refactor: simplify suspense ssr + adjust behavior

packages/compiler-ssr/__tests__/ssrSuspense.spec.ts

@@ -9,12 +9,12 @@ describe('ssr compile: suspense', () => {
       return function ssrRender(_ctx, _push, _parent) {
         const _component_foo = _resolveComponent(\\"foo\\")
 
-        _push(_ssrRenderSuspense({
-          default: (_push) => {
+        _ssrRenderSuspense(_push, {
+          default: () => {
             _push(_ssrRenderComponent(_component_foo, null, null, _parent))
           },
           _: 1
-        }))
+        })
       }"
     `)
   })
@@ -36,15 +36,15 @@ describe('ssr compile: suspense', () => {
       return function ssrRender(_ctx, _push, _parent) {
         const _component_foo = _resolveComponent(\\"foo\\")
 
-        _push(_ssrRenderSuspense({
-          default: (_push) => {
+        _ssrRenderSuspense(_push, {
+          default: () => {
             _push(_ssrRenderComponent(_component_foo, null, null, _parent))
           },
-          fallback: (_push) => {
+          fallback: () => {
             _push(\` loading... \`)
           },
           _: 1
-        }))
+        })
       }"
     `)
   })

packages/compiler-ssr/src/transforms/ssrTransformSuspense.ts

@@ -38,7 +38,7 @@ export function ssrTransformSuspense(
       wipMap.set(node, wipEntry)
       wipEntry.slotsExp = buildSlots(node, context, (_props, children, loc) => {
         const fn = createFunctionExpression(
-          [`_push`],
+          [],
           undefined, // no return, assign body later
           true, // newline
           false, // suspense slots are not treated as normal slots
@@ -71,8 +71,9 @@ export function ssrProcessSuspense(
   }
   // _push(ssrRenderSuspense(slots))
   context.pushStatement(
-    createCallExpression(`_push`, [
-      createCallExpression(context.helper(SSR_RENDER_SUSPENSE), [slotsExp])
+    createCallExpression(context.helper(SSR_RENDER_SUSPENSE), [
+      `_push`,
+      slotsExp
     ])
   )
 }