Error: yarn start - error Command "start" not found

Question

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:

Can you show us the `package.json` file and more specifically the "scripts" section? — Tsvetan Ganev, Jan 27 '19 at 21:49

score 30 · Accepted Answer · answered Jan 27 '19 at 22:01

30

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 '19 at 22:01

Tsvetan Ganev

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That is what I was thinking too but I have 2 remarks. 1) I opened the solution file of the private repo and the soultion's `package.json` matches mine (plus, yesterday eberything was working) 2) How can I run the JS files in the folder `lib` if i do not run `yarn start`? I tried with `npm run` but I get: `Lifecycle scripts included in 02-Manipulating-Strings: test (eslint lib || true) && jest` – Magofoco Jan 27 '19 at 22:08
If I try to run: `node lib/01_dash_insertion.js` nothing happen. So I tried to install `npm install --save-dev webpack`but still I cannot run any js file. – Magofoco Jan 27 '19 at 22:33
"start": "webpack-dev-server --mode development" – Fábio BC Souza May 19 '19 at 14:49

score 8 · Answer 2 · answered Oct 04 '19 at 20:03

8

Just run

yarn add react-scripts

answered Oct 04 '19 at 20:03

rohittheozzy

309
3
4

I tried that and it didn't work. Still have the same issue. – Jamil Matheny Jul 16 '22 at 12:51

Magofoco · Answer 3 · 2019-11-26T01:28:45.067

5

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",

edited Nov 26 '19 at 01:28

answered Jan 28 '19 at 19:23

Magofoco

5,098
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77

please mark Tsvetan Ganev. reply as an answer if it helped solve your problem. – Hemanshu Bhojak Feb 19 '20 at 02:17

Magofoco · Answer 4 · 2020-05-13T08:10:35.353

4

You can also try to run first npm install and then npm run or first yarn and then yarn start

edited May 13 '20 at 08:10

answered Nov 22 '19 at 19:29

Magofoco

5,098
6
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77

I tried with yarn and yarn start, I am still getting the following error. yarn run v1.22.10 warning package.json: No license field error Command "start" not found. info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command. – jyotisankar May 17 '21 at 09:15
Try adding: "start": "react-scripts start" in your "scripts" inside package.json – Magofoco May 17 '21 at 17:58

Priyanka · Answer 5 · 2020-07-22T07:25:58.710

4

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.

edited Jul 22 '20 at 07:25

answered Jul 18 '20 at 08:54

Priyanka

41
2

score 4 · Answer 6 · answered Jul 22 '20 at 12:43

4

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 '20 at 12:43

Med Sep

346
1
6

score 3 · Answer 7 · answered Jun 28 '20 at 18:23

3

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 '20 at 18:23

Ankur

151
7

score 3 · Answer 8 · answered Sep 09 '21 at 12:34

3

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 09 '21 at 12:34

user16376702

31
1

This would be more appropriate as a comment. – cursorrux Sep 09 '21 at 15:30
1

Please add further details to expand on your answer, such as working code or documentation citations. – Community Sep 09 '21 at 18:23
This should be on top. – ronnieotieno Nov 02 '21 at 10:54

score 1 · Answer 9 · answered Oct 19 '19 at 06:17

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"
  },

score 1 · Answer 10 · answered Feb 08 '20 at 05:58

1

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 08 '20 at 05:58

ohkts11

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Arun Panneerselvam · Answer 11 · 2020-03-29T14:39:27.630

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.

score 1 · Answer 12 · answered Nov 02 '20 at 05:51

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.

score 1 · Answer 13 · answered Jan 09 '21 at 05:45

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.

gihan22603 · Answer 14 · 2021-07-26T16:36:14.283

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:\PROJECTS\npx 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:\PROJECTS\cd app-react
D:\PROJECTS\app-react\

then install other yarn packges

D:\PROJECTS\app-react\yarn add @chakra-ui/react @emotion/react@^11 @emotion/styled@^11 framer-motion@^4

