fix: trailing commas with key

packages/autofmt/src/element.rs

@@ -84,7 +84,7 @@ impl Buffer {
 
                 self.write_attributes(attributes, key, true)?;
 
-                if !children.is_empty() && !attributes.is_empty() {
+                if !children.is_empty() && (!attributes.is_empty() || key.is_some()) {
                     write!(self.buf, ", ")?;
                 }
 
@@ -104,7 +104,7 @@ impl Buffer {
                 }
                 self.write_attributes(attributes, key, true)?;
 
-                if !children.is_empty() && !attributes.is_empty() {
+                if !children.is_empty() && (!attributes.is_empty() || key.is_some()) {
                     write!(self.buf, ",")?;
                 }
 
@@ -117,7 +117,7 @@ impl Buffer {
             ShortOptimization::NoOpt => {
                 self.write_attributes(attributes, key, false)?;
 
-                if !children.is_empty() && !attributes.is_empty() {
+                if !children.is_empty() && (!attributes.is_empty() || key.is_some()) {
                     write!(self.buf, ",")?;
                 }
 
@@ -282,9 +282,10 @@ impl Buffer {
 
                 if attr_len > 80 {
                     None
+                } else if comp.children.is_empty() {
+                    Some(attr_len)
                 } else {
-                    self.is_short_children(&comp.children)
+                    None
-                        .map(|child_len| child_len + attr_len)
                 }
             }
             [BodyNode::RawExpr(ref expr)] => {

packages/autofmt/tests/samples.rs

@@ -25,3 +25,5 @@ twoway! ("tiny" => tiny);
 twoway! ("tinynoopt" => tinynoopt);
 
 twoway! ("long" => long);
+
+twoway! ("key" => key);

packages/autofmt/tests/samples/key.rsx

@@ -0,0 +1,9 @@
+rsx! {
+    li { key: "{link}",
+        Link { class: "py-1 px-2 {hover} {hover_bg}", to: "{link}", "{name}" }
+    }
+
+    li { key: "{link}", asd: "asd",
+        Link { class: "py-1 px-2 {hover} {hover_bg}", to: "{link}", "{name}" }
+    }
+}