fix(mp): dynamic scoped slot

packages/uni-mp-compiler/__tests__/slot.spec.ts

@@ -23,6 +23,13 @@ describe('compiler: transform slot', () => {
       `<button><slot name="{{a}}"/></button>`,
       `(_ctx, _cache) => {
   return { a: _d(_ctx.name) }
+}`
+    )
+    assert(
+      `<button><slot :name="'title'+index" :content="{name:'name1'}"></slot></button>`,
+      `<button><slot name="{{a}}"></slot></button>`,
+      `(_ctx, _cache) => {
+  return { a: _d('title' + _ctx.index), b: _r(_d('title' + _ctx.index), { content: { name: 'name1' } }) }
 }`
     )
   })

packages/uni-mp-compiler/src/transforms/transformSlot.ts

@@ -53,15 +53,12 @@ export function rewriteSlot(node: SlotOutletNode, context: TransformContext) {
       }
       if (p.name === 'bind' && isStaticArgOf(p.arg, 'name')) {
         if (p.exp) {
-          p.exp = rewriteExpression(
-            createCompoundExpression([
-              context.helperString(DYNAMIC_SLOT) + '(',
-              p.exp,
-              ')',
-            ]),
-            context
-          )
-          slotName = p.exp
+          slotName = createCompoundExpression([
+            context.helperString(DYNAMIC_SLOT) + '(',
+            p.exp,
+            ')',
+          ])
+          p.exp = rewriteExpression(slotName, context)
         }
       } else {
         if (p.name === 'bind' && p.arg && isStaticExp(p.arg)) {