Hello - I’m very fresh to vue, so excuse the beginner question, but I’m getting desperate.
I had a project that was created using vue-cli 2.x, and I wanted to upgrade it to use 3.0. I got everything to work, except that now I get an error in the console that there are two imports of vuejs in my app, causing the error [Vue warn]: $attrs is readonly.
.
I see both of them imported (vue.js
, and vue.runtime.esm.js
), as you can see in the screenshot below.
However, in main.js, I only import one (`import Vue from ‘vue’) . My index.html does not contain any references to import vue from a CDN.
Changing the import in main.js
to import Vue from 'vue/dist/vue.esm.js'
resolves the conflict, but the I get this error:
Here’s what my package.json looks like
{
"name": "pom-frontend",
"version": "0.1.0",
"private": true,
"scripts": {
"serve": "vue-cli-service serve",
"build": "vue-cli-service build",
"lint": "vue-cli-service lint"
},
"dependencies": {
"axios": "^0.18.0",
"bootstrap-vue": "^2.0.0-rc.8",
"eslint-plugin-html": "^4.0.3",
"jquery": "^3.3.1",
"leaflet.icon.glyph": "^0.2.0",
"nprogress": "^0.2.0",
"schema-utils": "^0.4.5",
"vue": "^2.5.16",
"vue-analytics": "^5.10.6",
"vue-router": "^3.0.1",
"vue-select": "^2.4.0",
"vue2-autocomplete-js": "^0.2.2",
"vue2-leaflet": "^1.0.2"
},
"devDependencies": {
"@vue/cli": "^3.0.0-rc.3",
"@vue/cli-plugin-babel": "^3.0.0-beta.15",
"@vue/cli-plugin-eslint": "^3.0.0-beta.15",
"@vue/cli-service": "^3.0.0-beta.15",
"autoprefixer": "^7.1.2",
"babel-core": "^6.22.1",
"babel-eslint": "^8.2.1",
"babel-helper-vue-jsx-merge-props": "^2.0.3",
"babel-jest": "^21.0.2",
"babel-loader": "^7.1.1",
"babel-plugin-dynamic-import-node": "^1.2.0",
"babel-plugin-syntax-jsx": "^6.18.0",
"babel-plugin-transform-es2015-modules-commonjs": "^6.26.0",
"babel-plugin-transform-runtime": "^6.22.0",
"babel-plugin-transform-vue-jsx": "^3.5.0",
"babel-preset-env": "^1.3.2",
"babel-preset-stage-2": "^6.22.0",
"chalk": "^2.0.1",
"copy-webpack-plugin": "^4.0.1",
"css-loader": "^0.28.11",
"eslint": "^4.19.1",
"eslint-config-standard": "^10.2.1",
"eslint-friendly-formatter": "^3.0.0",
"eslint-loader": "^2.0.0",
"eslint-plugin-import": "^2.7.0",
"eslint-plugin-node": "^5.2.0",
"eslint-plugin-promise": "^3.4.0",
"eslint-plugin-standard": "^3.0.1",
"eslint-plugin-vue": "^4.0.0",
"extract-text-webpack-plugin": "^3.0.0",
"file-loader": "^1.1.11",
"friendly-errors-webpack-plugin": "^1.6.1",
"html-webpack-plugin": "^2.30.1",
"jest": "^22.0.4",
"jest-serializer-vue": "^0.3.0",
"node-notifier": "^5.1.2",
"node-sass": "^4.9.0",
"optimize-css-assets-webpack-plugin": "^3.2.0",
"ora": "^1.2.0",
"portfinder": "^1.0.13",
"postcss-import": "^11.0.0",
"postcss-url": "^7.2.1",
"rimraf": "^2.6.0",
"sass-loader": "^7.0.1",
"semver": "^5.3.0",
"shelljs": "^0.7.6",
"style-loader": "^0.20.3",
"uglifyjs-webpack-plugin": "^1.1.1",
"url-loader": "^0.5.9",
"vue-jest": "^1.0.2",
"vue-loader": "^15.2.4",
"vue-style-loader": "^3.0.1",
"vue-template-compiler": "^2.5.2",
"webpack": "^3.6.0",
"webpack-bundle-analyzer": "^2.9.0",
"webpack-dev-server": "^2.9.1",
"webpack-merge": "^4.1.0"
},
"eslintConfig": {
"root": true,
"env": {
"node": true
},
"extends": [
"plugin:vue/essential",
"eslint:recommended"
],
"rules": {},
"parserOptions": {
"parser": "babel-eslint"
}
},
"postcss": {
"plugins": {
"autoprefixer": {}
}
},
"browserslist": [
"> 1%",
"last 2 versions",
"not ie <= 8"
]
}
Any idea where the second import is coming from? How can I debug this?
Many thanks in advance.