I am trying to learn React and I am using a private repo to start with it.
I run yarn start in the directory of the repo but I get the error message:
yarn run v1.13.0
error Command "start" not found.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
I have both node and yarn installed.
For node:
v10.15.0
node is /usr/local/bin/node
For yarn:
1.13.0
yarn is /usr/local/bin/yarn
I tried to reinstall both node and yarn but I get the same error message. moreover I tried to remove the yarn chance via yarn cache clean but nothing seems to work.
The package.json contains the following:
{
"name": "02-Manipulating-Strings",
"version": "1.0.0",
"author": "ssaunier",
"license": "UNLICENSED",
"private": true,
"devDependencies": {
"eslint": "^4.7.2",
"eslint-config-airbnb-base": "^12.0.0",
"eslint-plugin-import": "^2.7.0",
"jest": "^21.1.0"
},
"scripts": {
"test": "(eslint lib || true) && jest"
}
}
The directory is organised in the following way:
tk421
5,6956 gold badges23 silver badges34 bronze badges
asked Jan 27, 2019 at 21:47
3
There is no start command inside the scripts of the package.json file.
"scripts": {
"start": "some command to be run", // you need to add this line
"test": "(eslint lib || true) && jest"
}
Maybe you want to run the test command instead — npm test / yarn test?
answered Jan 27, 2019 at 22:01
Tsvetan GanevTsvetan Ganev
7,8913 gold badges29 silver badges42 bronze badges
3
Just run
yarn add react-scripts
answered Oct 4, 2019 at 20:03
1
Solved it thanks to the insight of the user: Tsvetan Ganev.
I was trying to run a command that it is not in my scripts. Specifically, yarn start is not in the scripts part of the file package.json.
To solve the issue I added the following line in scripts
"start": "webpack-dev-server --mode development",
answered Jan 28, 2019 at 19:23
MagofocoMagofoco
4,8936 gold badges31 silver badges72 bronze badges
1
I got the same error message «start» command not found. My issue got resolved by following the below mentioned steps.
-open the folder in which you want to create the app using terminal then type these commands:
- npm uninstall -g create-react-app
- npx create-react-app FolderName
(This will automatically install the latest create-react-app version)
-Then run the command yarn start and it will work.
answered Jul 18, 2020 at 8:54
I had this problem. I figured the best way is this.
- npm i -g create-react-app
- create-react-app my-react-app //or whatever you want your project to be
- cd my-react-app
- yarn start
answered Jul 22, 2020 at 12:43
Med SepMed Sep
3381 silver badge6 bronze badges
You can also try to run first npm install and then npm run or first yarn and then yarn start
answered Nov 22, 2019 at 19:29
MagofocoMagofoco
4,8936 gold badges31 silver badges72 bronze badges
2
I had the same issue start command not found.
I followed below instruction to recreate react app
. Go to your parent folder in cmd
. Type yarn add create-react-app
. And yarn create-react-app FolderName
After installing yarn start will work.
answered Jun 28, 2020 at 18:23
AnkurAnkur
1516 bronze badges
Well, I was getting this error cause I was dumb Not going inside the main project folder.so it actually not able to find .json file too😁
answered Sep 9, 2021 at 12:34
3
Adding this to package.json worked for me
"scripts": {
"start": "expo start",
"android": "expo start --android",
"ios": "expo start --ios",
"web": "expo start --web",
"eject": "expo eject"
},"devDependencies": {
"babel-preset-expo": "^7.0.0"
},
answered Oct 19, 2019 at 6:17
If you are using create-react-app and encountered this error, chances are you did not install create-react-app successfully.
Try removing globally installed create-create-app as explained below.
Template not provided using create-react-app
answered Feb 8, 2020 at 5:58
ohkts11ohkts11
2,4512 gold badges18 silver badges17 bronze badges
check your package.json that has «start» scripts.
if you just have dependency list, make sure you have the following on the package.jons
"devDependencies": {
"@theia/cli": "next"
},
"scripts": {
"prepare": "yarn run clean && yarn build && yarn run download:plugins",
"clean": "theia clean",
"build": "theia build --mode development",
"start": "theia start --plugins=local-dir:plugins",
"download:plugins": "theia download:plugins"
},
"theiaPluginsDir": "plugins",
"theiaPlugins": {
"vscode-builtin-css": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/css-1.39.1-prel.vsix",
"vscode-builtin-html": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/html-1.39.1-prel.vsix",
"vscode-builtin-javascript": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/javascript-1.39.1-prel.vsix",
"vscode-builtin-json": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/json-1.39.1-prel.vsix",
"vscode-builtin-markdown": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/markdown-1.39.1-prel.vsix",
"vscode-builtin-npm": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/npm-1.39.1-prel.vsix",
"vscode-builtin-scss": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/scss-1.39.1-prel.vsix",
"vscode-builtin-typescript": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/typescript-1.39.1-prel.vsix",
"vscode-builtin-typescript-language-features": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/typescript-language-features-1.39.1-prel.vsix"
}
}
otherwise run this on the folder where package.json is
error Command «start» not found.
yarn run theia start /home --hostname 0.0.0.0 --port 8080
theia should start on port 8080 minimally.
answered Mar 29, 2020 at 14:32
If you get error Command "start" not found. after creating new project using create-react-app you most probably would have created the app using npm.
