind Mapping with AI: An Accessible Approach for Neurodiverse Learners Tutorial:](https://medium.com/@elle.neal_71064/mind-mapping-with-ai-an-accessible-approach-for-neurodiverse-learners-1a74767359ff), [Demo:](https://databutton.com/v/jk9vrghc)
+
 ## Mermaid with HTML
 
 Examples are provided in [Getting Started](../intro/n00b-gettingStarted.md)