I'm trying to run a server to see my project on browser, the only way i can do it is running npx mix watch --hot, so after that my project start running at localhost:8080.
But the above command enable hot reload, i would like to know if there is some specific command to just run the server, without enabling hot reloading.
I tried npm mix watch but it not starts the server, just watch the files.
Tried calling manually webpack server with:
./node_modules/.bin/webpack serve --config="./node_modules/laravel-mix/setup/webpack.config.js"
This works (the server starts at localhost:8080 as well) but somehow it activates hot reloading too, idk why.
So, there is some way to just start the server? Without enabling hot reloading?
Here is my webpack.mix.js file:
let mix = require('laravel-mix');
mix.sass('src/scss/app.scss', 'dist/css/')
.js('src/js/app.js', 'dist/js/').react()
.setPublicPath('public');
My package.json has just the default script:
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
If you're using Composer you can run php artisan serve, this will start a local php server and serve your web pages to the browser Laravel installation.
I want to integrate Eslint in my Nextjs application and prefer to run Eslint simultaneously with the development server. I have two scripts, namely server and lint and want to run them at the same time. I tried to implement it via dev script, but the development server seems not to be reloading on file changes in this implementation. Is there any way to run the two simultaneously?
"scripts": {
"dev": "npm run server && npm run lint",
"server": "next -p 7777"
"lint": "esw --fix components/**/*.js lib/**/*.js pages/**/*js"
}
My express server is set to run on port 8081. I start it up with nodemon server/start.js
My Vue app runs on port 8080. I run nodemon build/dev-server.js to start it.
The problem I have is if express server is running on 8081, I can't run Vue app. It just ends with this error:
Starting dev server...
[1] Killed
[nodemon] app crashed - waiting for file changes before starting...
I can start Vue if express is not running though.
I'm using NGINX btw.
It seems like there is a problem when you use nodemon to watch more than one file. You can follow this Gist. You can try to run one file with node.
As Tolsee mentioned, you can run both with a single command, just don't use nodemon for both files. Here is an example that is working for me with a Vue 2 app and an Express server:
"scripts": {
"dev": "node build/dev-server.js --hot | nodemon server.js", // this line
"start": "node build/dev-server.js",
"build": "node build/build.js"
}
Hopefully that helps anyone that has run into this problem :)
I also faced the same issue once So, instead of using nodemon I suggest you to use pm2. Checkout this blog on using pm2 to run the Backend server and the frontend dev server simultaneously Simultaneously Running Express and Webpack Dev Server by Henrik Fogelberg
My app uses Webpack and an Express server. Will I create problems if I run webpack --watch in one terminal tab, and npm run watch in another?
Is there a better way to auto-build after files change, and also refresh the server?
I guess it won't create any problem and if you make any changes in your component, webpack will automatically compile the changes and you need not refresh the server. Use this in your package.json
"scripts": {
"start": "webpack-dev-server --hot"
}
Install by using npm install webpack-dev-server
Hope it helps!
We're developing a ReactJS application using Create-React-App, that is served from our Node/Express server that also serves API's. We deploy the whole server to Heroku using node/JS buildpack and trying to get the CRA build step npm run build in postinstall script from the node package.json file as suggested by #mars in this issue.
The issue is that Heroku deployment is failing with this error. Note that this error happen to me sometime locally but then a npm install from the web_app is solving the issue, but not when run in Heroku. I have two related questions:
How to deploy to Heroku a Node/Express app that serves both APIs and a Create-React-App application? I can commit my build directory but this is really not the right way.
Why the react-scripts are disappearing and I have to run multiple times the npm install.
#johnnycon -
This was exactly the issue and I've received the answer from Mars in this github issue post:
#philjoseph, react-scripts is (by default) a devDependency for CRA apps, but Heroku Node buildpack has environment NODE_ENV=production which causes npm install to skip devDeps.
To install those devDeps too:
npm install --only=dev && npm install && npm run build
He also pointed to this excellent repo: https://github.com/mars/heroku-cra-node
I followed this and it works like a charm :)
Since you need "react-scripts" both in development and in production, you can simple move "react-scripts": "1.0.16" from "devDependencies" into "dependencies", so heroku doesn't ignore it.
There's a very simple solution. Before running the start script, Heroku will run a build script if it's in your package.json.
"scripts": {
"start": "node server.js",
"build": "cd client/ && yarn install && yarn build"
}
For Anyone in 2021, Follow Alexander Cherednichenko's VERY SIMPLE advice
Explanation:
As of October 2021, Create-React-App's react-script package has a ton of security vulnerability issues. I'd imagine a few people may run into their "fix" which suggests moving react-scripts to devDependencies. If you're deploying to Heroku this will NOT work. Moving react-scripts to devDependencies will cause this error since Heroku needs react-scripts to build the React app. It'll be fine locally, and you'll be vulnerability free when you run npm audit --production or yarn audit --production. Ultimately, though, Heroku will demand react-scripts is in the regular dependencies section.
