Differences between Vue3 and Vue2: Better CLI tools

The difference between Vue3 and Vue2: Better CLI tools

Vue.js is a popular JavaScript framework that is widely used to build interactive web applications. Since the launch of Vue.js, Vue CLI, as the official scaffolding tool of Vue.js, has been playing an important role in helping developers create, configure and deploy Vue.js projects. With the continuous development of Vue.js, Vue CLI has also been greatly improved and upgraded. Especially in Vue3, CLI tools have become more powerful and easier to use. This article will introduce the main differences between the CLI tools of Vue3 and Vue2, and demonstrate their improvements through code examples.

1. Installation and project creation

In terms of installation and project creation, Vue3's CLI tool has changed. In Vue2, we use the following command to install Vue CLI:

npm install -g @vue/cli

Then, use the following command to create the project:

vue create my-project

And in Vue3, we need to use the following command to install Vue CLI :

npm install -g @vue/cli@next

Then, use the following command to create the project:

vue create my-project

As you can see, the CLI tool in Vue3 needs to specify the version number @next to ensure that it is installed It is the Vue3 version. This is done to be compatible with Vue2 and Vue3 projects.

2. Configuration of creating a project

When creating a project, Vue3's CLI tool introduces a new interactive configuration interface, making the project creation more flexible and customized. We can reconfigure the project with the following command:

vue ui

This will launch a visual user interface, allowing us to add plugins, adjust configuration options, and manage dependencies in a graphical interface.

Through Vue3's CLI tool, we can more easily customize projects to meet specific needs. For example, we can enable TypeScript support, add a unit testing framework, etc.

3. Debugging and Building

In terms of debugging and building, Vue3’s CLI tools have also been improved. In Vue2, we use the following command to start the local development server:

npm run serve

And in Vue3, we use the following command to start the local development server:

npm run dev

Additionally, in terms of building the project, Vue3's CLI tool uses Vite as the default build tool, replacing Webpack in Vue2. Vite is a development server based on ES modules. Its unique construction method greatly improves development efficiency.

4. Improvements of Vue CLI plug-ins

Vue CLI provides many useful plug-ins to extend the functionality of the project. In Vue3, these plugins have also been improved and upgraded.

The first is the PWA plug-in to support progressive web applications. In Vue3, the PWA plug-in has been optimized, making it easier to configure and integrate Service Worker, Manifest and other functions during the build process.

The second is ESLint and Babel plug-ins. In Vue3, the ESLint and Babel plug-ins are integrated into the CLI tool, which means that we do not need to configure ESLint and Babel separately and can directly use the default configuration provided by the Vue CLI.

In addition, Vue3 also introduces a new plug-in system, making the development and use of plug-ins more convenient. By creating a simple plugin, we can customize the behavior of the CLI tool and add our own commands and functionality.

5. Summary

Vue3’s CLI tool has brought many improvements and upgrades, allowing developers to better control and customize their Vue.js projects. Vue3's CLI tools have obvious improvements in terms of installing and creating projects, creating project configurations, debugging and building, and plug-ins.

Through the above introduction and code examples, we hope that developers can have a deeper understanding of Vue3's CLI tool and be better able to apply it to actual project development. Whether it’s a new project or an ongoing one, upgrading to Vue3’s CLI tool is undoubtedly an option worth considering. Let us welcome a better and more powerful Vue.js development experience together!

The above is the detailed content of Differences between Vue3 and Vue2: Better CLI tools. For more information, please follow other related articles on the PHP Chinese website!