fix: Display no arrows for open links

.changeset/six-tigers-clap.md

@@ -0,0 +1,5 @@
+---
+'mermaid': patch
+---
+
+Display no arrows for open links

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

@@ -65,3 +65,36 @@ describe('flow db addClass', () => {
     expect(classes.get('a')?.styles).toEqual(['stroke-width: 8px']);
   });
 });
+
+describe('flow db getData', () => {
+  beforeEach(() => {
+    flowDb.clear();
+  });
+  it('should end in point for for single directional arrows', () => {
+    flowDb.addLink(['A'], ['B'], { type: 'arrow_point' });
+
+    const { edges } = flowDb.getData();
+
+    expect(edges.length).toBe(1);
+    expect(edges[0].arrowTypeStart).toBe('none');
+    expect(edges[0].arrowTypeEnd).toBe('arrow_point');
+  });
+  it('should start and end in points for multi directional arrows', () => {
+    flowDb.addLink(['A'], ['B'], { type: 'double_arrow_point' });
+
+    const { edges } = flowDb.getData();
+
+    expect(edges.length).toBe(1);
+    expect(edges[0].arrowTypeStart).toBe('arrow_point');
+    expect(edges[0].arrowTypeEnd).toBe('arrow_point');
+  });
+  it('should have no points for open arrows', () => {
+    flowDb.addLink(['A'], ['B'], { type: 'arrow_open' });
+
+    const { edges } = flowDb.getData();
+
+    expect(edges.length).toBe(1);
+    expect(edges[0].arrowTypeStart).toBe('none');
+    expect(edges[0].arrowTypeEnd).toBe('none');
+  });
+});

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

@@ -872,6 +872,9 @@ const destructEdgeType = (type: string | undefined) => {
       arrowTypeStart = type.replace('double_', '');
       arrowTypeEnd = arrowTypeStart;
       break;
+    case 'arrow_open':
+      arrowTypeEnd = 'none';
+      break;
   }
   return { arrowTypeStart, arrowTypeEnd };
 };