D:\PROJECTS\app-react\yarn add react-icons

D:\PROJECTS\app-react\yarn add react-router-dom

then yarn start

D:\PROJECTS\app-react\yarn start

if it is won't open check yarn package installed using this command

D:\PROJECTS\app-react\yarn -version
1.22.10

for install yarn

npm install --global yarn

Please provide a detailed explanation to your answer, in order for the next user to understand your answer better. — Elydasian, Jul 26 '21 at 08:10

score 1 · Answer 15 · answered Mar 30 '22 at 19:15

1

just run following commands:

npm uninstall -g create-react-app
npx create-react-app FolderName

answered Mar 30 '22 at 19:15

Zain Shahid

9
3

score 0 · Answer 16 · answered Aug 31 '19 at 08:47

0

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 '19 at 08:47

Abdollah

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3
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score 0 · Answer 17 · answered Oct 15 '19 at 08:58

0

This issue happens when file "package.json" will gets deleted or changed. Please check your "package.json" file.

answered Oct 15 '19 at 08:58

deepak ranjan

31
3

score 0 · Answer 18 · answered Aug 11 '20 at 19:16

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!

score 0 · Answer 19 · answered Oct 16 '20 at 14:53

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

score 0 · Answer 20 · answered Feb 08 '21 at 18:45

0

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 08 '21 at 18:45

Burak Dikbaş

1

score 0 · Answer 21 · answered Apr 27 '21 at 05:30

0

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 '21 at 05:30

Shiplu

460
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score 0 · Answer 22 · edited Aug 26 '21 at 02:38

0

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.

edited Aug 26 '21 at 02:38

Leo

1,990
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answered Aug 24 '21 at 05:11

Tariq Nawaz

41
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This is not related to this case. The OP had a problem with running a command that did not exist in the package json because it was not intended to. – Markiian Benovskyi Aug 25 '21 at 10:14

bob jackson · Answer 23 · 2022-03-30T11:05:35.153

0

just run command

corepack disable

if you ran the following command before

corepack enable

edited Mar 30 '22 at 11:05

answered Mar 26 '22 at 10:25

bob jackson

1
1

As it’s currently written, your answer is unclear. Please [edit] to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Mar 27 '22 at 11:43

score 0 · Answer 24 · answered Apr 09 '22 at 19:42

0

I was outside the project. So I type cd myProject and than yarn run

answered Apr 09 '22 at 19:42

Java bee

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Walaa Zahran · Answer 25 · 2022-04-17T17:51:31.630

0

{
        test: /\.scss$/,
        include: [/vue-components|views/],
        use: [
          'vue-style-loader',
          'css-loader',
          'sass-loader',
        ],
},

put this in webpack.config.js in module object.

edited Apr 17 '22 at 17:51

answered Apr 16 '22 at 04:48

Walaa Zahran

1
1

As it’s currently written, your answer is unclear. Please [edit] to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Apr 16 '22 at 14:46

score 0 · Answer 26 · answered Apr 23 '22 at 13:02

0

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 '22 at 13:02

Ashutosh Pandey

1

score 0 · Answer 27 · answered May 14 '22 at 13:55

0

I had the same issue. Just run

npm install --global yarn

answered May 14 '22 at 13:55

Pranay Singh

1
1

this error happens when you're running `yarn start` in a wrong directory instead of the root directory where package.json is. if they didn't have yarn installed then they would've gotten a different error like yarn is not found. – zahra shahrouzi May 15 '22 at 19:02

score 0 · Answer 28 · answered Jul 16 '22 at 13:47

 "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.

score 0 · Answer 29 · answered Jul 19 '22 at 16:01

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.

score -1 · Answer 30 · answered Feb 20 '23 at 10:48

-1

just start the app via debug option enter image description here

answered Feb 20 '23 at 10:48

asar

1

https://meta.stackoverflow.com/a/285557/7733418 – Yunnosch Feb 20 '23 at 11:03
Please make the differce to the exsting answer more obvious. You seem to just say thanks for https://stackoverflow.com/a/73004724/7733418 – Yunnosch Feb 20 '23 at 11:04
As it’s currently written, your answer is unclear. Please [edit] to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Feb 24 '23 at 01:27

Error: yarn start - error Command "start" not found

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