I have been working with reactjs from last 7-8 months, I have always used create-react-app to get started with any react application. but, by exploring more ways to get started with a react application I came to know there is a thing called vite which is I guess is providing a faster and leaner development experience for modern web projects.
I used it once till now, not in production yet as I am not very confident about it. So, which is a better way to get a simple template for react app. which is also better in production environment. Does using any one affects in production?
CRA uses webpack to handle its core functionalities. In the development webpack repeats the bundling process every time there is a change in the code. As a result, when your source code grows larger, everything becomes sluggish. The time it takes to serve a dev server and build your projects increases significantly.
Vite only needs to pre-bundle your dependencies using esbuild the first time you start development before it begins to serve your app.
Vite doesn’t need to bundle the entire app or transpile the modules and code before starting a dev server; transpiling is done on-demand, thus making it significantly faster than CRA.
https://blog.logrocket.com/vite-3-vs-create-react-app-comparison-migration-guide/#:~:text=Vite%20and%20CRA%20are%20not,and%20which%20modules%20are%20supported.
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I am using create-react-app to create my react projects boilerplates but recently launching my projects with npm start is too slow and most recently hot reloading is slow take from 5 - 15 secs to rebuild the page after any change especially when rebuilding after an error.
I really don't know much about webpack, after some search i found that problem can be from webpack or webpack-dev-server but i don't know much about them
so i don't know from where should i move to solve this issue?
If you're developing a React project in a Windows Subsystem for Linux 2 (WSL2) environment, it's especially important that you work within the WSL2 directory structure for optimal I/O. For example, you'll want to put the project in "~/repos/my-project", not "/mnt/c/Users/my-username/repos/my-project". They aren't the same location. You can confirm this by running "explorer.exe ." from the terminal.
My src folder total size is 2.6 MB and the production build is 2.7 MB. It is taking too much time to load in the browser. I am generating a build using npm run build. I have started my project with create-react-app command. How to reduce the bundle size? Please help me.
I followed this link https://codeburst.io/how-i-cut-my-react-javascript-bundle-size-in-half-with-three-lines-of-code-fe7798ecbd3f as well but the result is same.
To increase loading performance of your app, another pointer could be using code splitting feature from webpack.
Or you can even consider Server-Side Rendering with react-based frameworks like nextjs or gatsby
You can increase your application perforce there are some methods to follow
We have to use React Js latest version or above 16
We have to Remove unwanted imports in the components
Using shouldComponentUpdate()we have to control the rendering method, if its necessary then only render the component
Re Usable of components
Using Lazy Loading Concept we can increase the performance
I'm thinking about an app that uses electron, react and webpack. But I'm not sure if it make sense to use webpack on electron. I'm definitely sure that using webpack to the react part of an app could benefit a lot but I would like to know if it is the same thing with the electron part of an app.
Why do you need webpack for some cases even in node.js? Because CJS module resolution can cost a lot depends on your code:
https://twitter.com/samccone/status/1010584941355077632
Friendly reminder that Node startup time due to module runtime parse and compile is non-trivial. Illustrated below is the hello-world webpack common chunks example, As we can see the actual work takes < 1/4th of the time, the rest is lost to the javascript parse ghoul
This applies to Electron because it shares the exact same module resolution.
https://twitter.com/_ojkwon/status/933046538762207232
CJS without bundling
with webpack bundled
Still, it means development / deployment pipeline will change entirely, and this is not the guaranteed path of improving cost of module loading. You have to analyze your dependencies, and decide proper path for best performance.
Webpack is separate from electron. Webpack is used to bundle js files if you want to bundle your code together. There is a similar question that goes into additional detail here.
I come from a background in Angular, but I wanted to start learning React. I want to make a React front-end for a nodejs Express web service.
In Angular, I could simply build the source code into a static folder with a standard index.html, and it can be deployed on any web server. With React however, every tutorial I see is about running React in its own server using create-react-app and npm start.
I know you can also just use script tags to import the React framework in a static page, but then you can't use JSX syntax, and I would like to. Is it possible to simply build a React project into a static folder with an index.html that can be deployed on any web server?
Yep, you can do what you're describing. If you want to use JSX syntax, you'll need Babel, which transpiles it into standard JavaScript.
You can avoid the complexities of setting it up by using create-react-app to create the app, then running npm build instead of npm start. This will compile everything into a build directory, complete with index.html.
CRA uses its server for development purposes. You don't need CRA for using React of course. But, as your app getting bigger and bigger you will need some more extra tools. For example you want to see your code instantly without refreshing your browser. Here comes the dev server and hot reloading.
CRA uses Webpack behind the scenes. It is a great tool for bundling (obviously) all your files (including css), minifying, uglifying, optimizing your code etc.
For simple code or testing purposes using one file and attaching React and Babel to your file could be enough but for real apps you will need more. Either you will use something like Webpack on your own or you will use CRA and let it do all the extra stuff for you.
Recently I started learning react and I saw a tutorial where they used Webpack to create the production and development builds. But there was no explanation on what the difference between those two builds is and which one you have to use when. I searched the internet but didn't find anything that helped me. Does anyone have a tutorial or an explanation that I missed/didn't read?
The development build is used - as the name suggests - for development reasons. You have Source Maps, debugging and often times hot reloading ability in those builds.
The production build, on the other hand, runs in production mode which means this is the code running on your client's machine. The production build runs uglify and builds your source files into one or multiple minimized files. It also extracts CSS and images and of course any other sources you're loading with Webpack. There's also no hot reloading included. Source Maps might be included as separate files depending on your webpack devtool settings.
What specifically separates production from development is dependent on your preferences and requirements, which means it pretty much depends on what you write in your Webpack configuration.
The webpack-production documentation is very straight-forward.
Also, the article Webpack 3 + React — Production build tips describes the process of creating production builds for React with Webpack pretty good.
The very basic difference is that Production Build has ugly, minified(compressed) version of your javascript code, so this makes rendering of file on end user's browser very quick and performance enhancing.
You can also verify if production build is being used in the website by applying a google plugin extension, which when activated on your browser, will always tell you if the website is using react js on the front end and also tells whether the build type is production or development.
when react is development build,
production-ready versions of React and React DOM as single files are available as well,
<script src="https://unpkg.com/react#16/umd/react.production.min.js"></script>
<script src="https://unpkg.com/react-dom#16/umd/react-dom.production.min.js"></script>
NOTE: Remember that only React files ending with .production.min.js are suitable for production.
The production and development build come into the picture just because of performance impact in real life deployed the application. Also, it happens that the location where the application is deployed is another continent altogether, so rendering development build js files on UI will take a hell of a time as compared to production version which is very crisp, compact, compressed, uglified for better user experience and loading on UI. for information CLICK HERE
react.development.js provides us extra features like debugging, hmr(Hot module reloading) and lots of other stuffs that you might
use while developing app with the help of bundlers like webpack, parcel, vite. This bundler bundles and minifies our code to be
deployed on production
These minified files will be deployed on production which removes lots of unnecessary files which will not be used by our app
for this we have react.production.js to make our much faster(as bundlers and lots of other files have done there work and are not required now)