fix(mp): mini program component with default slot

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

@@ -115,8 +115,8 @@ describe('compiler: transform component', () => {
       },
     })
     assert(
-      `<van-button/>`,
-      `<van-button u-t="m" u-i="dc555fe4-0" bind:__l="__l"/>`,
+      `<van-button><template #default><view/></template><template #head><view/></template></van-button>`,
+      `<van-button u-t="m" u-i="dc555fe4-0" bind:__l="__l"><view/><view slot="head"/></van-button>`,
       `(_ctx, _cache) => {
   return {}
 }`,

packages/uni-mp-compiler/__tests__/test.ts

@@ -60,7 +60,7 @@ addMiniProgramPageJson(filename, {
   },
 })
 assert(
-  `<van-button/>`,
+  `<van-button><template #default><view/></template></van-button>`,
   `<van-button u-i="dc555fe4-0"/>`,
   `(_ctx, _cache) => {
 return {}

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

@@ -51,11 +51,12 @@ export const transformSlot: NodeTransform = (node, context) => {
   if (!isUserComponent(node, context as any)) {
     return
   }
-  const { children } = node
+
+  const { tag, children } = node
   const slots = new Set<string | ExpressionNode>()
   const onComponentSlot = findDir(node, 'slot', true)
   const implicitDefaultChildren: TemplateChildNode[] = []
-
+  const isMiniProgramComponent = context.isMiniProgramComponent(tag)
   for (let i = 0; i < children.length; i++) {
     const slotElement = children[i]
     let slotDir: DirectiveNode | undefined
@@ -83,6 +84,15 @@ export const transformSlot: NodeTransform = (node, context) => {
       node,
       context
     )
+
+    // 小程序组件默认插槽，直接移除<template #default>节点
+    if (isMiniProgramComponent) {
+      if (slotName === 'default' && slotElement.children.length === 1) {
+        children.splice(i, 1, slotElement.children[0])
+      }
+      continue
+    }
+
     if (slotName) {
       slots.add(slotName)
     }