Fixing Vue Router's cleanPath Function

Introduction

In this project, you will learn how to fix a bug in the vue-router library by modifying the cleanPath function. The vue-router library is a popular routing solution for Vue.js applications, and it's important to ensure that it works correctly, especially for edge cases like paths starting with multiple slashes.

👀 Preview

🎯 Tasks

In this project, you will learn:

• Understand the issue with the cleanPath function in the vue-router library
• Install the necessary dependencies for the project
• Locate and modify the cleanPath function to fix the issue
• Rebuild the project with the updated cleanPath function
• Test the fix to ensure that the issue is resolved

🏆 Achievements

After completing this project, you will be able to:

• Identify and diagnose issues in third-party libraries
• Modify and update the code in a third-party library to fix a bug
• Rebuild and release a project with the updated code
• Test the fix to ensure that the issue is resolved

Set Up the Project Structure

In this step, you will set up the project structure and learn about the issue in the vue-router library and how to fix it.

The vue-router library has a bug in version 3.5.2 where a path starting with multiple slashes (///) may actually redirect to another domain. This is because the cleanPath function in the library only replaces two slashes, instead of all multiple slashes.

To fix this issue, you will need to modify the cleanPath function in the vue-router-3.5.2/src/util/path.js file.

To get started, look at the directory structure of the files on the left as follows:

├── vue-router-3.5.2
├── vue.js
└── index.html

1. Click on Go Live button in the bottom right corner of WebIDE, to run the project.

2. Open "Web 8080" on the top of the VM and refresh it manually, the effect should be as follows:

   

3. Copy the address in the image above to open a new window in your browser and click on the "Go to Foo" button and the page will jump to a Google page.

   

Fix the cleanPath Function

1. Open the vue-router-3.5.2/src/util/path.js file.

2. Locate the cleanPath function:

   export function cleanPath(path: string): string {
     return path.replace(/\/\//g, "/");
   }
   

3. Update the cleanPath function to replace all multiple slashes with a single slash:

   export function cleanPath(path: string): string {
     return path.replace(/\/+/g, '/');
   }
   

   The /\/+/g regular expression will match one or more consecutive slashes and replace them with a single slash.

Rebuild and Test the Project

1. In the terminal, navigate to the vue-router-3.5.2 directory.

2. Run the command npm install to install the dependencies. This process might take a while, please be patient. (If it gets stuck for a long time, please press Ctrl+C to terminate the process and then run this command again.)

3. After all dependencies have been successfully installed, run the command npm run build to rebuild and release the project with the updated cleanPath function.

4. Go back to the web page and refresh the page.

5. Click the "Go to Foo" button, and you should see that the page no longer redirects to a Google page, but instead stays on the local application.

   

Congratulations! You have successfully fixed the issue in the vue-router library by updating the cleanPath function.

Summary

Congratulations! You have completed this project. You can practice more labs in LabEx to improve your skills.