To do it correctly delete the directory of the project and recreate the project using yarn with the following command
yarn create react-app my-app
After that yarn start works perfectly fine.
answered Jan 9, 2021 at 5:45
i got the same issue. it cusses you have installed packages in wrong directory.
in cmd terminal:-(D:PROJECT)=> my cmd file path shows
D:PROJECTSnpx create-react-app app-react
(when you enter this command it will create new file named app-react . then you have to go into the app-react file . use this command to go to the that file «cd app-react» then enter. you will see cmd path )
D:PROJECTScd app-react
D:PROJECTSapp-react
then install other yarn packges
D:PROJECTSapp-reactyarn add @chakra-ui/react @emotion/react@^11 @emotion/styled@^11 framer-motion@^4
D:PROJECTSapp-reactyarn add react-icons
D:PROJECTSapp-reactyarn add react-router-dom
then yarn start
D:PROJECTSapp-reactyarn start
if it is won’t open check yarn package installed using this command
D:PROJECTSapp-reactyarn -version
1.22.10
for install yarn
npm install --global yarn
answered Jul 26, 2021 at 0:05
1
just run following commands:
- npm uninstall -g create-react-app
- npx create-react-app FolderName
answered Mar 30, 2022 at 19:15
I had a similar problem while I have "start" script in my package.json. Eventually, I figured out that I had not saved the package.json, so I got this error. Obviously, after saving the package.json the problem was resolved.
answered Aug 31, 2019 at 8:47
AbdollahAbdollah
4,1993 gold badges28 silver badges47 bronze badges
0
This issue happens when file «package.json» will gets deleted or changed. Please check your
«package.json» file.
answered Oct 15, 2019 at 8:58
It may sound silly, but I was having this same problem and all I did was close the program (vscode), and reopen it. I made sure it was inside the correct project folder (web) and did the process again. It worked. In my case it was just a lack of attention.
I hope your problem is as simple as mine.
Hug!
answered Aug 11, 2020 at 19:16
i solve the problem whit this:
Since create-react-app 3.3.0 it’s not longer recommended to use a global installation of CRA.
However, after following the recommended way, uninstalling CRA globally and using npm,I ran into the following problem for my new React project:
A template was not provided. This is likely because you’re using an outdated version of create-react-app.
It seems like CRA wasn’t properly uninstalled. I had to do the following:
After uninstalling it with npm uninstall -g create-react-app, check whether you still have it «installed» with which create-react-app on your command line. If it returns something (e.g. /usr/local/bin/create-react-app), then do a rm -rf /usr/local/bin/create-react-app to delete manually.
Afterward, I was able to use npx create-react-app my-app with the latest version of CRA where I would have the default template for the src/ folder
answered Oct 16, 2020 at 14:53
Nov 2020
This might happen when you clone a git repo created with an older version of create-react-app or event with another setup.
First install react-scripts as
yarn add react-scripts
Or
npm install react-scripts
Then if having problem with react-scripts, refer to this SO thread.
answered Nov 2, 2020 at 5:51
DevLoverUmarDevLoverUmar
10.3k10 gold badges60 silver badges92 bronze badges
Firstly, you can try
npm install
then
You can also try to run first npm install and then npm run or first yarn and then yarn start
answered Feb 8, 2021 at 18:45
I have solved my issues with the following command. Try this command, hope you will get rid of the problems.
npm run start
answered Apr 27, 2021 at 5:30
ShipluShiplu
4506 silver badges13 bronze badges
I also face this error but in my case I think, I have done all the above steps but the error still remaining the last thing I did in my main node_module/.bin/ folder I saw there are two dependencies one is create-react-app it fine but another one is creat-app-react so I deleted this dependency and also remove from my package.json file.
So now yarn start is working perfectly.
Leo
1,7801 gold badge12 silver badges20 bronze badges
answered Aug 24, 2021 at 5:11
1
just run command
corepack disable
if you ran the following command before
corepack enable
answered Mar 26, 2022 at 10:25
1
I was outside the project. So I type cd myProject and than yarn run
answered Apr 9, 2022 at 19:42
JavaJava
2,3391 gold badge10 silver badges22 bronze badges
{
test: /.scss$/,
include: [/vue-components|views/],
use: [
'vue-style-loader',
'css-loader',
'sass-loader',
],
},
put this in webpack.config.js in module object.
answered Apr 16, 2022 at 4:48
1
one of the reasons behind this is watch if you are in the right directory type cd your_file_name then type npm run dev
answered Apr 23, 2022 at 13:02
I had the same issue. Just run
npm install --global yarn
answered May 14, 2022 at 13:55
1
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "jest",
"eject": "react-scripts eject" },
I found that when I added this into the scripts section package.json dependency; it worked! This way, you’ll get the https://localhost:3000 instead of using the 8080 port.
answered Jul 16, 2022 at 13:47
I had this problem and just solved it! Super easy, I hope it helps you:
The problem: «node_modules» was duplicated. You may have accidentally downloaded a duplicated «node_modules» folder when calling yar originally.
Go to «User/#yourname/node_modules» and delete the folder.
answered Jul 19, 2022 at 16:01
yarn run v1.12.3
Do you want to request a feature or report a bug?
bug
Does anyone know why «yarn start» isn’t working? I’ve tried to follow the instructions for error recovery, but no luck.
