Mermaid flowchart-elk no longer works in 1.10.2-dev

[nanoant]

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---

Describe the bug
1.10.1 dev version updates mermaid to 11.3. However since 11.0 Mermaid no longer embeds elkjs (see https://github.com/mermaid-js/mermaid/releases/tag/v11.0.0 release notes) and sites/apps must install @mermaid-js/layout-elk see mermaid-js/mermaid#5049

To Reproduce
Steps to reproduce the behavior:

1. Use flowchart-elk on stable 1.9
2. Observe flowchart-elk it gives different results than flowchart
3. Update to 1.10.2 dev version
4. Observe that flowchart-elk looks exactly the same as flowchart using default Dagre engine

Expected behavior

Screenshots / Screencasts
What is see in 1.10.2-dev:

Sample Markdown File

~~~mermaid
flowchart-elk TB
A --> B((What))
A --> C
A --> D
~~~

Desktop (please complete the following information):

• OS: Mac & Windows

Typora Version
1.10.2-dev (7283) Mac, 1.10.1-dev Windows (since 1.10.2 is not available for Windows)

[nanoant]

Btw. I managed to produce mermaid.min.js including ELK again by applying following patch on [email protected] of https://github.com/mermaid-js/mermaid.git and running yarn install.

diff --git a/packages/mermaid/package.json b/packages/mermaid/package.json
index 78bf58388..104ecd966 100644
--- a/packages/mermaid/package.json
+++ b/packages/mermaid/package.json
@@ -106,6 +106,7 @@
     "@types/prettier": "^3.0.0",
     "@types/stylis": "^4.2.5",
     "@types/uuid": "^9.0.8",
+    "@mermaid-js/layout-elk": "^0.1.5",
     "ajv": "^8.12.0",
     "chokidar": "^3.6.0",
     "concurrently": "^8.2.2",
diff --git a/packages/mermaid/src/mermaid.ts b/packages/mermaid/src/mermaid.ts
index e9fc9196a..158ec79c6 100644
--- a/packages/mermaid/src/mermaid.ts
+++ b/packages/mermaid/src/mermaid.ts
@@ -20,6 +20,7 @@ import type { LayoutData } from './rendering-util/types.js';
 import type { ParseOptions, ParseResult, RenderResult } from './types.js';
 import type { DetailedError } from './utils.js';
 import utils, { isDetailedError } from './utils.js';
+import elkLayouts from '@mermaid-js/layout-elk';
 
 export type {
   DetailedError,
@@ -456,4 +457,6 @@ const mermaid: Mermaid = {
   registerIconPacks,
 };
 
+mermaid.registerLayoutLoaders(elkLayouts);
+
 export default mermaid;

With that hack applied I now see ELK layout properly:

[nanoant]

@abnerlee Is there are a chance you restore ELK layout in Mermaid, that is now gone with recent updates? I see 1.10.3-dev has Mermaid 11.4 but not ELK. Mermaid default layout engine is horrible for large graphs. Please see instructions below how to obtain mermaid.min.js with ELK included.