Merge branch 'develop' of https://github.com/NicolasNewman/mermaid into feature/2776_katex_math

.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

@@ -53,8 +53,17 @@ body:
         Please fill out the info below.
         Note that you only need to fill out the relevant section
       value: |-
-        - Mermaid version: 
+        - 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/pr-labeler.yml

@@ -1,3 +1,4 @@
-'Type: Bug / Error': 'bug/*'
-'Type: Enhancement': 'feature/*'
-'Type: Other': 'other/*'
+'Type: Bug / Error': ['bug/*', fix/*]
+'Type: Enhancement': ['feature/*', 'feat/*']
+'Type: Other': ['other/*', 'chore/*', 'test/*', 'refactor/*']
+'Area: Documentation': ['docs/*']

.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/pr-labeler-config-validator.yml

@@ -1,11 +1,15 @@
 name: Validate PR Labeler Configuration
 on:
-  push: {}
+  push:
+    paths:
+      - .github/workflows/pr-labeler-config-validator.yml
+      - .github/workflows/pr-labeler.yml
+      - .github/pr-labeler.yml
   pull_request:
-    types:
-      - opened
-      - synchronize
-      - ready_for_review
+    paths:
+      - .github/workflows/pr-labeler-config-validator.yml
+      - .github/workflows/pr-labeler.yml
+      - .github/pr-labeler.yml
 
 jobs:
   pr-labeler:

.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

README.md

@@ -386,7 +386,7 @@ Update version number in `package.json`.
 npm publish
 ```
 
-The above command generates files into the `dist` folder and publishes them to npmjs.org.
+The above command generates files into the `dist` folder and publishes them to <https://www.npmjs.com>.
 
 ## Related projects
 
@@ -402,7 +402,7 @@ Detailed information about how to contribute can be found in the [contribution g
 
 ## Security and safe diagrams
 
-For public sites, it can be precarious to retrieve text from users on the internet, storing that content for presentation in a browser at a later stage. The reason is that the user content can contain embedded malicious scripts that will run when the data is presented. For Mermaid this is a risk, specially as mermaid diagrams contain many characters that are used in html which makes the standard sanitation unusable as it also breaks the diagrams. We still make an effort to sanitise the incoming code and keep refining the process but it is hard to guarantee that there are no loop holes.
+For public sites, it can be precarious to retrieve text from users on the internet, storing that content for presentation in a browser at a later stage. The reason is that the user content can contain embedded malicious scripts that will run when the data is presented. For Mermaid this is a risk, specially as mermaid diagrams contain many characters that are used in html which makes the standard sanitation unusable as it also breaks the diagrams. We still make an effort to sanitize the incoming code and keep refining the process but it is hard to guarantee that there are no loop holes.
 
 As an extra level of security for sites with external users we are happy to introduce a new security level in which the diagram is rendered in a sandboxed iframe preventing javascript in the code from being executed. This is a great step forward for better security.
 

README.zh-CN.md

@@ -322,7 +322,7 @@ Rel(SystemC, customerA, "Sends e-mails to")
 npm publish
 ```
 
-以上的命令会将文件打包到 `dist` 目录并发布至 npmjs.org.
+以上的命令会将文件打包到 `dist` 目录并发布至 <https://www.npmjs.com>.
 
 ## 相关项目
 

__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

@@ -40,8 +40,10 @@
     "dompurify",
     "edgechromium",
     "elkjs",
+    "elle",
     "faber",
     "flatmap",
+    "foswiki",
     "ftplugin",
     "gantt",
     "gitea",
@@ -51,6 +53,7 @@
     "graphviz",
     "grav",
     "greywolf",
+    "gzipped",
     "huynh",
     "huynhicode",
     "inkdrop",
@@ -85,7 +88,10 @@
     "mkdocs",
     "mmorel",
     "mult",
+    "neurodiverse",
     "nextra",
+    "nikolay",
+    "nirname",
     "orlandoni",
     "pathe",
     "pbrolin",
@@ -99,10 +105,13 @@
     "ranksep",
     "rect",
     "rects",
+    "reda",
     "redmine",
     "rehype",
     "roledescription",
+    "rozhkov",
     "sandboxed",
+    "sankey",
     "setupgraphviewbox",
     "shiki",
     "sidharth",
@@ -117,6 +126,7 @@
     "stylis",
     "subhash-halder",
     "substate",
+    "sulais",
     "sveidqvist",
     "swimm",
     "techn",
@@ -140,6 +150,7 @@
     "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

