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Hot Module Replacement (HMR)

Knowledge Base / Glossary: "Hot module replacement (HMR) is a feature of some web development tools that allows developers to update and modify the code of a running application without having to stop and restart the application. This can save time and effort, and can make i..."

Hot module replacement (HMR) is a feature of some web development tools that allows developers to update and modify the code of a running application without having to stop and restart the application. This can save time and effort, and can make it easier and more efficient for developers to iterate on the code of their application.

HMR is typically used in web development environments that support live reloading, where changes to the code of the application are automatically propagated to the running application without the need to stop and restart it. HMR builds on this concept by allowing developers to update and modify the code of a running application without having to reload the entire application. This can be particularly useful when working on large, complex applications, as it can save time and effort by allowing developers to see the effects of their changes in real time.

One of the key benefits of HMR is that it can improve the efficiency and productivity of the development process. By allowing developers to update and modify the code of a running application without having to stop and restart it, HMR can save time and effort, and can make it easier and faster for developers to iterate on the code of their application. This can be particularly useful in fast-paced development environments, where the ability to quickly and easily make changes to the code can be a key differentiator.

Another benefit of HMR is that it can improve the overall User Experience of the application. By allowing developers to update and modify the code of a running application without having to stop and restart it, HMR can help to reduce the amount of downtime that the application experiences. This can help to improve the overall availability and reliability of the application, and can make it more responsive and engaging for the users.

Overall, HMR is a useful feature of some web development tools that allows developers to update and modify the code of a running application without having to stop and restart it. By improving the efficiency and productivity of the development process, and by improving the overall user experience of the application, HMR can be a valuable tool for developers working on large, complex web applications.