Using create-react-app's npm startwith AWS Cloud9 - reactjs

I am attempting to use create-react-app in AWS Cloud9. While I have no problems creating the app, when I try to run npm start I just get this screen. When I clicked on "Why am I seeing this?" I was taken to this page, which led me to turn on HTTPS. While HTTPS was enabled, it did not fix the issue. create-react-app's Github page suggested that CHOKIDAR_USEPOLLING=true is required for virtual machines, but that also did not fix the issue: it now creates a blank page, as shown here. Finally, thinking that perhaps the issue was due to some accidental change, I deleted the directory and made a fresh one, but the issue persisted.
Any insight on how this can be resolved would be appreciated.

I had a similar issue. For me I was just going about it the wrong way and I can preview my application by going to Preview at the top of the IDE and then Preview Running Application.

Related

Create-React-App: React is rendering index.html as text in development mode

We are working on react project that we had setup using "create-react-app". We are using git as multiple dvelopers are working on this project.
Everything is working fine as expected but sometime we get very strange issue in which react renders content of index.html as text (Please see attached screenshot below) instead of rendering as html page.
We get this issue when we switch to other git branch and then run react app in development mode after taking pull of latest code from working branch. We had tried to resolve this issue by deleting node_modules and package-lock.json file and then run "npm install" on the same branch but issue is still persist.
This issue is coming only when we run app in development mode. There is no issue with production build. We think this issue is coming due to cache somehow. Therefore, we had tried to disable cache or clear browser cache but nothing works.
Can someone please guide about what we are doing wrong and we are missing something? We have tried many things but not able to find our root cause of this issue.
Thanks in advance.

Github-Pages deployement issue

I have worked on an organization whose entire account was deleted by mistake but was later restored. Now I am trying to deploy a project in this org with gh-pages. Everything works or seems fine like to commits and all, unless I try to deploy the project. When I run the command npm run deploy the feedback I get is "published". But when I go to github and look for the website it says Error 404.
I have looked into the deployment log and found
this
I have tried every possible way to deploy a project using gh-pages and I have followed its procedure carefully. I found nothing useful which can solve this issue.
Thankyou in advance.

tsParticles has worse performance on live-server

I am currently stuck and unable to locate the error. After building my react application containing the react-tsParticles package, I noticed a immense worse performance after publishing it on my nginx-based webserver. While in local development performance is fine, but the performance when visiting the live page is bad and not comparable to other examples on the internet.
I am not interested in advertising my page, but this is the link to it.
The Code can be found here on Github.
Any advice is appreciated :)
I had this problem too
there is a problem with the build tool or bundle file that occurs when using the npm run build command.
also may be solved by changing the browserslist in package.json.
you can refer to this answer : https://stackoverflow.com/a/70625114/8730051

Hot reload stopped working after adjusting environment for work requirements

I started a new developer role a few days ago and made some environmental changes to adapt for work. Since then, my hot reload/fast refresh has just stopped working entirely. Changes don't show up even if I refresh the page manually. Only shows changes when I stop the dev server and restart it with 'npm run dev'. The triangle indicator at the bottom right should be active, showing active reload of the window (this no longer shows up consistently either, and if it does the page gets reloaded, but alas the proposed changes aren't visible)
Context:
It has this effect on all NextJS and react applications of mine. Even running a basic project template off the NextJS examples page shows no hot reload working.
I researched this issue and it seems wrong imports (e.g. importing components using lowercase or files in the pages directory being capitalized) can cause this, but I combed through the code and can't spot any issues (of course, I could be missing it but my codebase is over 300 files).
Service workers in the background can cause issues, but I cleared my browser of all of them to be sure and it still doesn't fix it.
I installed ngrok for tunneling for work purposes and docker-compose to handle the work dev. environment.
Made sure I'm using the latest Next version. Even deleted node_modules and ran npm install. Deleted .next and the out folder and still no luck.
Anybody have any ideas or clues to what I should try next? Is it related to the stuff I installed for work? Something related to VS code or WSL2? Seems so puzzling it kind of just happened overnight. Thanks for any insight or advice!
System information
OS: Windows (WSL2 virtualization for VS code)
Browser: Chrome
Version of Next.js: 10.0.3
Version of Node.js: 14.8.0
Deployment: npm run dev for development work; amplify publish for AWS hosting
The problem is with WSL2. I use WSL2 inside VS Code; which is a big performance upgrade in the Linux environment. The problem is WSL2 is actually in a 'virtualization' and thus cannot send information from VS Code AND the browser (localhost:3000) at the same time.
It's a big issue they are working on and there is no fix yet for it. That's why fast refresh doesn't work because localhost is not receiving the changes being made. Either proxy through or revert back to WSL1 https://github.com/microsoft/WSL/issues/4769
Solution provide by OP on question section
Add a .env file or a .env.local file to your root and put this line on it:
WATCHPACK_POLLING=true
Now, restart your server.
Thanks I encounter the same issue with WSL2. I just switch to windows terminal and it works.
If you run Poweshell as administrator and run
wsl.exe -l -v
This will give you th eversion of wsl your distros run on.
I am personally using Ubuntu, and this is the output
Ubuntu Running 2
docker-desktop Stopped 2
docker-desktop-data Stopped 2
To switch to wsl 1,
Run
wsl.exe --set-version Ubuntu 1
and if you wanna switch back,
run,
wsl.exe --set-version Ubuntu 2.
This worked for me.
In my react projects, I just add in my .env file at the root project folder the values
FAST_REFRESH=false
CHOKIDAR_USEPOLLING=true
and it works! enjoy!
The problem is with WSL2. I use WSL2 inside VS Code. But React JS and Next JS projects don't auto-reload. So, add a .env or .env.local (recommended) file to your root and put these lines on it:
WATCHPACK_POLLING=true
CHOKIDAR_USEPOLLING=true
Now, restart your server.

Why is create react app npm start deploying previous version of code?

When running npm start to deploy my code to localhost:3000 the version displayed is a previous version of the code.
I've tried resetting my editor (Visual Studio Code) and Node.js. Tried disable cache in the network inspector of Chrome.
The browser will reload upon a save, however it will not use the correct code. It continues to 'hang' on the previous version.
This is potentially an issue with the create-react-app service worker.
Can you please look for that file, and remove it or comment it out?
Otherwise, it is possible you have an error in your code.

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