fix(guards): remove registered update guards after leaving

__tests__/guards/onBeforeRouteUpdate.spec.ts

@@ -52,4 +52,47 @@ describe('onBeforeRouteUpdate', () => {
     await router.push('/foo?q')
     expect(spy).toHaveBeenCalledTimes(1)
   })
+
+  it('removes update guards when leaving', async () => {
+    expect.assertions(3)
+    const spy = jest
+      .fn()
+      .mockImplementation(function (this: any, to, from, next) {
+        expect(typeof this.counter).toBe('number')
+        next()
+      })
+    const WithLeave = defineComponent({
+      template: `text`,
+      // we use data to check if the context is the right one because saving `this` in a variable logs a few warnings
+      data: () => ({ counter: 0 }),
+      setup() {
+        onBeforeRouteUpdate(spy)
+      },
+    })
+
+    const router = createRouter({
+      history: createMemoryHistory(),
+      routes: [
+        { path: '/', component },
+        { path: '/foo', component: WithLeave as any },
+      ],
+    })
+    const app = createApp({
+      template: `
+      <router-view />
+      `,
+    })
+    app.use(router)
+    const rootEl = document.createElement('div')
+    document.body.appendChild(rootEl)
+    app.mount(rootEl)
+
+    await router.isReady()
+    await router.push('/foo')
+    await router.push('/foo?q')
+    await router.push('/')
+    await router.push('/foo')
+    await router.push('/foo?q')
+    expect(spy).toHaveBeenCalledTimes(2)
+  })
 })

src/navigationGuards.ts

@@ -260,16 +260,3 @@ function isRouteComponent(
     '__vccOpts' in component
   )
 }
-
-/**
- * 1. beforeRouteEnter callbacks
- * 2. Dictionary of instances per view name
- */
-export type GuardManagerEntry = [
-  NavigationGuardNextCallback[],
-  Record<string, ComponentPublicInstance | undefined | null>
-]
-
-export function createGuardManager() {
-  return new Map<RouteRecordNormalized, GuardManagerEntry>()
-}

src/router.ts

@@ -691,6 +691,7 @@ export function createRouter(options: RouterOptions): Router {
     for (const record of leavingRecords) {
       // remove registered guards from removed matched records
       record.leaveGuards = []
+      record.updateGuards = []
       // free the references
       record.instances = {}
       record.enterCallbacks = {}