Is it possible when I build my project npm run build to generate config files where we can change a few variable value on the fly without rebuilding the whole project every time I change a value?
The config file need to be in .json or in .js and will contain variables like : updateDelay, pageNumber, path, graphQlUri... Variables that are used in the projects and can be changed by the user.
If it's possible how I'm doing it?
Thanks
Related
I have few files in diferent folders (for example: tranlations..js, constants..js). I want to remove files from my build, because one customer doesn't need know about another customers, but you can see variables in Source page. So, i need to config build and remove files witch are for another customer, how I can do it by Vite in react app?
I didn't find solution or library that can help me
The build version is working perfectly but can't see where it stores the environment variables. Are they hidden or visible to everyone ?
The Create React App (Webpack) build process "folds" the environment variables into constants in the source, and things are bundled as per usual after that.
They're visible to anyone who looks at your app's script files in their browser's View Source or Inspector views.
Currently when building our react application, we are using Webpack like so
new webpack.DefinePlugin({
'process.env': {
REACT_APP_BASE_URL: JSON.stringify(process.env.REACT_APP_BASE_URL),
... 20 more lines,
So, these parameters are supplied at build time, the react application is built to static file and then served with an nginx that we have full control
Through out the application, we use process.env.REACT_APP_BASE_URL and those 20 more process.env.x variables.
Previously, for each runtime environment, we need to build the application again and provide respective parameters at build time. Now we are trying to build once and insert these parameters at deploy time.
My question is what is the most feasible way to provide those variable at deploy time with the least impact/change to our current source code?
make different .env file like .env.production, .env.qa and user it in script of package.js enter link description here
Currently I am developing a react application. I have created a .env file and am using the environment variables in all other pages but am not able to see the .env file in the build folder. Is there any way to change the environment variables at run time in the build file?
This will work when changing the hostname and port, etc. manually and then cresting the build. Is there any way to change the variables after creation of the build?
Any help will appropriated.
Thanks,
Riya
The answer to your question can be found here:
Create React App Docs: Adding Custom Environment Variables
The environment variables are embedded during the build time. Since Create React App produces a static HTML/CSS/JS bundle, it can’t possibly read them at runtime. To read them at runtime, you would need to load HTML into memory on the server and replace placeholders in runtime, just like described here. Alternatively you can rebuild the app on the server anytime you change them.
How do I change/update homepage automatically without changing package.json in a React app?
I have A and B project, both projects have individual roots for Production Build, but they share a same root for Test Build. That's why I have different homepage configured for different environments. When I merge its Test Branch to its Prod Branch, I have to keep the package.json file different, which is not smart at all.
So, are there any ways that I can grab an Env variable and pass in?
if you are using create-react-app version greater or equal than 0.9.0 in package.json remove homepage
and add PUBLIC_URL in your .env file
Adding Custom Environment Variables