Branch ‘master’ set up to track remote branch ‘master’ from ‘origin’.
Jasons-MBP-2:views-test jkidd$ yarn start
yarn run v1.12.3
$ react-scripts start
There might be a problem with the project dependency tree.
It is likely not a bug in Create React App, but something you need to fix locally.
The react-scripts package provided by Create React App requires a dependency:
«babel-eslint»: «9.0.0»
Don’t try to install it manually: your package manager does it automatically.
However, a different version of babel-eslint was detected higher up in the tree:
/Users/jkidd/Desktop/PROJECTS/REACT_Projects/node_modules/babel-eslint (version: 8.2.6)
Manually installing incompatible versions is known to cause hard-to-debug issues.
If prefer to ignore this check, add SKIP_PREFLIGHT_CHECK=true to an .env file in your project.
That will permanently disable this message but you might encounter other issues.
To fix the dependency tree, try following the steps below in the exact order:
- Delete package-lock.json (not package.json!) and/or yarn.lock in your project folder.
- Delete node_modules in your project folder.
- Remove «babel-eslint» from dependencies and/or devDependencies in the package.json file in your project folder.
- Run npm install or yarn, depending on the package manager you use.
In most cases, this should be enough to fix the problem.
If this has not helped, there are a few other things you can try:
-
If you used npm, install yarn (http://yarnpkg.com/) and repeat the above steps with it instead.
This may help because npm has known issues with package hoisting which may get resolved in future versions. -
Check if /Users/jkidd/Desktop/PROJECTS/REACT_Projects/node_modules/babel-eslint is outside your project directory.
For example, you might have accidentally installed something in your home folder. -
Try running npm ls babel-eslint in your project folder.
This will tell you which other package (apart from the expected react-scripts) installed babel-eslint.
If nothing else helps, add SKIP_PREFLIGHT_CHECK=true to an .env file in your project.
That would permanently disable this preflight check in case you want to proceed anyway.
P.S. We know this message is long but please read the steps above 
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
Jasons-MBP-2:views-test jkidd$ npm install
npm WARN saveError ENOENT: no such file or directory, open ‘/Users/jkidd/Desktop/PROJECTS/REACT_Projects/package.json’
npm notice created a lockfile as package-lock.json. You should commit this file.
npm WARN enoent ENOENT: no such file or directory, open ‘/Users/jkidd/Desktop/PROJECTS/REACT_Projects/package.json’
npm WARN @reach/router@1.2.1 requires a peer of react@15.x || 16.x || 16.4.0-alpha.0911da3 but none is installed. You must install peer dependencies yourself.
npm WARN @reach/router@1.2.1 requires a peer of react-dom@15.x || 16.x || 16.4.0-alpha.0911da3 but none is installed. You must install peer dependencies yourself.
npm WARN create-react-context@0.2.3 requires a peer of react@^0.14.0 || ^15.0.0 || ^16.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN gatsby@2.0.46 requires a peer of react@^16.4.2 but none is installed. You must install peer dependencies yourself.
npm WARN gatsby@2.0.46 requires a peer of react-dom@^16.4.2 but none is installed. You must install peer dependencies yourself.
npm WARN gatsby-react-router-scroll@2.0.1 requires a peer of react@^0.14.0 || ^15.0.0 || ^16.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN gatsby-react-router-scroll@2.0.1 requires a peer of react-dom@^0.14.0 || ^15.0.0 || ^16.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN react-hot-loader@4.3.12 requires a peer of react@^15.0.0 || ^16.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN REACT_Projects No description
npm WARN REACT_Projects No repository field.
npm WARN REACT_Projects No README data
npm WARN REACT_Projects No license field.
audited 59323 packages in 9.629s
found 0 vulnerabilities
Jasons-MBP-2:views-test jkidd$ yarn start
yarn run v1.12.3
error Command «start» not found.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
Jasons-MBP-2:views-test jkidd$ yarn install
yarn install v1.12.3
info No lockfile found.
warning package-lock.json found. Your project contains lock files generated by tools other than Yarn. It is advised not to mix package managers in order to avoid resolution inconsistencies caused by unsynchronized lock files. To clear this warning, remove package-lock.json.
[1/4] 🔍 Resolving packages…
[2/4] 🚚 Fetching packages…
[3/4] 🔗 Linking dependencies…
[4/4] 📃 Building fresh packages…
success Saved lockfile.
✨ Done in 4.09s.
