#VUE CLI INSTALL#
#VUE CLI UPGRADE#
#VUE CLI FULL#

mocha is upgraded from v6 to v8, please refer to the release notes of mocha v7 and mocha v8 for a complete list of breaking changes.See their corresponding changelogs for more detail: For most users the transition would be seamless. The underlying jest-related packages are upgraded from v24 to v27.

#VUE CLI INSTALL#

Users need to install manually to the project root.

For TypeScript projects, ts-jest is now required as a peer dependency.

For Vue 2 projects, is now required as a peer dependency, please install as a dev dependency to the project.

See the blog post on release for more details. See Cypress Migration Guide for detailed instructions of the migration process.

Cypress is required as a peer dependency.

fork-ts-checker-webpack-plugin is upgraded from v3.x to v6.x, you can see the detailed breaking changes in its release notes:.

eslint-loader is replaced by eslint-webpack-plugin, dropping support for ESLint = 3.6.

Setting it to true will transpile all dependencies inside node_modules. The transpileDependencies option now accepts a boolean value.

mini-css-extract-plugin is upgraded from v1 to v2.

When creating new projects, the default less-loader is updated from v5 to v8 less from v3 to v4 sass-loader from v8 to v11 stylus-loader from v3 to v5.

terser-webpack-plugin is upgraded from v2 to v5, using terser 5 and some there are some changes in the options format.

#VUE CLI FULL#

A full list of breaking changes is available at copy-webpack-plugin v6.0.0 changelog. If you never customized its config through ugin('copy'), there should be no user-facing breaking changes.

copy-webpack-plugin is upgraded from v5 to v8.

Most notably, PostCSS options ( plugin / syntax / parser / stringifier) are moved into the postcssOptions field.

postcss-loader is upgraded from v3 to v5.

See the v8 breaking changes at its changelog. More details are available in the release announcement of html-webpack-plugin v4 and the full changelog.

html-webpack-plugin is upgraded from v3 to v5.

Instead of import Underlying Loaders and Plugins #

Named exports from JSON modules are no longer supported.

There are plenty of breaking changes underlyingly, listed in the release announcement page Webpack 5 release ().Д«esides the internal changes that are only noticeable for custom configurations, there're several notable changes for user-land code too: We've upgraded the underlying webpack version to 5. If you need a minimum setup for developing standalone. Now the vue serve / vue build commands are aliases to npm run serve / npm run build, which in turn execute the scripts specified in the project package.json. The instant prototyping functionalities are removed.

#VUE CLI UPGRADE#

If you want to migrate manually and gradually, you can run vue upgrade to upgrade a specific Vue CLI plugin. If you see errors like setup compilation vue-loader-plugin(node:44156) UnhandledPromiseRejectionWarning: TypeError: The 'compilation' argument must be an instance of Compilation after upgrading, please remove the lockfile ( yarn.lock or package-lock.json) and node_modules in the project and reinstall all the dependencies.

Vue cli