The highest voted answer provides a great example repo by Mars Hall (a principal engineer at Heroku) for creating a react app that's served from a node backend. These days, though, it too includes react-scripts in the regular dependencies section of it's react-ui/package.json file.
In addition, since Create-React-App defaults to Yarn these days, the addition of npm install --only=dev will not run nor work (that I could tell based on the node buildpack log). Moreover, it may add testing dependencies that your app definitely won't need in production.
Unfortunately, until Create-React-App decides to do some updates, it's best to just ignore the issues that npm audit brings up (at least the ones related to react-scripts). Since react-scripts is a build tool, it's extremely unlikely for any vulnerabilities raised to be exploited.
P.S. This likely would be better suited as a comment under Alexander Cherednichenko's answer but I was one reputation away from being able to do so.
P.P.S Hopefully someone actually finds this helpful!
Are react-scripts declared as a devDependency or regular dependency in package.json? Since you're building on Heroku and heroku is reading the env variable as production (I'm assuming here), it won't install react-scripts. Try moving react-scripts as a regular dependency and try again.
With other cloud providers, I likely wouldn't follow this path, but with Heroku, it's the path of least resistance I've found. This article goes into a little more detail on your scenario. https://originmaster.com/running-create-react-app-and-express-crae-on-heroku-c39a39fe7851
i was trying exactly the same thing, deploy a create-react-app project to heroku, and was getting react-scripts not found something....
Heroku reads the scripts into package.json and cannot execute them.
The key to overcome this issue is to 'create/publish' the 'scripts' folder, which by default create-react-app does not create it, just to keep things simple.
So by running the eject command $npm run eject, the scripts folder its created as long as the config folder.
After that you can execute again the heroku script e.g. $ git push heroku master
and hopefully it wil deploy everything on Heroku.
More info about eject script on create-react-app documentation
Hope this helps, good luck.
Can you share how your Package.json file Scripts look? I actually deployed to Heroku yesterday and it seems to be working quite ok for me.
Maybe your dependencies are not added correctly in your package.json.
This is how my scripts look (if you don't have any scss/less/sass ignore the first 2 scripts):
"scripts": {
"build-css": "node-sass src/ -o src/",
"watch-css": "npm run build-css && node-sass src/ -o src/ --watch --recursive",
"start": "npm run start:server",
"watch": "npm-run-all --parallel watch-css start:*",
"start:server": "node server/server.js",
"start:client": "react-scripts start",
"build": "npm run build-css && react-scripts build",
"test": "react-scripts test --env=jsdom",
"eject": "react-scripts eject",
"postinstall": "npm run build"}
When running in Development to take advantage of the Hotrealoding I run
npm run watch
And for PROD I run
npm run build
And then I deploy to Heroku. Try to check the logs from Heroku in a separate Terminal window so you can check what is wrong with your deployment.
Simply use heroku logs to display the last 100 lines of your logs.
Or to tail the logs in real-time: heroku logs -t.
Specify Node Environment
Tell heroku what version of heroku we want to use. By default heroku uses older version which will crash our app. you have 2 package.json files, one in client, another one is in the express server side. in express server side add this to package.json
"engines": {
"node": "12.9.1",
"npm": "6.10.2" },
Specify start script
Instruct heroku what command it should run to start up our server. Add this to the server side package.json
"start":"node index.js",
INSTALL HEROKU CLI
Install Heroku Cli
Sudo apt-get update
curl https://cli-assets.heroku.com/install-ubuntu.sh | sh or sudo snap install heroku
In macos
brew install heroku cli
By default heroku uses a git based deployment procedure or workflow.
Git init
Git add .
Git commit -m “initial commit”
Heroku login
Heroku create nameOfTheApp
https://git.heroku.com/nameOfTheApp.git
This link is our deployment target. It is a git repository that we can push our local server to it.
Git remote add heroku https://git.heroku.com/nameOfTheApp.git
Git push heroku master
I had the same problem and happened to solve the problem by adding a few lines in the package.json (the one for the main project not the one in the client side) after seing #Daniel's comment.
What's happenning here is that Heroku is searching for the react scripts that can be used to install the dependecies and build the app on the client side. In my case both of those scripts were missing. In fact this is how my scripts looked like when I had the problem :
...
"scripts": {
"start": "node server.js",
"dev": "nodemon server.js",
"build": "cd client && npm run build",
"client": "cd client && npm start"
},
...
Heroku was expecting the scripts "install-client" and "heroku-postbuild". I just added them and the error dissapeared :
...
"scripts": {
"start": "node server.js",
"dev": "nodemon server.js",
"build": "cd client && npm run build",
"client": "cd client && npm start",
"install-client": "cd client && npm install",
"heroku-postbuild": "npm run install-client && npm run build"
},
...
I hope this would help someone.