Jasons-MBP-2:views-test jkidd$ yarn start
yarn run v1.12.3
error Command «start» not found.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
Jasons-MBP-2:views-test jkidd$ npm start
npm ERR! path /Users/jkidd/Desktop/PROJECTS/REACT_Projects/package.json
npm ERR! code ENOENT
npm ERR! errno -2
npm ERR! syscall open
npm ERR! enoent ENOENT: no such file or directory, open ‘/Users/jkidd/Desktop/PROJECTS/REACT_Projects/package.json’
npm ERR! enoent This is related to npm not being able to find a file.
npm ERR! enoent
npm ERR! A complete log of this run can be found in:
npm ERR! /Users/jkidd/.npm/_logs/2018-11-22T04_19_18_839Z-debug.log
Jasons-MBP-2:views-test jkidd$ npm install -g yarn
/Users/jkidd/Desktop/PROJECTS/REACT_Projects/views-test/…/bin/yarnpkg -> /Users/jkidd/Desktop/PROJECTS/REACT_Projects/views-test/…/lib/node_modules/yarn/bin/yarn.js
/Users/jkidd/Desktop/PROJECTS/REACT_Projects/views-test/…/bin/yarn -> /Users/jkidd/Desktop/PROJECTS/REACT_Projects/views-test/…/lib/node_modules/yarn/bin/yarn.js
- yarn@1.12.3
added 1 package in 1.078s
Jasons-MBP-2:views-test jkidd$ yarn start
yarn run v1.12.3
error Command «start» not found.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
Jasons-MBP-2:views-test jkidd$
When I try to yarn start in VS code below error message shown. How to fix this?https://ethereum.stackexchange.com/users/2124/ismael
error Command «start» not found. Further, the package.json file is below.
{
«name»: «frontend_base_dapp»,
«version»: «0.1.0»,
«private»: true,
«dependencies»: {
«@openzeppelin/contracts»: «^4.2.0»,
«@testing-library/jest-dom»: «^5.11.4»,
«@testing-library/react»: «^11.1.0»,
«@testing-library/user-event»: «^12.1.10»,
«all»: «^0.0.0»,
«chai»: «^4.3.4»,
«chai-as-promised»: «^7.1.1»,
«ipfs-http-client»: «^52.0.0»,
«react»: «^17.0.2»,
«react-canvas-draw»: «^1.1.1»,
«react-dom»: «^17.0.2»,
«react-redux»: «^7.2.4»,
«react-scripts»: «4.0.3»,
«react-signature-canvas»: «^1.0.3»,
«redux»: «^4.1.1»,
«redux-thunk»: «^2.3.0»,
«styled-components»: «^5.3.0»,
«web-vitals»: «^1.0.1»,
«web3»: «^1.5.1»,
«web3-eth-contract»: «^1.5.2»
},
«scripts»: {
«start»: «react-scripts start»,
«build»: «react-scripts build»,
«test»: «react-scripts test»,
«eject»: «react-scripts eject»
},
«eslintConfig»: {
«extends»: [
«react-app»,
«react-app/jest»
]
},
«browserslist»: {
«production»: [
«>0.2%»,
«not dead»,
«not op_mini all»
],
«development»: [
«last 1 chrome version»,
«last 1 firefox version»,
«last 1 safari version»
]
},
«devDependencies»: {
«truffle-plugin-verify»: «^0.5.14»
}
}
asked Feb 27, 2022 at 5:51
shaunshaun
112 bronze badges
When I try to yarn start in VS code below error message shown. How to fix this? error Command «start» not found. package.json file as below if you need to sort out this.
{
«name»: «frontend_base_dapp»,
«version»: «0.1.0»,
«private»: true,
«dependencies»: {
«@openzeppelin/contracts»: «^4.2.0»,
«@testing-library/jest-dom»: «^5.11.4»,
«@testing-library/react»: «^11.1.0»,
«@testing-library/user-event»: «^12.1.10»,
«all»: «^0.0.0»,
«chai»: «^4.3.4»,
«chai-as-promised»: «^7.1.1»,
«ipfs-http-client»: «^52.0.0»,
«react»: «^17.0.2»,
«react-canvas-draw»: «^1.1.1»,
«react-dom»: «^17.0.2»,
«react-redux»: «^7.2.4»,
«react-scripts»: «4.0.3»,
«react-signature-canvas»: «^1.0.3»,
«redux»: «^4.1.1»,
«redux-thunk»: «^2.3.0»,
«styled-components»: «^5.3.0»,
«web-vitals»: «^1.0.1»,
«web3»: «^1.5.1»,
«web3-eth-contract»: «^1.5.2»
},
«scripts»: {
«start»: «react-scripts start»,
«build»: «react-scripts build»,
«test»: «react-scripts test»,
«eject»: «react-scripts eject»
},
«eslintConfig»: {
«extends»: [
«react-app»,
«react-app/jest»
]
},
«browserslist»: {
«production»: [
«>0.2%»,
«not dead»,
«not op_mini all»
],
«development»: [
«last 1 chrome version»,
«last 1 firefox version»,
«last 1 safari version»
]
},
«devDependencies»: {
«truffle-plugin-verify»: «^0.5.14»
}
}
Ошибка: запуск пряжи — ошибка Команда «старт» не найдена
Я пытаюсь изучить React, и я использую частное репо, чтобы начать с него.
Я запускаю yarn start в каталоге репозитория, но получаю сообщение об ошибке:
yarn run v1.13.0
error Command "start" not found.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
У меня установлены и узел, и пряжа.
Для узла:
v10.15.0
node is /usr/local/bin/node
Для пряжи:
1.13.0
yarn is /usr/local/bin/yarn
Я попытался переустановить и узел, и пряжу, но получаю то же сообщение об ошибке. кроме того, я пытался удалить шанс пряжи через yarn cache clean, но ничего не работает.
