From 569fca5d1ae82c29f31af0801cb8d2638adb0870 Mon Sep 17 00:00:00 2001
From: Anthony Fu <anthonyfu117@hotmail.com>
Date: Sun, 22 Aug 2021 21:13:13 +0800
Subject: [PATCH] fix: macros without variables

---
 src/core/macros.ts                        |  8 ++++++--
 test/__snapshots__/transform.test.ts.snap | 20 ++++++++++++++++++++
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/src/core/macros.ts b/src/core/macros.ts
index f2e9b60..4c13003 100644
--- a/src/core/macros.ts
+++ b/src/core/macros.ts
@@ -241,7 +241,11 @@ export function applyMacros(nodes: Statement[]) {
   }
 
   nodes = nodes
-    .map((node) => {
+    .map((raw: Node) => {
+      let node = raw
+      if (raw.type === 'ExpressionStatement')
+        node = raw.expression
+
       if (node.type === 'VariableDeclaration' && !node.declare) {
         const total = node.declarations.length
         for (let i = 0; i < total; i++) {
@@ -258,7 +262,7 @@ export function applyMacros(nodes: Statement[]) {
       if (processDefineEmits(node) || processDefineProps(node) || processDefineExpose(node))
         return null
 
-      return node
+      return raw
     })
     .filter(Boolean) as Statement[]
 
diff --git a/test/__snapshots__/transform.test.ts.snap b/test/__snapshots__/transform.test.ts.snap
index 96a941b..1dbf419 100644
--- a/test/__snapshots__/transform.test.ts.snap
+++ b/test/__snapshots__/transform.test.ts.snap
@@ -47,6 +47,26 @@ export default __sfc_main;
 "
 `;
 
+exports[`transform fixture MacrosPure.vue 1`] = `
+"<template>
+  <div>{{ msg }}</div>
+</template>
+
+<script >
+const __sfc_main = {};
+__sfc_main.props = {
+  msg: String
+};
+
+__sfc_main.setup = (__props, __ctx) => {
+  return {};
+};
+
+export default __sfc_main;
+</script>
+"
+`;
+
 exports[`transform fixture MacrosType.vue 1`] = `
 "<template>
   <div @click=\\"emit(props.msg)\\">{{ msg }}</div>