From 978d029dab7a86f68d4d6a3ff4af8698a8f76985 Mon Sep 17 00:00:00 2001
From: Andreas Hell <andhell03@gmail.com>
Date: Sat, 6 Apr 2024 22:31:50 +0200
Subject: [PATCH] Fixed webworker startup bc elkjs hidden dependency

---
 .gitignore                                    | 2 ++
 examples/workflow-server-bundled/package.json | 2 +-
 packages/layout-elk/src/di.config.ts          | 6 +++++-
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/.gitignore b/.gitignore
index 8bf753c..be44adc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,3 +16,5 @@ report.xml
 
 wf-glsp-server-node.js
 wf-glsp-server-node.js.map
+wf-glsp-server-webworker.js
+wf-glsp-server-webworker.js.map
\ No newline at end of file
diff --git a/examples/workflow-server-bundled/package.json b/examples/workflow-server-bundled/package.json
index 10a213e..e291068 100644
--- a/examples/workflow-server-bundled/package.json
+++ b/examples/workflow-server-bundled/package.json
@@ -41,7 +41,7 @@
     "wf-glsp-server-node.js.map"
   ],
   "scripts": {
-    "clean": "rimraf wf-glsp-server-node.js wf-glsp-server-node.js.map",
+    "clean": "rimraf wf-glsp-server-node.js wf-glsp-server-node.js.map wf-glsp-server-webworker.js wf-glsp-server-webworker.js.map",
     "start": "node --enable-source-maps ./wf-glsp-server-node.js --port 5007",
     "start:websocket": "node --enable-source-maps ./wf-glsp-server-node.js -w --port 8081",
     "watch": "tsc -w"
diff --git a/packages/layout-elk/src/di.config.ts b/packages/layout-elk/src/di.config.ts
index 41954b4..24fbcdb 100644
--- a/packages/layout-elk/src/di.config.ts
+++ b/packages/layout-elk/src/di.config.ts
@@ -82,7 +82,11 @@ export function configureELKLayoutModule(options: ElkModuleOptions): ContainerMo
         const elkFactory: ElkFactory = () =>
             new ElkConstructor({
                 algorithms: options.algorithms,
-                defaultLayoutOptions: options.defaultLayoutOptions
+                defaultLayoutOptions: options.defaultLayoutOptions,
+                // The node implementation relied on elkjs' `FakeWorker` to set the `workerFactory`.
+                // However, since the required file is dynamically loaded and not available in a web-worker context,
+                // it needs to be mocked manually.
+                workerFactory: () => ({ postMessage: () => {} }) as unknown as Worker
             });
 
         bind(ElkFactory).toConstantValue(elkFactory);