Package.json содержит следующее:
{
"name": "02-Manipulating-Strings",
"version": "1.0.0",
"author": "ssaunier",
"license": "UNLICENSED",
"private": true,
"devDependencies": {
"eslint": "^4.7.2",
"eslint-config-airbnb-base": "^12.0.0",
"eslint-plugin-import": "^2.7.0",
"jest": "^21.1.0"
},
"scripts": {
"test": "(eslint lib || true) && jest"
}
}
Каталог организован следующим образом:
Перейти к ответу
Данный вопрос помечен как решенный
Ответы
21
Внутри скриптов файла start нет команды package.json.
"scripts": {
"start": "some command to be run", // you need to add this line
"test": "(eslint lib || true) && jest"
}
Может быть, вместо этого вы хотите запустить команду test — npm test/yarn test?
Решил благодаря проницательности пользователя: Цветан Ганев.
Я пытался запустить команду, которой нет в моих сценариях. В частности, yarn start отсутствует в части scripts файла package.json.
Чтобы решить эту проблему, я добавил следующую строку в scripts.
"start": "webpack-dev-server --mode development",
У меня была похожая проблема, когда у меня был скрипт «start» в моем package.json. В конце концов я понял, что не сохранил package.json, и получил эту ошибку. Очевидно, что после сохранения package.json проблема была решена.
Просто беги
yarn add react-scripts
Эта проблема возникает, когда файл «package.json» удаляется или изменяется. Пожалуйста, проверьте ваш
файл «package.json».
Добавление этого в package.json сработало для меня
"scripts": {
"start": "expo start",
"android": "expo start --android",
"ios": "expo start --ios",
"web": "expo start --web",
"eject": "expo eject"
},"devDependencies": {
"babel-preset-expo": "^7.0.0"
},
Вы также можете попробовать запустить сначала npm install, а затем npm run или сначала yarn, а затем yarn start.
Если вы используете приложение create-react-app и столкнулись с этой ошибкой, скорее всего, вы не установили приложение create-react-app успешно.
Попробуйте удалить глобально установленное приложение create-create-app, как описано ниже.
Шаблон не предоставляется с помощью приложения create-реагировать
Проверьте свой package.json, в котором есть сценарии запуска.
если у вас есть только список зависимостей, убедитесь, что в package.jons есть следующее:
"devDependencies": {
"@theia/cli": "next"
},
"scripts": {
"prepare": "yarn run clean && yarn build && yarn run download:plugins",
"clean": "theia clean",
"build": "theia build --mode development",
"start": "theia start --plugins=local-dir:plugins",
"download:plugins": "theia download:plugins"
},
"theiaPluginsDir": "plugins",
"theiaPlugins": {
"vscode-builtin-css": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/css-1.39.1-prel.vsix",
"vscode-builtin-html": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/html-1.39.1-prel.vsix",
"vscode-builtin-javascript": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/javascript-1.39.1-prel.vsix",
"vscode-builtin-json": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/json-1.39.1-prel.vsix",
"vscode-builtin-markdown": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/markdown-1.39.1-prel.vsix",
"vscode-builtin-npm": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/npm-1.39.1-prel.vsix",
"vscode-builtin-scss": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/scss-1.39.1-prel.vsix",
"vscode-builtin-typescript": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/typescript-1.39.1-prel.vsix",
"vscode-builtin-typescript-language-features": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/typescript-language-features-1.39.1-prel.vsix"
}
}
В противном случае запустите это в папке, где находится package.json
Ошибка Команда «старт» не найдена.
yarn run theia start /home --hostname 0.0.0.0 --port 8080
Theia должна запускаться как минимум на порту 8080.
У меня была такая же проблема, команда запуска не найдена.
Я выполнил приведенную ниже инструкцию, чтобы воссоздать реагирующее приложение.
. Go to your parent folder in cmd
. Type yarn add create-react-app
. And yarn create-react-app FolderName
После установки пряжи старт заработает.
Я получил такое же сообщение об ошибке, что команда «Пуск» не найдена. Моя проблема была решена, выполнив следующие шаги.
-откройте папку, в которой вы хотите создать приложение, используя терминал, затем введите следующие команды:
- npm удалить -g создать-реагировать-приложение
- npx create-реагировать-приложение имя_папки
(Это автоматически установит последнюю версию приложения create-реагировать)
-Тогда запустите команду начало пряжи и все заработает.
У меня была эта проблема. Я решил, что лучший способ это.
- npm i -g создать-реагировать-приложение
- create-react-app my-react-app //или то, что вы хотите, чтобы ваш проект был
- компакт-диск мое-реагировать-приложение
- начало пряжи
Это может звучать глупо, но у меня была такая же проблема, и все, что я сделал, это закрыл программу (vscode) и снова открыл ее. Я убедился, что он находится в правильной папке проекта (веб), и повторил процесс. Это сработало. В моем случае это было просто отсутствие внимания.
Я надеюсь, что ваша проблема так же проста, как и моя.
Обнимать!
Я решаю проблему с этим:
Начиная с версии create-react-app 3.3.0 больше не рекомендуется использовать глобальную установку CRA.
Однако, следуя рекомендуемому пути, глобально удалив CRA и используя npm, я столкнулся со следующей проблемой для моего нового проекта React:
Шаблон не предоставили. Вероятно, это связано с тем, что вы используете устаревшую версию приложения create-react-app.
