Unable to reach Expo servers. Falling back to using the cached dependency map (bundledNativeModules.json) from the package "expo" installed in your project.
Instead of writing npm start use expo start
This could be a network error. Try running the project with the offline flag: npx expo start --offline
if you are using expo cli -g 46 above
run:
npx expo start
Please consider this, and/or clarify the question.
Creating an expo app:
npx create-expo-app my-app
Navigating into project folder:
cd my-app
Launching an expo application:
expo start
Related
Not able to create react app using npx create-react-app my-app
Have you tried running your terminal and/or the command as admin? Doing a rudimentary Google search gives a lot of results claiming it has something to do with antivirus software.
I myself solved this problem,The above screenshot contains the error of log in the cache and in that error we need to make it global for that we need to use the following command.
npm config set cache "C:\Users\Nvsatya\AppData\Roaming\npm-cache" --global
by this command the error got solved and now the npx create-react-app my-app is working.
Thankyou
Months ago, on my home PC I installed nodejs, react, etc., and got various tutorial sample projects working.
Now I’m remoting to my up-to-date Windows 10 work PC to install everything.
I’ve done the setup steps from the Traversy Media React Crash Course tutorial (5 stars), also just now, to double-check, watched the 1-minute video and reviewed the simple instructions at https://www.techomoro.com/how-to-install-and-setup-a-react-app-on-windows-10/ .
So I’ve installed nodejs from https://nodejs.org/en and downloaded react-0.14.3.zip (but there’s not an .msi installer, just a build folder and an examples folder… am I forgetting or missing something?)
Installed create-react-app globally:
PS C:\users\molin\dev\myapp> npm install -g create-react-app
…which spewed out…
C:\Users\molin\AppData\Roaming\npm\create-react-app -> C:\Users\molin\AppData\Roaming\npm\node_modules\create-react-app\index.js
[+ sign] create-react-app#4.0.1 updated 1 package in 7.639s
When I’m a level above the myapp folder and do either of these:
npx create-react-app .
npx create-react-app myapp
…or if I’m in the myapp folder and do either of these:
npx create-react-app myapp
npx create-react-app .
… I get the error:
Command failed: create-react-app spawn EPERM
Per a suggestion on a board, I ran this and retried, but no joy.
npm cache clean --force
I even rebooted and tried again.
No events show on the Window Event viewer.
Is this a permissions error on my work PC?
Thank you for any advice!
Reinstall react app globally
npm i -g create-react-app
Recreate your app -
create-react-app
(maybe this will help)
Got it working, jeez. In case this helps someone...
Opened VS Code; Undoubtedly didn't need to do this, but did File >
Open the folder myapp (which contained nothing yet)
Opened the VS Code terminal, cd .. to go a level up above the myapp folder;
npx create-react-app myappNEW , IOW a folder that didn't exist yet.
If I did that last command for "myapp", it gave the spawn error.
I had typed the following, but then tried it and it failed, so this is not the case: Conceivably, when doing this from the powershell, I didn't try npx (rather than npm) with a non-existent folder name.
No need for any other package install in your PC or System.
Install node
npm i node
create project
npx create-react-app project_name --template all
Please try these commands on your terminal:-
npx create-react-app my-app
cd my-app
npm start
I hope this will help you out.
You can also visit https://reactjs.org/docs/create-a-new-react-app.html for your reference.
I'm trying to create a new ReactJS project by typing on cmd:
create-react-app new_project
But the cmd appear like this for hours and no change:
Creating a new React app in...
My node version: v10.16.3.
My npm version: 6.12.0.
Please help me to solve this problem. Thanks.
Try
npm install npm#latest -g
and run again
Similar problem's here
create-react-app hangs when initializing an app
It seems create-react-app not installed globally properly.
Try this
npm install -g create-react-app
the restart you system.
Now try using the command you used.
create-react-app new_project
Problem:
I have create react native application. There I am using react-native-maps. When bundle is building it laves this error on the console.
Unable to resolve "./lib/components/MapHeatmap.js" from
"node_modules\react-native-maps\index.js"
I look for a solution but I was unable to do so. And I have not any clue for what should do for this error.Thank you
i had the same error just now, try sudo npm uninstall react-native-maps and install it again with expo comand (if you are using expo).
I was also facing the same issue in react native (expo)
For me clearing the cache worked...
just type this command
expo start -c
in cli project run this command on your project
npm cache clean --force
then reinstall the node module ......
then npm install
I'm trying to create a React project in WebStorm 2016.3.1
It's asking me for a create-react-app but I have no idea what that is and I can't find any reference on Google.
What is it and where can I find the value?
You need to install create-react-app npm module, before you use this feature.
npm install -g create-react-app
You can read more about this feature on the official release blog of WebStorm.
Excerpt from the documentation :
Make sure that you have create-react-app installed globally on your computer, for that run npm install -g create-react-app. Then to start your new project, double click on the start task in the npm tasks tool window to run it. That’s it!
I had ie installed create-react-app globally using yarn and webstorm failed to find it. Then I used npm, not to mention globally and its working like a charm.
TL;DRNo need to install anything. Just enter npx create-react-app in the create-react-app field & it should work like a pycharm, I mean charm :)
Side note: npx is pre-bundled with npm since npm version 5.2.0.
I created webStrom react app following this steps.
Download node.js
Open command line console and type "npm install -g create-react-app"
Create react app project from web-storm.
Make sure you provided the correct file path of create-react-app , by default it is
installed in ~\AppData\Roaming\npm\node_modules\create-react-app
use
npm start: to start development server
If you are using asdf or any other tool to manage multiple versions of nodejs, you will need to set up the path to create-react-app manually
I'm on mac, so for me the path was
/Users/<USER>/.asdf/installs/nodejs/12.16.2/.npm/lib/node_modules/create-react-app