no goldmark in compile

d2js/js.go

@@ -210,7 +210,9 @@ func jsParse(this js.Value, args []js.Value) interface{} {
 		}
 	}
 
-	m, err := d2parser.Parse("", strings.NewReader(dsl), nil)
+	m, err := d2parser.Parse("", strings.NewReader(dsl), &d2parser.ParseOptions{
+		UTF16Pos: true,
+	})
 	if err != nil {
 		return err
 	}

lib/textmeasure/markdown.go

@@ -1,3 +1,5 @@
+//go:build !wasm
+
 package textmeasure
 
 import (

lib/textmeasure/markdown_js.go

@@ -0,0 +1,13 @@
+//go:build wasm
+
+package textmeasure
+
+import "oss.terrastruct.com/d2/d2renderers/d2fonts"
+
+func MeasureMarkdown(mdText string, ruler *Ruler, fontFamily *d2fonts.FontFamily, fontSize int) (width, height int, err error) {
+	return 0, 0, nil
+}
+
+func RenderMarkdown(m string) (string, error) {
+	return "", nil
+}