How can vue not expose some configuration? Configuration skills sharing

With the popularity of front-end frameworks, Vue.js has become one of the preferred frameworks for developing dynamic Single Page Application (SPA) applications. One of the advantages of Vue.js is that it provides developers with many configuration options, but some configuration items do not necessarily need to be exposed outside the project. Keeping these configuration items unexposed will help improve the security and development efficiency of the project. .

This article will introduce some tips on how to not expose some configurations in Vue.js.

1. Use .env files to manage sensitive configurations

Using different configuration files in different development environments is a very common requirement in front-end development. Vue.js provides a convenient way to manage sensitive configuration using .env files.

.env file is a file stored in the project root directory. It is composed of a series of key-value pairs. The keys of the key-value pairs must be prefixed with VUE_APP_ to indicate sensitive configurations. . In Vue.js, you can use process.env to read environment variables.

For example, we can add the following content in the .env file:

VUE_APP_SECRET="this_is_a_secret"

Create a file called config.js and add the following code in it:

const secret = process.env.VUE_APP_SECRET;

In this way, in different environments, we only need to change the configuration in the .env file to manage sensitive configurations.

But it should be noted that since the .env file is stored in clear text, some important confidential information should not be stored in the file.

2. Use the Vue plug-in to manage non-sensitive configurations

In addition to sensitive configurations, we will also encounter some non-sensitive configurations, such as API addresses, static resource paths, application names, etc. . These configurations do not involve any sensitive data and can be exposed in the project.

Vue.js provides plug-ins to manage non-sensitive configuration. The function of plug-ins is to share certain functions globally, such as introducing external libraries, defining global variables, etc.

An important feature of the Vue plug-in is that it is reusable and component-like.

The following is a sample code to implement a plug-in named "AppModule":

const AppModule = {
  install(Vue) {
    Vue.prototype.$appName = 'myApp'; // 定义应用程序名称
    Vue.prototype.$apiUrl = 'http://api.myapp.com'; // 定义API url，可以在任何地方使用
  }
};

After installing the plug-in,

Vue.use(AppModule);

At this time, throughout the project You can use $appName and $apiUrl. For example, we can use these global variables in Vue components:

export default {
  methods: {
    fetchData() {
      fetch(`${this.$apiUrl}/data`).then(res => res.json()).then(data => console.log(data));
    }
  }
}

In this way, we can share some configurations between different components while keeping the code clear and concise.

3. Use Webpack basic configuration to manage static resources

In Vue.js, Webpack is the default build tool. When we need to package and process static resources, Webpack is also what we need to pay attention to. some configurations. In these basic configurations, we can use some common techniques to manage some public configurations and sensitive configurations. The following is an actual implementation case:

module.exports = {
  // ...其他webpack配置...
  plugins: [
    // 定义全局变量，可以在代码中使用 
    new webpack.DefinePlugin({
      'process.env': {
        VUE_APP_SECRET: JSON.stringify(process.env.VUE_APP_SECRET),
        VUE_APP_API_URL: JSON.stringify(process.env.VUE_APP_API_URL)
      }
    })
  ]
};

This configuration fragment contains the processing of some protected sensitive information, and we use DefinePlugin to inject them into the code. The advantage of this is that we no longer need to manually import sensitive information in the .env file, making the code cleaner.

To sum up, Vue.js provides many flexible configuration options. At the same time, we can also use some techniques to keep some configuration items private and enhance the security and development efficiency of the project.

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