fix(compiler-sfc): add new line after defineProps

packages/compiler-sfc/__tests__/__snapshots__/compileScript.spec.ts.snap

@@ -392,6 +392,7 @@ export default {
   expose()
 
 const props = __props
+
 
 
 return { props, propsModel }
@@ -410,6 +411,7 @@ exports[`SFC compile <script setup> defineProps() 1`] = `
 
 const props = __props
 
+
 const bar = 1
 
 return { props, bar }
@@ -426,6 +428,7 @@ exports[`SFC compile <script setup> defineProps/defineEmits in multi-variable de
   expose()
 
 const props = __props
+
 
 
 return { props, emit }
@@ -442,6 +445,7 @@ exports[`SFC compile <script setup> defineProps/defineEmits in multi-variable de
   expose()
 
 const props = __props
+
     const a = 1;
 
 return { props, a, emit }
@@ -589,6 +593,24 @@ return { bar }
 }"
 `;
 
+exports[`SFC compile <script setup> import without new line at top of setup script + defineProps  1`] = `
+"const props = __props
+import { ref } from 'vue'
+
+export default {
+  props: {
+  foo: String
+},
+  setup(__props, { expose }) {
+  expose()
+
+
+return { props, ref }
+}
+
+}"
+`;
+
 exports[`SFC compile <script setup> imports dedupe between user & helper 1`] = `
 "import { ref as _ref } from 'vue'
 import { ref } from 'vue'
@@ -1286,6 +1308,7 @@ const props = __props
 
 
 
+
 return { props, emit }
 }
 
@@ -1341,6 +1364,7 @@ const props = __props as {
         bar?: number
         baz: boolean
       }
+
 
 
 return { props, defaults }
@@ -1363,6 +1387,7 @@ export default /*#__PURE__*/_defineComponent({
   expose()
 
 const props = __props as { foo: string, bar?: number, baz: boolean, qux(): number }
+
 
 
 return { props }

packages/compiler-sfc/__tests__/compileScript.spec.ts

@@ -84,6 +84,18 @@ const bar = 1
 },`)
   })
 
+  test('import without new line at top of setup script + defineProps ', () => {
+    const { content } = compile(`
+<script setup>import { ref } from 'vue'
+const props = defineProps({
+  foo: String
+})
+</script>
+  `)
+    // should generate working code
+    assertCode(content)
+  })
+
   test('defineProps w/ external definition', () => {
     const { content } = compile(`
     <script setup>

packages/compiler-sfc/src/compileScript.ts

@@ -1214,7 +1214,7 @@ export function compileScript(
       startOffset,
       `\nconst ${propsIdentifier} = __props${
         propsTypeDecl ? ` as ${genSetupPropsType(propsTypeDecl)}` : ``
-      }`
+      }\n`
     )
   }
   if (propsDestructureRestId) {