feat .calude

.claude/skills/uni-helper/references/plugin-middleware.md

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+---
+name: vite-plugin-uni-middleware
+description: Route middleware support for uni-app - implement guards, auth, and page lifecycle hooks
+---
+
+# vite-plugin-uni-middleware
+
+Add Express-style middleware support to uni-app routing. Implement authentication guards, page analytics, and custom route logic.
+
+## Installation
+
+```bash
+npm i -D @uni-helper/vite-plugin-uni-middleware
+```
+
+## Setup
+
+```ts
+// vite.config.ts
+import Uni from '@dcloudio/vite-plugin-uni'
+import UniMiddleware from '@uni-helper/vite-plugin-uni-middleware'
+import { defineConfig } from 'vite'
+
+export default defineConfig({
+  plugins: [UniMiddleware(), Uni()],
+})
+```
+
+## Creating Middleware
+
+Create middleware files in `src/middleware/` directory:
+
+```ts
+// src/middleware/auth.ts
+import { defineMiddleware } from '@uni-helper/vite-plugin-middleware'
+
+export default defineMiddleware((to, from, next) => {
+  const token = uni.getStorageSync('token')
+
+  if (!token && to.path !== '/pages/login/index') {
+    // Redirect to login
+    next('/pages/login/index')
+  } else {
+    // Continue navigation
+    next()
+  }
+})
+```
+
+```ts
+// src/middleware/analytics.ts
+export default defineMiddleware((to, from, next) => {
+  // Track page view
+  uni.report('page_view', {
+    path: to.path,
+    from: from.path,
+    timestamp: Date.now(),
+  })
+
+  next()
+})
+```
+
+```ts
+// src/middleware/logger.ts
+export default defineMiddleware((to, from, next) => {
+  console.log(`[Router] ${from.path} -> ${to.path}`)
+  next()
+})
+```
+
+## Applying Middleware
+
+### Via definePage (recommended)
+
+```vue
+<script setup>
+definePage({
+  middlewares: ['auth', 'analytics'],
+})
+</script>
+```
+
+### Via pages.json
+
+```json
+{
+  "pages": [{
+    "path": "pages/profile/index",
+    "middlewares": ["auth"]
+  }]
+}
+```
+
+### Global Middleware
+
+Create `src/middleware/index.ts` for global middleware:
+
+```ts
+// src/middleware/index.ts
+export default defineMiddleware((to, from, next) => {
+  // Runs on every navigation
+  console.log('Global middleware')
+  next()
+})
+```
+
+## Middleware Context
+
+```ts
+interface MiddlewareContext {
+  to: {
+    path: string
+    query: Record<string, string>
+    meta?: Record<string, any>
+  }
+  from: {
+    path: string
+    query: Record<string, string>
+  }
+  next: (path?: string) => void
+}
+```
+
+## Middleware Order
+
+Middleware executes in declaration order:
+
+```vue
+<script setup>
+definePage({
+  // Runs: logger -> auth -> analytics
+  middlewares: ['logger', 'auth', 'analytics'],
+})
+</script>
+```
+
+## Navigation Control
+
+```ts
+export default defineMiddleware((to, from, next) => {
+  // Continue to route
+  next()
+
+  // Redirect to different route
+  next('/pages/other/index')
+
+  // Redirect with query
+  next({
+    path: '/pages/login/index',
+    query: { redirect: to.path },
+  })
+
+  // Cancel navigation (stay on current page)
+  next(false)
+})
+```
+
+## Async Middleware
+
+```ts
+export default defineMiddleware(async (to, from, next) => {
+  try {
+    const user = await fetchUserInfo()
+
+    if (user.isBanned) {
+      next('/pages/banned/index')
+    } else {
+      next()
+    }
+  } catch (error) {
+    next('/pages/error/index')
+  }
+})
+```
+
+<!--
+Source references:
+- https://github.com/uni-helper/vite-plugin-uni-middleware
+- https://uni-helper.js.org/vite-plugin-uni-middleware
+-->