refactor(breadcrumb): refactor the type definition of breadcrumb (#2443)

* refactor(breadcrumb): refactor the type definition of breadcrumb

* chore(breadcrumb): fix types import

packages/breadcrumb/src/breadcrumb.ts

@@ -0,0 +1,4 @@
+export interface IBreadcrumbProps {
+  separator: string
+  separatorClass: string
+}

packages/breadcrumb/src/index.vue

@@ -11,11 +11,7 @@
 
 <script lang="ts">
 import { defineComponent, provide, ref, onMounted } from 'vue'
-
-interface IBreadcrumbProps {
-  separator: string
-  separatorClass: string
-}
+import type { IBreadcrumbProps } from './breadcrumb'
 
 export default defineComponent({
   name: 'ElBreadcrumb',
@@ -29,10 +25,10 @@ export default defineComponent({
       default: '',
     },
   },
-  setup(props: IBreadcrumbProps) {
+  setup(props) {
     const breadcrumb = ref(null)
 
-    provide('breadcrumb', props)
+    provide<IBreadcrumbProps>('breadcrumb', props)
 
     onMounted(() => {
       const items = breadcrumb.value.querySelectorAll('.el-breadcrumb__item')

packages/breadcrumb/src/item.vue

@@ -26,22 +26,14 @@ import {
   onMounted,
   getCurrentInstance,
 } from 'vue'
-
-interface IBreadcrumbInject {
-  separator: string
-  separatorClass: string
-}
-
-interface IBreadcrumbItemProps {
-  to: string | Record<string, unknown>
-  replace: boolean
-}
+import type { IBreadcrumbProps } from './breadcrumb'
+import type { PropType } from 'vue'
 
 export default defineComponent({
   name: 'ElBreadcrumbItem',
   props: {
     to: {
-      type: [String, Object],
+      type: [String, Object] as PropType<string | Record<string, unknown>>,
       default: '',
     },
     replace: {
@@ -49,9 +41,9 @@ export default defineComponent({
       default: false,
     },
   },
-  setup(props: IBreadcrumbItemProps) {
+  setup(props) {
     const link = ref(null)
-    const parent: IBreadcrumbInject = inject('breadcrumb')
+    const parent = inject<IBreadcrumbProps>('breadcrumb')
     const instance = getCurrentInstance()
     const router = instance.appContext.config.globalProperties.$router