fix

d2compiler/compile_test.go

@@ -1364,8 +1364,8 @@ x -> y: {
 				if len(g.Objects) != 1 {
 					t.Fatal(g.Objects)
 				}
-				if g.Objects[0].Attributes.Link != "https://google.com" {
-					t.Fatal(g.Objects[0].Attributes.Link)
+				if g.Objects[0].Attributes.Link.Value != "https://google.com" {
+					t.Fatal(g.Objects[0].Attributes.Link.Value)
 				}
 			},
 		},
@@ -1380,8 +1380,8 @@ x -> y: {
 				if len(g.Objects) != 1 {
 					t.Fatal(g.Objects)
 				}
-				if g.Objects[0].Attributes.Link != "Overview.Untitled board 7.zzzzz" {
-					t.Fatal(g.Objects[0].Attributes.Link)
+				if g.Objects[0].Attributes.Link.Value != "Overview.Untitled board 7.zzzzz" {
+					t.Fatal(g.Objects[0].Attributes.Link.Value)
 				}
 			},
 		},

d2exporter/export.go

@@ -152,8 +152,12 @@ func toShape(obj *d2graph.Object, theme *d2themes.Theme) d2target.Shape {
 		}
 	}
 
-	shape.Tooltip = obj.Attributes.Tooltip
-	shape.Link = obj.Attributes.Link
+	if obj.Attributes.Tooltip != nil {
+		shape.Tooltip = obj.Attributes.Tooltip.Value
+	}
+	if obj.Attributes.Link != nil {
+		shape.Link = obj.Attributes.Link.Value
+	}
 	shape.Icon = obj.Attributes.Icon
 	if obj.IconPosition != nil {
 		shape.IconPosition = *obj.IconPosition
@@ -232,7 +236,9 @@ func toConnection(edge *d2graph.Edge, theme *d2themes.Theme) d2target.Connection
 		connection.Animated, _ = strconv.ParseBool(edge.Attributes.Style.Animated.Value)
 	}
 
-	connection.Tooltip = edge.Attributes.Tooltip
+	if edge.Attributes.Tooltip != nil {
+		connection.Tooltip = edge.Attributes.Tooltip.Value
+	}
 	connection.Icon = edge.Attributes.Icon
 
 	if edge.Attributes.Style.Italic != nil {

testdata/d2compiler/TestCompile/path_link.exp.json

@@ -129,7 +129,9 @@
             "value": "x"
           },
           "style": {},
-          "link": "Overview.Untitled board 7.zzzzz",
+          "link": {
+            "value": "Overview.Untitled board 7.zzzzz"
+          },
           "near_key": null,
           "shape": {
             "value": "rectangle"

testdata/d2compiler/TestCompile/url_link.exp.json

@@ -129,7 +129,9 @@
             "value": "x"
           },
           "style": {},
-          "link": "https://google.com",
+          "link": {
+            "value": "https://google.com"
+          },
           "near_key": null,
           "shape": {
             "value": "rectangle"