I took over this vue project and want to migrate it to Vue 3. I followed the steps in this guide https://v3-migration.vuejs.org/migration-build.html and was now on the step to migrate vue-router from v3 to v4. After implementing the necessary changes according to https://router.vuejs.org/guide/migration/ I am getting a blank page. It was working before this migration, the only changes I've made were to main.js and router/index.js. But I can't 100% rule out the error lying elsewhere.
I am getting no errors in console except a deprecation WATCH_ARRAY warning from the compat on the router. But as far as I can see, that is expected behaviour https://github.com/vuejs/router/issues/1315 I have tried many different solutions from others having a similar issue, but nothing worked so far.
dependencies
"dependencies": {
"babel-polyfill": "^6.26.0",
"@vue/compat": "^3.2.6",
"axios": "^1.5.0",
"currency-formatter": "^1.5.5",
"fuse.js": "^6.6.2",
"isomorphic-fetch": "^3.0.0",
"localforage": "^1.10.0",
"lodash-es": "^4.17.21",
"moment": "^2.29.4",
"qs": "^6.11.2",
"vue": "^3.2.6",
"vue-router": "^4.2.4",
"vuex": "^4.1.0",
"window-or-global": "^1.0.1"
},
"devDependencies": {
"acorn": "^8.10.0",
"@babel/core": "^7.22.10",
"@babel/eslint-parser": "^7.22.10",
"@babel/runtime": "7.22.10",
"@babel/runtime-corejs2": "7.22.10",
"@babel/plugin-proposal-class-properties": "^7.0.0",
"@babel/plugin-proposal-decorators": "^7.0.0",
"@babel/plugin-proposal-export-namespace-from": "^7.0.0",
"@babel/plugin-proposal-function-sent": "^7.0.0",
"@babel/plugin-proposal-json-strings": "^7.0.0",
"@babel/plugin-proposal-numeric-separator": "^7.0.0",
"@babel/plugin-proposal-throw-expressions": "^7.0.0",
"@babel/plugin-syntax-dynamic-import": "^7.0.0",
"@babel/plugin-syntax-import-meta": "^7.0.0",
"babel-plugin-syntax-jsx": "^6.18.0",
"@babel/plugin-transform-runtime": "^7.0.0",
"@babel/preset-env": "^7.0.0",
"@openapitools/openapi-generator-cli": "2.7.0",
"@vue/compiler-sfc": "^3.2.6",
"autoprefixer": "^7.1.2",
"babel-loader": "^8.3.0",
"babel-plugin-istanbul": "^4.1.1",
"babel-plugin-transform-vue-jsx": "^3.5.0",
"chai": "^4.3.8",
"chalk": "^5.3.0",
"copy-webpack-plugin": "^5.1.2",
"cross-env": "^7.0.3",
"css-loader": "^3.6.0",
"eslint": "^8.47.0",
"eslint-config-standard": "^17.1.0",
"eslint-friendly-formatter": "^4.0.1",
"eslint-plugin-import": "^2.28.0",
"eslint-plugin-n": "16.0.1",
"eslint-plugin-node": "^11.1.0",
"eslint-plugin-promise": "^6.1.1",
"eslint-plugin-standard": "^3.0.1",
"eslint-plugin-vue": "^9.17.0",
"eslint-webpack-plugin": "^2.2.1",
"extract-text-webpack-plugin": "^3.0.0",
"file-loader": "^1.1.4",
"friendly-errors-webpack-plugin": "^1.7.0",
"html-webpack-plugin": "^4.5.2",
"inject-loader": "^4.0.1",
"karma": "^6.4.2",
"karma-coverage": "^2.2.1",
"karma-mocha": "^2.0.1",
"karma-phantomjs-launcher": "^1.0.2",
"karma-phantomjs-shim": "^1.4.0",
"karma-sinon-chai": "^2.0.2",
"karma-sourcemap-loader": "^0.4.0",
"karma-spec-reporter": "0.0.36",
"karma-webpack": "^4.0.2",
"mocha": "^10.2.0",
"node-notifier": "^10.0.1",
"node-sass": "^4.13.1",
"optimize-css-assets-webpack-plugin": "^3.2.1",
"ora": "^5.4.1",
"phantomjs-prebuilt": "^2.1.14",
"portfinder": "^1.0.32",
"postcss-import": "^11.0.0",
"postcss-loader": "^2.0.8",
"postcss-url": "^7.2.1",
"rimraf": "^3.0.2",
"sass-loader": "^7.3.1",
"semver": "^7.5.4",
"shelljs": "^0.8.5",
"sinon": "^15.2.0",
"sinon-chai": "^3.7.0",
"uglifyjs-webpack-plugin": "^2.2.0",
"url-loader": "^4.1.1",
"vue-loader": "^16.8.3",
"vue-style-loader": "^4.1.3",
"webpack": "^4.46.0",
"webpack-bundle-analyzer": "^2.9.0",
"webpack-cli": "4.10.0",
"webpack-dev-server": "^4.15.1",
"webpack-merge": "^4.2.2"
},
main.js
import 'babel-polyfill'
import { createApp } from 'vue'
import { router } from './router'
import root from 'window-or-global'
import AppWrapper from './components/AppWrapper.vue'
import { store } from './store'
import './assets/css/font-awesome.css'
const appWrapper = createApp(AppWrapper)
appWrapper.use(store)
appWrapper.use(router)
root.$router = router
root.$store = store
appWrapper.config.lang = 'de'
appWrapper.mount('#appWrapper')
router/index.js
import { createRouter, createWebHistory } from 'vue-router'
import InventoryPage from '../components/pages/InventoryPage'
export const router = createRouter({
history: createWebHistory(process.env.BASEPATH),
routes: [
{
path: '/',
name: 'StartPage',
redirect: {
name: 'Inventory'
}
},
{
path: '/inventory',
name: 'Inventory',
component: InventoryPage
},
{
path: '/:pathMatch(.*)*',
redirect: '/'
}
]
})
So, after setting up a smaller project and tinkering around with that, I have found the problem:
For some reason the vue-router did not work with the vue compat mode. After removing compat from the project and letting it run directly on vue 3 everything was working as expected. It might have been that I did something wrong with configuring the compat mode though.