@@ -1,9 +1,36 @@
 version: '3.9'
 services:
   mermaid:
-    image: node:18.16.0-alpine3.18
+    image: node:18.16.1-alpine3.18
     stdin_open: true
     tty: true
     working_dir: /mermaid
+    mem_limit: '2G'
+    environment:
+      - NODE_OPTIONS=--max_old_space_size=2048
     volumes:
       - ./:/mermaid
+      - root_cache:/root/.cache
+      - root_local:/root/.local
+      - root_npm:/root/.npm
+    ports:
+      - 9000:9000
+      - 3333:3333
+  cypress:
+    image: cypress/included:12.16.0
+    stdin_open: true
+    tty: true
+    working_dir: /mermaid
+    mem_limit: '2G'
+    entrypoint: cypress
+    environment:
+      - DISPLAY
+    volumes:
+      - ./:/mermaid
+      - /tmp/.X11-unix:/tmp/.X11-unix
+    network_mode: host
+
+volumes:
+  root_cache:
+  root_local:
+  root_npm:

docs/config/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:2304](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/defaultConfig.ts#L2304)
+[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

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

docs/ecosystem/integrations.md

@@ -66,7 +66,7 @@ They also serve as proof of concept, for the variety of things that can be built
 
 ## Blogs
 
-- [Wordpress](https://wordpress.org)
+- [WordPress](https://wordpress.org)
   - [WordPress Markdown Editor](https://wordpress.org/plugins/wp-githuber-md)
   - [WP-ReliableMD](https://wordpress.org/plugins/wp-reliablemd/)
 - [Hexo](https://hexo.io)
@@ -84,7 +84,7 @@ They also serve as proof of concept, for the variety of things that can be built
   - [Plugin for Mermaid.js](https://github.com/eFrane/vuepress-plugin-mermaidjs)
 - [Grav CMS](https://getgrav.org/)
   - [Mermaid Diagrams](https://github.com/DanielFlaum/grav-plugin-mermaid-diagrams)
-  - [Gitlab Markdown Adapter](https://github.com/Goutte/grav-plugin-gitlab-markdown-adapter)
+  - [GitLab Markdown Adapter](https://github.com/Goutte/grav-plugin-gitlab-markdown-adapter)
 
 ## Communication
 
@@ -104,7 +104,7 @@ They also serve as proof of concept, for the variety of things that can be built
   - [Flex Diagrams Extension](https://www.mediawiki.org/wiki/Extension:Flex_Diagrams)
 - [Semantic Media Wiki](https://semantic-mediawiki.org)
   - [Mermaid Plugin](https://github.com/SemanticMediaWiki/Mermaid)
-- [FosWiki](https://foswiki.org)
+- [Foswiki](https://foswiki.org)
   - [Mermaid Plugin](https://foswiki.org/Extensions/MermaidPlugin)
 - [DokuWiki](https://dokuwiki.org)
   - [Mermaid Plugin](https://www.dokuwiki.org/plugin:mermaid)
@@ -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
 
@@ -172,7 +174,7 @@ They also serve as proof of concept, for the variety of things that can be built
   - [rehype-mermaidjs](https://github.com/remcohaszing/rehype-mermaidjs)
 - [Gatsby](https://www.gatsbyjs.com/)
   - [gatsby-remark-mermaid](https://github.com/remcohaszing/gatsby-remark-mermaid)
-- [jSDoc](https://jsdoc.app/)
+- [JSDoc](https://jsdoc.app/)
   - [jsdoc-mermaid](https://github.com/Jellyvision/jsdoc-mermaid)
 - [MkDocs](https://www.mkdocs.org)
   - [mkdocs-mermaid2-plugin](https://github.com/fralau/mkdocs-mermaid2-plugin)

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

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

docs/syntax/sankey.md

@@ -0,0 +1,294 @@
+> **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@8.6.2",
+  "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",
@@ -121,7 +123,7 @@
     "vitest": "^0.32.2"
   },
   "volta": {
-    "node": "18.16.0"
+    "node": "18.16.1"
   },
   "nyc": {
     "report-dir": "coverage/cypress"

