How to Upgrade
First, reinstall the latest version of
yarn global add @vue/cli # OR npm install -g @vue/cli
Then in the projects, run
Vue CLI UI CORS Issue
A critical CORS vulnerability is fixed in this version.
We recommend all users of
vue ui to upgrade to this version as soon as possible.
Lock Minor Version By Default
From this version on, newly-created projects and newly-added CLI plugins will lock the plugin version ranges to their minor versions.
The core functionalities of Vue CLI is quite stable at the moment. So we decided to make this change to improve project stability even more.
Users can run
vue upgrade periodically to bump the minor versions in the projects.
We also expect this change to make the adoption of new features smoother.
See more detailed explanation at #5012
With the recent updates in the ecosystem (eslint-plugin-vue, @vue/eslint-config-airbnb, @vue/eslint-config-standard, @vue/eslint-config-prettier, @vue/eslint-config-typescript), Vue CLI now supports ESLint 6. It will scaffold all new projects will ESLint 6.
For users from older versions, ESLint 5 is still supported. If you want to adopt ESLint 6 in the project, it's recommended to migrate through the
vue upgrade command; otherwise, there will be much manual work to do.
Optional Chaining & Nullish Coalescing
Note: scripts only, support in template expressions only available for Vue 3
// Optional chaining a?.(); // undefined if `a` is null/undefined b?.c; // undefined if `b` is null/undefined // Nullish coalescing undefined ?? 'some other default'; // result: 'some other default' null ?? 'some other default'; // result: 'some other default' '' ?? 'some other default'; // result: '' 0 ?? 300; // result: 0 false ?? true; // result: false
If you're using Babel, these syntaxes supported by default since this version, so no actions to take.
If you're using TypeScript, the
vue upgrade command will automatically do the necessary
configurations for you, or you can manually upgrade your typescript dependency to 3.7.0 or later.
vue upgrade and
See the Pull Request at #5091
You may have encountered the
TypeError: Invalid Version: N/A error if you ran
vue upgrade in a monorepo or forgot to run
npm install first.
It is because, to run corresponding migration scripts, Vue CLI needs to know which versions of plugins the project previously depended on.
Monorepo support has been added since v4.2.
But in case of missing dependencies or any other edge cases, you can pass a
--from option to the command to skip the local version detection step. For example:
vue upgrade eslint --from 4.1.2.
vue migrate --from command is available for those already bumped to the latest versions but didn't run the migration scripts.
Better Yarn 2 Support
Previously in v4.1.0, we added basic Yarn 2 support with the introduction of
Now since Yarn 2 has officially released, we have also improved the support in Vue CLI.
You can create new projects directly with Yarn 2 and run it. That extra plugin is no longer required.
Not every plugin works under Yarn 2. Yarn 2 comes with a lot of breaking changes that make requires some serious work to be done in the entire Node.js ecosystem.
As for Vue CLI, we still have much work to do for the compatibility of the
e2e-*plugins. There may also be a few glitches in the
yarn dlx -p @vue/cli vue create hello-yarn-2 --default cd hello-yarn-2 yarn serve
Project Template Changes
- The default ESLint version is bumped to v6. Users can upgrade through
- The default TypeScript version is bumped from
~3.7.5. Users can upgrade through
vue upgrade, or manually change the dependency version in
- For ESLint + TypeScript + Nightwatch users, due to the ESLint rule change, an additional rule needs to be added to
tests/e2e/.eslintrc. We haven't implemented an automatic migration script for it. Please add it manually. See https://github.com/vuejs/vue-cli/blob/v4.2.0/packages/%40vue/cli-plugin-e2e-nightwatch/generator/template/tests/e2e/_eslintrc.js#L5
- The default
@vue/test-utilsversion used for unit tests is bumped from
1.0.0-beta.31. Due to the breaking changes, we didn't migrate it automatically for old projects. Please read the release notes and upgrade at your own will.
🚀 New Features
🐛 Bug Fix
- Alexander Sokolov (@Alex-Sokolov)
- Bogdan Luca (@lbogdan)
- Cédric Exbrayat (@cexbrayat)
- Dan Hogan (@danhogan)
- Daniel Bächtold (@danbaechtold)
- Eduardo San Martin Morote (@posva)
- Guillaume Chau (@Akryum)
- Haoqun Jiang (@sodatea)
- Marcel Lindig (@nullpilot)
- Maël Nison (@arcanis)
- Pavan Kumar Sunkara (@pksunkara)
- Tao Wei (@taoweicn)
- Thomas Kint (@tkint)
- Thorsten Lünborg (@LinusBorg)
- Xin Tan (@mactanxin)
- Yingya Zhang (@zyy7259)
- plantainX (@cheqianxiao)