Add support for formatting spread attributes (#320)

* feat(embed): Add support for formatting spread attributes

* test(embed): Add test for formatting spread attributes

* chore: changeset

.changeset/wet-needles-cheer.md

@@ -0,0 +1,5 @@
+---
+'prettier-plugin-astro': minor
+---
+
+Add support for formatting spread attributes

src/printer/embed.ts

@@ -93,6 +93,15 @@ export function embed(
 		return [line, name, '=', '{', attrNodeValue, '}'];
 	}
 
+	if (node.type === 'attribute' && node.kind === 'spread') {
+		const spreadContent = wrapParserTryCatch(textToDoc, forceIntoExpression(node.name), {
+			...opts,
+			parser: expressionParser,
+		});
+
+		return [line, '{...', spreadContent, '}'];
+	}
+
 	// Frontmatter
 	if (node.type === 'frontmatter') {
 		const frontmatterContent = wrapParserTryCatch(textToDoc, node.value, {

test/fixtures/other/spread-attributes/input.astro

@@ -0,0 +1,5 @@
+<div {...{datatype:      ""}}></div>
+
+<div {...myObject}></div>
+
+<div {...get({ thing: 'hey'})}></div>

test/fixtures/other/spread-attributes/output.astro

@@ -0,0 +1,5 @@
+<div {...{ datatype: "" }}></div>
+
+<div {...myObject}></div>
+
+<div {...get({ thing: "hey" })}></div>

test/tests/other.test.ts

@@ -111,3 +111,5 @@ test(
 );
 
 test('Can ignore self-closing elements', files, 'other/ignore-self-close');
+
+test('can format spread attributes', files, 'other/spread-attributes');