I cloned into the react-native-navigation git and would like to use their showcase app. However, running npm run install-android and then npm run start does not start the app. When I use the npm run test-unit-android the test work.
What am I doing wrong or seeing?
Related
I'm trying to build my Expo mobile app locally.
When Expo starts the [INSTALL_DEPENDENCIES] step, it performs npm install. But in my case, I'm aware of a legacy package I'm using which is causing some problems. So, this step is broken and the build is failing.
I want to configure Expo to perform npm install --legacy-peer-deps instead of npm install.
In my case, I have rn-pdf-reader-js#4.1.1 with Expo SDK 46.
Is this option configurable?
After looking a little bit, I figured it out using:
Create .npmrc file in the project root directory with:
legacy-peer-deps=true
However, another option is to run npm config set legacy-peer-deps true in eas-build-pre-install hook.
In package.json, add the following to scripts:
"eas-build-pre-install": "npm config set legacy-peer-deps true"
metro bundler
I'm trying to run an app published by other programmer but it doesn't run metro bundler on google chrome when I type npm start on terminal.
On the other hand, I created a project and run it and it works
my project
Open new terminal and run below command, It will bring up expo dev client.
expo start --dev-client
Sometimes it might throw an error as below.
Missing package "metro/src/lib/attachWebsocketServer" in the project. This usually means react-native is not installed. Please verify that dependencies in package.json include "react-native" and run yarn or npm install.
To fixing this issue, run the command
npm install -g expo-cli
npm install expo-dev-client
expo start --dev-client
You need to install the dependencies of the other developer's project by running 'npm install' before starting metro bundler.
I just got a Mac Mini M1 for personal use, and I'm trying to run a preexisting React app. I installed nodejs and npm successfully, and running npm install does add the node_modules folder correctly as far as I can tell; but whenever I run npm start or npm run <script>, I get an error. It seems that npm can't access any of the project's dependencies. I've tried this using the rosetta terminal as well with the same results.
For an example, I initialized a new React project with npx create-react-app test_app, then cded into it and ran npm start. I got:
test_repo#0.1.0 start
> react-scripts start
sh: react-scripts: command not found
How do I get these commands to run properly and launch the app?
Here's what I'm using for node and npm:
➜ test_repo npm -v
7.6.0
➜ test_repo node -v
v15.11.0
I found a (very) hacky solution for now. I'm no expert with npm, but what I discovered is that npm scripts refer to dependencies indirectly - for example, having a command that says
"test": "jest"
tells npm to look in node_modules/.bin for a file called jest and to run that.
the issue is something to do with npm understanding this. But it's possible to get around that by putting the address of each dependency in the script, for example:
"test" "node_modules/.bin/jest"
I was able to get things to build this way. If someone comes along with a better answer, please show me up :P
I am using react native and Expo. I am unable to build new app because after I use expo init appName it shows the following error.
Heres the full message:
📦 Using npm to install packages. You can pass --yarn to use Yarn instead.
√ Downloaded and extracted project files.
× Something when wrong installing JavaScript dependencies. Check your npm logs. Continuing to initialize the app.
✅ Your project is ready!
To run your project, navigate to the directory and run one of the following npm commands.
- cd Scanner
- npm start # you can open iOS, Android, or web from here, or run them directly with the commands below.
- npm run android
- npm run ios # requires an iOS device or macOS for access to an iOS simulator
- npm run web
I tried multiple times to create a blank project, also tried npm install to install failed/not downloaded libraries and continue after failure but it showed another error:
npm ERR! code Z_BUF_ERROR
npm ERR! errno -5
npm ERR! zlib: unexpected end of file
also tried npm cache verify that showed cache is ok Content verified: 3562 (252580364 bytes).
So, How can I solve this issue?
Problems related to npm installation are very common If you do any mistake in early installation, but is avoided. Learn more about npm tree.
Steps worked for me are :
npm cache clean --force
npm cache verify
npm -g uninstall expo-cli --save
npm install expo-cli --global
expo init app-name
cd app-name
npm start
Always run as administrator if working on Windows and in root directory.
The solutions above didn't work for me but if you use 'npm install' in the directory of the app you get a clue that you shuold try 'npm install --force'
err message
You should have all these files folders and files at the start of the project otherwise not all the dependencies have been installed which is why we were getting the problem.folder structure
After you have added --force to npm install you have all the dependencies installed. Now you can run the app with npm start.
Unfortunately, all the solutions described above didn't work on my machine...
Here is my latest solution for this problem...
This worked 100% on my machine...
Use npm i -g expo-cli
This will automatically add the required packages and also remove the unnecessary ones.
Yes, surely, you don't need to uninstall and re-install it again.
Just follow my steps.
And, you can create your expo project using expo init.
I hope my solution will help you out from this annoying problem....
I just did npm install and it worked for me, but I had do that every time I create a new expo project.
I also encountered this problem, and finally found that it was the problem of react native cli，I installed the latest version of react native cli，Expo is back to normal
This Error is regarding to the git account. expos need a git account to setup react native project
If you are using windows you need to install git in your local PC
after that open your Terminal and type this command
git config --global user.name "your_username"
git config --global user.email "your_email_address#example.com"
after that clone any github project to your local computer. it will ask to login to Github
after all these steps try expo init <projectname>
The simple way to settle that error is by using "expo-cli init app-name" instead of "expo init app-name".
I tried and worked perfectly for me. Hope it will help you guys.
i have faced a similar problem and running yarn set version 1.22.1 fix it
Run the Command Prompt as an administrator. And run the following command:
npx create-expo-app AwesomeProject
I followed the tutorial in the link here https://facebook.github.io/react-native/docs/getting-started.html#content . As it turns out, npm 5 is not supported yet. I tried installing npm 4 but, it is not working either. Stuck in the first page of the tutorial, when I run npm start, I am getting a bunch of errors too. Literally stuck, nowhere else to turn. Before voting down the question, kindly note that I am a mobile developer working with andorid and Ios having no previous knowledge about web technologies. Thanks
These are the steps I followed
npm install -g create-react-native-app
It was successfull, then,
create-react-native-app AwesomeProject
for this line, I got the following error
*******************************************************************************
ERROR: npm 5 is not supported yet
*******************************************************************************
It looks like you're using npm 5 which was recently released.
Create React Native App doesn't work with npm 5 yet, unfortunately. We
recommend using npm 4 or yarn until some bugs are resolved.
You can follow the known issues with npm 5 at:
https://github.com/npm/npm/issues/16991
*******************************************************************************
Then I ran the command
cd AwesomeProject
Afterwards I ran
npm start
for which I got the error
npm ERR! missing script: start
npm ERR! A complete log of this run can be found in:
npm ERR! /home/jayakrishnan/.npm/_logs/2017-07-25T08_13_06_277Z-debug.log
I tried using Yarn But didnt work
npm i -g npm#4.6.1 - then install create-react-native-app again and create a project.
Solution with Yarn:
First install Yarn
yarn global add create-react-native-app
cd AwesomeProject
yarn start
npm install -g npm#4 Use this to downgrade, Also use sudo with the commands, sometime it does give permission to write error and skips the installation
Try putting more information about the error so we can help, or steps to reproduce it.
One thing to try is to instead of using npm, use yarn. Install yarn with brew install yarn if you are on mac and do the same steps in the getting-started guide, except for use yarn run ios to start app in ios simulator.
I just tried with a fresh setup that this is working perfectly fine.
Reference to yarn https://yarnpkg.com/en/