fix: declaraion without initialization statement, close #46

Author: antfu

src/core/transformScriptSetup.ts

@@ -11,8 +11,7 @@ function isAsyncImport(node: any) {
   if (node.type === 'VariableDeclaration') {
     const declaration = node.declarations[0]
 
-    return declaration.init.callee != null
-      && declaration.init.callee.name === 'defineAsyncComponent'
+    return declaration?.init?.callee?.name === 'defineAsyncComponent'
   }
 
   return false

test/__snapshots__/transform.test.ts.snap

@@ -509,6 +509,7 @@ exports[`transform fixtures test/fixtures/RefSugar.vue 1`] = `
   <div>
     {{ msg }}
     {{ msg2 }}
+    {{ a }}
   </div>
 </template>
 
@@ -534,8 +535,11 @@ const __sfc_main = defineComponent({
 __sfc_main.setup = (__props, __ctx) => {
   let msg2 = _ref('hello world');
 
+  let a: number;
+  a = 2;
   return {
-    msg2
+    msg2,
+    a
   };
 };
 

test/fixtures/RefSugar.vue

@@ -2,6 +2,7 @@
   <div>
     {{ msg }}
     {{ msg2 }}
+    {{ a }}
   </div>
 </template>
 
@@ -23,4 +24,8 @@ export default defineComponent({
 
 <script setup lang="ts">
 let msg2 = $ref('hello world')
+
+let a: number
+
+a = 2
 </script>