#LIVERELOAD REACT INSTALL#
#LIVERELOAD REACT FULL#
#LIVERELOAD REACT CODE#

When we create a new project using the create-react-app, the HMR plugin is enabled by default in the webpack configuration file, though we can’t see this file because create-react-app configures our application for us and hides the configuration files. We will visit this address on our browser and keep the tab open because throughout this tutorial, we will be monitoring the updates and behavior of the application in the browser. This command starts the web server that points to the address localhost://3000. We can run the application using this command: npm start Let’s spin up a new instance of a create-react-app project and navigate into the newly created directory with these commands: create-react-app react-hot-loader-demo

#LIVERELOAD REACT INSTALL#

If you don’t already have the create-react-app tool on your computer, you can install it with this command: npm install -g create-react-app Set up the development environment We will be using the create-react-app tool to create the React application.Very basic knowledge of React is assumed, and a general understanding of JavaScript would be helpful.Please ensure that you have Node and npm installed before starting the tutorial.

#LIVERELOAD REACT CODE#

The resulting code for this article is available here on GitHub. The primary aim of this tutorial is to demonstrate how we can quickly setup react-hot-loader for our React application so that its components can be live reloaded without a loss in state.

A live reload to an app will restart the entire app, and load cause it to lose its state.

A hot reload to an app will only refresh the files that were changed without losing the application’s state.

The reason we lose the state can be understood by first understanding the difference between hot reload and live reload: HMR solves the problem of hot reloading, makes it easier to tweak styling (almost comparable to changing styles in the browser’s debugger) and generally speeds up the development process.īut what happens when we live reload in a component based framework like React that keeps track of its states? We lose the state. This can significantly speed up development in a few ways.

#LIVERELOAD REACT FULL#

Hot Module Replacement (HMR) exchanges, adds, or removes modules while an application is running, without a full reload. HMR, as the name implies, can replace modules without restarting the server and can easily be enabled with different bundlers. This leads us to talk about Hot Module Replacement (HMR). It works by replacing a module of the application during runtime with an updated one so that it’s available for instant use. In a bid to solve this problem, developers created several plugins and tools that can cause the DOM to re-render on each save without even doing a full-reload. Several years ago, it was becoming tiring (and annoying in the case where the changes do not render as expected) to refresh the browser to see the most recent updates on a web project. Building the web with the community JS and Senior Advocacy for the Next Billion Users through Microsoft. Nx : Not : Not : : : : : Not : : : : Not : : : Not : : : 11.2.Christian Nwamba Follow JS preacher. In addition, I followed the migration guide for using a CRA react app with NX. I followed the official instructions for installing a React application for NX. Here is also a small video showing steps 4-7: Make another change in the file (check while saving that in dev tools the head and body tags are NOT refreshed).Check that there is no new console statement reflecting the change.Change/add/delete a line in file 'libs/app/core/src/lib/models/route-keys.ts' for enum RouteKeys and save (check while saving that in dev tools the head and body tags are refreshed).Open browser dev tools (preferable chrome) and select elements tab.

Expected BehaviorĬhanging a file in a connected library results in refreshing the app and pushing all the changes to the running app in the browser. After the first change and save the changed enum is not logged to the console although the head and body tags are refreshed (short color flash in elements tab). In the example to reproduce the issue an enum (same while trying with an object) is logged to the console. After the second save/change the app in the browser is not refreshed.īut also after the first save the changes are not visible in the browser. Changing a file in a connected library for an application, the changes are only pushed the first time to the running app.

Livereload react