Похоже, что CRA не был правильно удален. Мне пришлось сделать следующее:
После удаления его с помощью npm uninstall -g create-react-app проверьте, установлено ли оно у вас еще с помощью приложения create-react-app в вашей командной строке. Если он что-то возвращает (например, /usr/local/bin/create-react-app), выполните команду rm -rf /usr/local/bin/create-react-app для удаления вручную.
После этого я смог использовать npx create-react-app my-app с последней версией CRA, где у меня был бы шаблон по умолчанию для папки src/.
Ноябрь 2020 г.
Это может произойти, когда вы клонируете репозиторий git, созданный с помощью более старой версии приложения create-react-app или события с другой настройкой.
Сначала установите реагирующие сценарии как
yarn add react-scripts
Или
npm install react-scripts
Затем, если у вас возникли проблемы с реактивными скриптами, обратитесь к эта ТАК нить.
Если вы получаете error Command «start» not found. после создания нового проекта с помощью приложения create-react-app, вы, скорее всего, создали приложение с помощью npm.
Чтобы сделать это правильно, удалите каталог проекта и заново создайте проект с помощью пряжи с помощью следующей команды
yarn create react-app my-app
После этого запуск пряжи работает отлично.
Во-первых, вы можете попробовать
npm install
Тогда
Вы также можете попробовать запустить сначала npm install, а затем npm run или сначала пряжу, а затем пряжу запустить
Я решил свои проблемы с помощью следующей команды. Попробуйте эту команду, надеюсь, вы избавитесь от проблем.
npm run start
У меня такая же проблема. это говорит о том, что вы установили пакеты в неправильный каталог.
В терминале cmd:-(D:PROJECT)=> мой путь к файлу cmd показывает
D:PROJECTSnpx create-react-app app-react
(когда вы вводите эту команду, она создает новый файл с именем app-react. Затем вам нужно перейти в файл app-react. Используйте эту команду, чтобы перейти к этому файлу «cd app-react», затем введите. вы увидите cmd дорожка )
D:PROJECTScd app-react
D:PROJECTSapp-react
Затем установите другие пакеты пряжи
D:PROJECTSapp-reactyarn add @chakra-ui/react @emotion/react@^11 @emotion/styled@^11 framer-motion@^4
D:PROJECTSapp-reactyarn add react-icons
D:PROJECTSapp-reactyarn add react-router-dom
Затем начало пряжи
D:PROJECTSapp-reactyarn start
Если он не открывается, проверьте пакет пряжи, установленный с помощью этой команды
D:PROJECTSapp-reactyarn -version
1.22.10
Для установки пряжи
npm install --global yarn
Я также сталкиваюсь с этой ошибкой, но в моем случае я думаю, что я сделал все вышеперечисленные шаги, но ошибка все еще остается последней, что я сделал в своей основной папке node_module/.bin/. Я видел, что есть две зависимости: одна — create-react-app, все в порядке, а другая — creat-app-react. поэтому я удалил эту зависимость, а также удалил ее из моего файла package.json.
Так что теперь запуск пряжи работает отлично.
Ну, я получал эту ошибку, потому что я был тупым. Не заходил в основную папку проекта. Так что на самом деле он тоже не мог найти файл .json ?
Другие вопросы по теме
There are a lot of queries by people asking «How to fix the command not found yarn» errors on forums. If you are also getting the same error, I will help you with all possible answers to get this issue solved. This Yarn command not found error may occur if you have not installed the package correctly or not set up the path variable. Let’s deep dive more into these fixes in this post.
Solutions provided in this post will also help you to fix the below-mentioned errors because the reasons are more or less the same.
- yarn command not found windows
- zsh command not found yarn
- start command not found yarn
- vue command not found yarn
- bash: sequelize: command not found yarn
- expo command not found after using yarn
- bash: /usr/local/bin/yarn No such file for directory
Below mentioned are the possible reasons, why you get a «command not found yarn» error in your system.
- You have installed Yarn correctly
- You have not setup the Yarn path variable rightly
- PC reboot is missing after yarn package installation
- Re-installation of Yarn package is required
All these above-mentioned issues can be fixed if you know the right way to install Yarn on your system. Let me first show you the correct way on how to install yarn and set up the path variable in different operating systems.
Table of Contents
- 1 Solution1 — Fix «command not found yarn» error by installing Yarn correctly
- 2 Solution2 — Make sure you setup the path variable correctly in your profile
- 3 Solution3 — Reboot the PC at least once after yarn installation to fix command not found yarn error
- 4 Solution4 — Re-install Yarn package, especially in case of macOS
- 5 Solution5 — Setup the Yarn prefix
- 6 How to check Yarn version
- 7 Frequently asked questions
- 8 End note
Solution1 — Fix «command not found yarn» error by installing Yarn correctly
It is very important to know the right way to install yarn in your system. If you will miss any step, it may result in the yarn not found error.
Step1.1- Check if you have Yarn installed already
Check if you have installed already using the following commands.
- If you use npm package manger
$ sudo npm -g list
- Or if you uses Ubuntu APT package manager
$ sudo apt list --installed | grep -i yarn
- In case of macOS
$ brew list
If you have a yarn package already installed then skip to solution 2 otherwise follow solution1 to fix the command not found yarn error.