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:dev": "pnpm docs:pre:vitepress && concurrently \"pnpm --filter ./ src/vitepress dev\" \"ts-node-esm src/docs.mts --watch --vitepress\"",
+    "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",
     "katex": "^0.15.2",
     "khroma": "^2.0.0",
@@ -72,8 +78,10 @@
     "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",
@@ -84,6 +92,7 @@
     "@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",
@@ -93,7 +102,8 @@
     "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",
@@ -106,6 +116,7 @@
     "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;
-      svg.attr('aria-describedby', descId);
-      svg.insert('desc', ':first-child').attr('id', descId).text(a11yDesc);
-    }
-    if (a11yTitle) {
-      const titleId = 'chart-title-' + baseId;
-      svg.attr('aria-labelledby', titleId);
-      svg.insert('title', ':first-child').attr('id', titleId).text(a11yTitle);
-    }
-  } else {
-    return;
+  if (a11yDesc) {
+    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}`;
+    svg.attr('aria-labelledby', titleId);
+    svg.insert('title', ':first-child').attr('id', titleId).text(a11yTitle);
   }
 }

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/GraphObjects.md

@@ -1,6 +1,6 @@
 # Cluster handling
 
-Dagre does not support edges between nodes and clusters or between clusters to other clusters. In order to remedy this shortcoming the dagre wrapper implements a few work-arounds.
+Dagre does not support edges between nodes and clusters or between clusters to other clusters. In order to remedy this shortcoming the dagre wrapper implements a few workarounds.
 
 In the diagram below there are two clusters and there are no edges to nodes outside the own cluster.
 
