Fix rendering flowchart open links with arrows

.changeset/spotty-vans-move.md

@@ -0,0 +1,5 @@
+---
+'mermaid': patch
+---
+
+fix: Fix rendering flowchart open links with arrows

packages/mermaid/src/diagrams/flowchart/flowDb.spec.ts

@@ -65,3 +65,17 @@ describe('flow db addClass', () => {
     expect(classes.get('a')?.styles).toEqual(['stroke-width: 8px']);
   });
 });
+
+describe('flow db getData', () => {
+  beforeEach(() => {
+    flowDb.clear();
+  });
+
+  it('should support arrow_open as an edge end arrow type', () => {
+    flowDb.addVertex('A', { text: 'A', type: 'text' }, undefined, [], [], '', undefined, undefined);
+    flowDb.addVertex('B', { text: 'B', type: 'text' }, undefined, [], [], '', undefined, undefined);
+    flowDb.addLink(['A'], ['B'], { type: 'arrow_open' });
+    const data = flowDb.getData();
+    expect(data.edges[0].arrowTypeEnd).toEqual('arrow_open');
+  });
+});

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

@@ -860,6 +860,7 @@ const destructEdgeType = (type: string | undefined) => {
   let arrowTypeStart = 'none';
   let arrowTypeEnd = 'arrow_point';
   switch (type) {
+    case 'arrow_open':
     case 'arrow_point':
     case 'arrow_circle':
     case 'arrow_cross':