初始化项目，自 v1.7.1 版本开始

src/utils/tsxHelper.ts

@@ -0,0 +1,16 @@
+import { Slots } from 'vue'
+import { isFunction } from '@/utils/is'
+
+export const getSlot = (slots: Slots, slot = 'default', data?: Recordable) => {
+  // Reflect.has 判断一个对象是否存在某个属性
+  if (!slots || !Reflect.has(slots, slot)) {
+    return null
+  }
+  if (!isFunction(slots[slot])) {
+    console.error(`${slot} is not a function!`)
+    return null
+  }
+  const slotFn = slots[slot]
+  if (!slotFn) return null
+  return slotFn(data)
+}