Step1.2 — Install Yarn using «NPM» package manager
Developers of yarn recommend installing the «Yarn» package using the npm package manager.
- To install latest version 3 of yarn globally on your system run following command. This command applies to Ubuntu, Windows and macOS.
npm install -g yarn
To install a specific version use @package name
npm install -g yarn@version
- Prefix sudo, in case of Ubuntu or Linux operating system
$ sudo npm install -g yarn
If you get «npm command not found error». It means npm package manager is not installed in your system. Follow this article on how to fix npm command not found error and come back.
- Check
yarnversion
$ yarn --version
Step1.3 — Install Yarn using «APT» package manager
If you use Ubuntu and want to install yarn using the «apt» package manager, then follow these steps —
Step1.3.1 — Configure the yarn repository first
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
If you get a curl not found error, then install curl with apt install curl command.
Then run the following command after curl command
echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
Step1.3.2 — Update repository and install Yarn
sudo apt update && sudo apt install yarn
If you get errors due to «cmdtest«, remove it first
$ sudo apt remove cmdtest
- If you are using
nvmyou can avoid thenodeinstallation by doing:
$ sudo apt update && sudo apt install --no-install-recommends yarn
Note: In some distros nodejs is used instead of node, yarn might complain about node not being installed. As a workaround for this is just add an alias in your .bashrc file, like so: alias node=nodejs. This will point yarn to whatever version of node you decide to use.
Step1.4 — In case of macOS use script to install yarn
The easiest way to install yarn in macOS is via script
curl -o- -L https://yarnpkg.com/install.sh | bash
In case of any specific version, replace [version] with the yarn version name.
curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version [version]
In case of issues or alternate installation methods, you can check this link on the installation of Yarn in macOS.
Let’s move to the very important step of setting up path variable after yarn package installation
Solution2 — Make sure you setup the path variable correctly in your profile
Once you are done with yarn package installation, You need to make sure you have set up the yarn path correctly in your profile or environment variables.
Follow these steps depending upon your operating system to set up the Yarn path correctly.
Yarn bin directory path may differ with each installation and you must check the path first before setting it up. So that you won’t find a command not found error while running yarn.
Step2.1 — Check for Yarn global bin path
$ yarn global bin
Add the resulted path to your profile file. It may be .bashrc, .profile, .zshrc or .bash_profile in your case.
For example, I have added the following command to my .bashrc file to make yarn work.
$ export PATH="$PATH:$HOME/.config/yarn/global/node_modules/.bin"
- Reload .bashrc profile file
$ source ~/.bashrc
- In case of macOS
Edit .zshrc file and add the following path
export PATH="$PATH:`yarn global bin`"
Or you can also provide an absolute path like in the .zshrc file —
$ export PATH="$PATH:$HOME/.config/yarn/global/node_modules/.bin"
Then reload ~/.zshrc file
$ source ~/.zshrc
Note* In case you don’t have .bashrc, .profile or .zshrc file in your home directory. You can create one by «touch» command, vi or nano editor.
- In case of Windows, edit environment variable by following method and replace path «c:usersyourusernameappdatalocalyarnbin» with your yarn global path.
Go to System Properties > Advanced > Environment Variables > selectPATHthe click Edit > then append and not replace with;c:usersYOURUSERNAMEappdatalocalyarnbin.
Solution3 — Reboot the PC at least once after yarn installation to fix command not found yarn error
It has been seen that if you don’t restart your PC after Yarn installation and setup of a path variable. Sometimes you may get a «command not found yarn» issue. So always reboot your system to complete the installation of Yarn.
Solution4 — Re-install Yarn package, especially in case of macOS
If you have installed the Yarn package using Brew and still you are getting a command not found yarn error. You should try reinstalling it once. it has been seen for many users, it has resolved the problem.
- To install yarn globally using homebrew, if you are not using npm package manager.
$ brew install -g yarn
- To reinstall yarn, in case it’s corrupted or
yarn global bincommand is not working.
$ brew reinstall yarn
Solution5 — Setup the Yarn prefix
Sometimes, setting up the path variable doesn’t work, so may you need to set up the Yarn prefix. Follow these steps
Step5.1 — Find your global bin path of yarn
$ yarn global bin
Example, i have got /home/dev/.yarn/bin
Step5.2 — Set yarn prefix
$ yarn config get prefix
If you get no output after running above mentioned command, then run the following command to set prefix with path found with yarn global bin command.
$ yarn config set prefix /home/dev/.yarn
Step5.3 — Setup your .bash_profile, bashrc, .profile or .zshrc file
Add the following lines to your profile
export PATH="$PATH:`yarn global bin`"
Step5.4 — Restart your shell once with bash -l or zsh command
Restart your shell with the bash -l or zsh command. Alternatively close and open your terminal again.
How to check Yarn version
To check yarn version run —
$ yarn --version
Frequently asked questions
Q1- What is the command to install yarn?
To install yarn using the npm package manager, which is the best way to install, run —
> npm install -g yarn
or in the case of Ubuntu or Linux, use sudo
$ sudo npm install -g yarn
Q2- How do I update the latest version of Yarn?
To install the latest version or to update yarn using npm. Run
> npm install —global yarn
in the case of macOS, if you have not used npm, then run
$ brew upgrade yarn
For more installation and upgrade options visit this link.