@@ -73,7 +73,7 @@ Sample object:
 }
 ```
 
-This is set by the renderer of the diagram and insert the data that the wrapper neds for rendering.
+This is set by the renderer of the diagram and insert the data that the wrapper needs for rendering.
 
 | property   | description                                                                                      |
 | ---------- | ------------------------------------------------------------------------------------------------ |
@@ -114,7 +114,7 @@ Required edgeData for proper rendering:
 | label      | overlap between label and labelText?                                 |
 | labelPos   |                                                                      |
 | labelType  | overlap between label and labelText?                                 |
-| thickness  | Sets the thinkess of the edge. Can be \['normal', 'thick'\]          |
+| thickness  | Sets the thickness of the edge. Can be \['normal', 'thick'\]         |
 | pattern    | Sets the pattern of the edge. Can be \['solid', 'dotted', 'dashed'\] |
 
 # Markers

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);
-  }
+  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

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

packages/mermaid/src/diagrams/class/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) {
-  return tooltips[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

@@ -312,13 +312,6 @@ export const draw = async 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

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

packages/mermaid/src/diagrams/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

@@ -33,9 +33,6 @@ 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, { drawKatex, drawText, fixLifeLineHeights } from './svgDraw.js';
+import svgDraw, { drawKatex, ACTOR_TYPE_WIDTH, drawText, fixLifeLineHeights } from './svgDraw.js';
 import { log } from '../../logger.js';
 import common, { calculateMathMLDimensions, hasKatex } from '../common/common.js';
 import * as svgDrawCommon from '../common/svgDrawCommon';
@@ -485,29 +485,19 @@ const drawMessage = async function (diagram, msgModel, lineStartY: number, diagO
   }
 };
 
-export const drawActors = async function (
+const addActorRenderingData = async 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];
@@ -535,12 +525,16 @@ export const drawActors = async 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 = await 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;
@@ -561,6 +555,28 @@ export const drawActors = async function (
   bounds.bumpVerticalPos(maxHeight);
 };
 
+export const drawActors = async function (diagram, actors, actorKeys, isFooter) {
+  if (!isFooter) {
+    for (const actorKey of actorKeys) {
+      const actor = actors[actorKey];
+      // Draw the box with the attached line
+      await 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 = await 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;
@@ -640,6 +656,95 @@ 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.
  *
@@ -673,8 +778,10 @@ export const draw = async function (_text: string, id: string, _version: string,
 
   // 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();
@@ -693,7 +800,16 @@ export const draw = async function (_text: string, id: string, _version: string,
     }
   }
 
-  await 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));
+  }
+
+  await addActorRenderingData(diagram, actors, createdActors, actorKeys, 0, messages, false);
   const loopWidths = await calculateLoopBounds(messages, actors, maxMessageWidthPerActor, diagObj);
 
   // The arrow head definition is attached to the svg once
@@ -727,6 +843,8 @@ export const draw = async function (_text: string, id: string, _version: string,
   let sequenceIndex = 1;
   let sequenceIndexStep = 1;
   const messagesToDraw = [];
+  const backgrounds = [];
+  let index = 0;
   for (const msg of messages) {
     let loopModel, noteModel, msgModel;
 
@@ -764,7 +882,7 @@ export const draw = async function (_text: string, id: string, _version: string,
         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;
@@ -883,13 +1001,20 @@ export const draw = async function (_text: string, id: string, _version: string,
         break;
       default:
         try {
-          // lastMsg = msg
-          bounds.resetVerticalPos();
           msgModel = msg.msgModel;
           msgModel.starty = bounds.getVerticalPos();
           msgModel.sequenceIndex = sequenceIndex;
           msgModel.sequenceVisible = diagObj.db.showSequenceNumbers();
           const lineStartY = await boundMessage(diagram, msgModel);
+          adjustCreatedDestroyedData(
+            msg,
+            msgModel,
+            lineStartY,
+            index,
+            actors,
+            createdActors,
+            destroyedActors
+          );
           messagesToDraw.push({ messageModel: msgModel, lineStartY: lineStartY });
           bounds.models.addMessage(msgModel);
         } catch (e) {
@@ -912,19 +1037,21 @@ export const draw = async function (_text: string, id: string, _version: string,
     ) {
       sequenceIndex = sequenceIndex + sequenceIndexStep;
     }
+    index++;
   }
 
+  log.debug('createdActors', createdActors);
+  log.debug('destroyedActors', destroyedActors);
+
+  await drawActors(diagram, actors, actorKeys, false);
   for (const e of messagesToDraw) {
     await drawMessage(diagram, e.messageModel, e.lineStartY, diagObj);
   }
-
   if (conf.mirrorActors) {
-    // Draw actors below diagram
-    bounds.bumpVerticalPos(conf.boxMargin * 2);
-    await drawActors(diagram, actors, actorKeys, bounds.getVerticalPos(), conf, messages, true);
-    bounds.bumpVerticalPos(conf.boxMargin);
-    fixLifeLineHeights(diagram, bounds.getVerticalPos());
+    await drawActors(diagram, actors, actorKeys, true);
   }
+  backgrounds.forEach((e) => svgDraw.drawBackgroundRect(diagram, e));
+  fixLifeLineHeights(diagram, actors, actorKeys, conf);
 
   for (const box of bounds.models.boxes) {
     box.height = bounds.getVerticalPos() - box.y;
@@ -946,11 +1073,6 @@ export const draw = async function (_text: string, id: string, _version: string,
 
   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

@@ -5,6 +5,8 @@ import { ZERO_WIDTH_SPACE, parseFontSize } from '../../utils.js';
 import { sanitizeUrl } from '@braintree/sanitize-url';
 import * as configApi from '../../config.js';
 
+export const ACTOR_TYPE_WIDTH = 18 * 2;
+
 export const drawRect = function (elem, rectData) {
   return svgDrawCommon.drawRect(elem, rectData);
 };
@@ -336,14 +338,19 @@ 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);
+    }
+  });
 };
 
 /**
@@ -355,10 +362,11 @@ export const fixLifeLineHeights = (diagram, bounds) => {
  * @param {boolean} isFooter - If the actor is the footer one
  */
 const drawActorTypeParticipant = async 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) {
@@ -370,6 +378,7 @@ const drawActorTypeParticipant = async 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');
 
@@ -390,7 +399,7 @@ const drawActorTypeParticipant = async 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;
@@ -430,8 +439,12 @@ const drawActorTypeParticipant = async function (elem, actor, conf, isFooter) {
 };
 
 const drawActorTypeActor = async 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++;
     elem
@@ -442,15 +455,18 @@ const drawActorTypeActor = async 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;
@@ -462,33 +478,33 @@ const drawActorTypeActor = async 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: 'Math', link: '/config/math' },

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)