feat(errors): NavigationDuplicated name for backwards compatibility

Author: posva

src/history/abstract.js

@@ -3,7 +3,7 @@
 import type Router from '../index'
 import { History } from './base'
 import { isRouterError } from '../util/warn'
-import { NavigationFailureType } from './errors'
+import { NavigationFailureType } from '../util/errors'
 
 export class AbstractHistory extends History {
   index: number

src/history/base.js

@@ -16,7 +16,7 @@ import {
   createNavigationCancelledError,
   createNavigationRedirectedError,
   createNavigationAbortedError
-} from './errors'
+} from '../util/errors'
 
 export class History {
   router: Router

src/history/errors.js renamed to src/util/errors.js

@@ -17,12 +17,15 @@ export function createNavigationRedirectedError (from, to) {
 }
 
 export function createNavigationDuplicatedError (from, to) {
-  return createRouterError(
+  const error = createRouterError(
     from,
     to,
     NavigationFailureType.duplicated,
     `Avoided redundant navigation to current location: "${from.fullPath}".`
   )
+  // backwards compatible with the first introduction of Errors
+  error.name = 'NavigationDuplicated'
+  return error
 }
 
 export function createNavigationCancelledError (from, to) {