Q3- Which is better Yarn or NPM?
The yarn actually defeats NPM in terms of speed and performance. Yarn is secure and can install multiple packages at once compared to NPM, which installs packages one at a time.
Q4- Can Yarn work on Windows?
Yes, Yarn works on Windows pretty well. You can use npm, msi installer or chocolatey method to install yarn on Windows 10 as per your requirement or preference.
Q5- Where is yarn installed in Mac?
Run yarn global bin command to check the location of yarn installation. Yarn installation folder differs depending upon installation method and operating system. The default path of Yarn installation is generally «~/.config/yarn/global«.
End note
I hope after reading this article, you would have solved your «command not found yarn» error and at least one of the solutions has fixed your issue.
Please let me know, which method helps you to get this issue resolved. If you still facing this error, let me know the details, I will try to help you.
Keep Reading!!
Я пытаюсь изучить React и использую частное репо, чтобы начать с него.
Я запускаю yarn start в каталоге репозитория, но получаю сообщение об ошибке:
yarn run v1.13.0
error Command "start" not found.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
У меня есть узел и пряжа.
Для узла:
v10.15.0
node is /usr/local/bin/node
Для пряжи:
1.13.0
yarn is /usr/local/bin/yarn
Я попытался переустановить узел и пряжу, но получаю одно и то же сообщение об ошибке. более того, я попытался удалить шанс пряжи через yarn cache clean, но ничего не помогло.
package.json содержит следующее:
{
"name": "02-Manipulating-Strings",
"version": "1.0.0",
"author": "ssaunier",
"license": "UNLICENSED",
"private": true,
"devDependencies": {
"eslint": "^4.7.2",
"eslint-config-airbnb-base": "^12.0.0",
"eslint-plugin-import": "^2.7.0",
"jest": "^21.1.0"
},
"scripts": {
"test": "(eslint lib || true) && jest"
}
}
Каталог организован следующим образом:
9 ответов
Лучший ответ
В сценариях файла package.json нет команды start.
"scripts": {
"start": "some command to be run", // you need to add this line
"test": "(eslint lib || true) && jest"
}
Может быть, вы хотите вместо этого выполнить команду test — npm test / yarn test?
5
Tsvetan Ganev
27 Янв 2019 в 22:01
Решил это благодаря проницательности пользователя: Цветан Ганев.
Я пытался выполнить команду, которой нет в моих скриптах. В частности, yarn start отсутствует в scripts части файла package.json. Чтобы решить эту проблему, я добавил следующую строку в scripts
"start": "webpack-dev-server --mode development",
3
Magofoco
26 Ноя 2019 в 01:28
Добавление этого в package.json сработало для меня
"scripts": {
"start": "expo start",
"android": "expo start --android",
"ios": "expo start --ios",
"web": "expo start --web",
"eject": "expo eject"
},"devDependencies": {
"babel-preset-expo": "^7.0.0"
},
1
NishantVerma.Me
19 Окт 2019 в 06:17
У меня была похожая проблема, когда в моем package.json есть скрипт "start". В конце концов я понял, что не сохранил package.json, поэтому получил эту ошибку. Очевидно, после сохранения package.json проблема была решена.
0
Abdollah
31 Авг 2019 в 08:47
Проверьте файл package.json, в котором есть сценарии запуска. если у вас просто есть список зависимостей, убедитесь, что у вас есть следующее в package.jons
"devDependencies": {
"@theia/cli": "next"
},
"scripts": {
"prepare": "yarn run clean && yarn build && yarn run download:plugins",
"clean": "theia clean",
"build": "theia build --mode development",
"start": "theia start --plugins=local-dir:plugins",
"download:plugins": "theia download:plugins"
},
"theiaPluginsDir": "plugins",
"theiaPlugins": {
"vscode-builtin-css": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/css-1.39.1-prel.vsix",
"vscode-builtin-html": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/html-1.39.1-prel.vsix",
"vscode-builtin-javascript": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/javascript-1.39.1-prel.vsix",
"vscode-builtin-json": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/json-1.39.1-prel.vsix",
"vscode-builtin-markdown": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/markdown-1.39.1-prel.vsix",
"vscode-builtin-npm": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/npm-1.39.1-prel.vsix",
"vscode-builtin-scss": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/scss-1.39.1-prel.vsix",
"vscode-builtin-typescript": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/typescript-1.39.1-prel.vsix",
"vscode-builtin-typescript-language-features": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/typescript-language-features-1.39.1-prel.vsix"
}
}
В противном случае запустите это в папке, где находится package.json
Ошибка команды «Пуск» не найдена.
yarn run theia start /home --hostname 0.0.0.0 --port 8080
Theia должен начать на порту 8080 минимально.
0
Cosmo Arun
29 Мар 2020 в 14:39
Эта проблема возникает, когда файл «package.json» будет удален или изменен. Пожалуйста, проверьте ваш файл «package.json».
0
deepak ranjan
15 Окт 2019 в 08:58
Вы также можете попробовать запустить сначала npm install и npm run или yarn start
1
Magofoco
8 Фев 2020 в 09:25
Просто беги
yarn add react-scripts
1
rohittheozzy
4 Окт 2019 в 20:03











