NPM local server won't start. I am getting an error with ESLint

Question

Hi All,
I am on video 4 of the "Building Applications with React and Redux" series of videos. I have converted the App.js module to Scoreboard.js and I have installed all the dependencies. When I Try to start the server (npm start) I get an error (see below). It has something to do with ESLint. Thanks in advance for any help you can give me ....
Oops! Something went wrong! :(
ESLint: 7.7.0
No files matching the pattern "./src/*/.{js," were found.
Please check for typing mistakes in the pattern.
npm ERR! code ELIFECYCLE
npm ERR! errno 2
npm ERR! react-redux-course@1.0.0 lint: eslint ./src/**/*.{js, jsx} --fix
npm ERR! Exit status 2
npm ERR! 
npm ERR! Failed at the react-redux-course@1.0.0 lint script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/petermingione-macbook-home/.npm/logs/2020-08-24T224507644Z-debug.log
npm ERR! code ELIFECYCLE
npm ERR! errno 2
npm ERR! react-redux-course@1.0.0 prestart: npm run lint
npm ERR! Exit status 2
npm ERR! 
npm ERR! Failed at the react-redux-course@1.0.0 prestart script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/petermingione-macbook-home/.npm/logs/2020-08-24T224507674Z-debug.log

Peter Mingione · Answer

Hi Liam, Thank you for all of the help. I've followed the steps above but the server is still not starting. Here is the log output.... 0 info it worked if it ends with ok 1 verbose cli [ '/usr/local/Cellar/node/10.9.0/bin/node', 1 verbose cli '/usr/local/bin/npm', 1 verbose cli 'start' ] 2 info using npm@6.14.7 3 info using node@v10.9.0 4 verbose run-script [ 'prestart', 'start', 'poststart' ] 5 info lifecycle react-redux-course@1.0.0~prestart: react-redux-course@1.0.0 6 verbose lifecycle react-redux-course@1.0.0~prestart: unsafe-perm in lifecycle true 7 verbose lifecycle react-redux-course@1.0.0~prestart: PATH: /usr/local/lib/nodemodules/npm/nodemodules/npm-lifecycle/node-gyp-bin:/Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux-part-one/node_modules/.bin:/Users/petermingione-macbook-home/.rvm/gems/ruby-2.5.1/bin:/Users/petermingione-macbook-home/.rvm/gems/ruby-2.5.1@global/bin:/Users/petermingione-macbook-home/.rvm/rubies/ruby-2.5.1/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/Users/petermingione-macbook-home/.rvm/bin 8 verbose lifecycle react-redux-course@1.0.0~prestart: CWD: /Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux-part-one 9 silly lifecycle react-redux-course@1.0.0~prestart: Args: [ '-c', 'npm run lint' ] 10 silly lifecycle react-redux-course@1.0.0~prestart: Returned: code: 0 signal: null 11 info lifecycle react-redux-course@1.0.0~start: react-redux-course@1.0.0 12 verbose lifecycle react-redux-course@1.0.0~start: unsafe-perm in lifecycle true 13 verbose lifecycle react-redux-course@1.0.0~start: PATH: /usr/local/lib/nodemodules/npm/nodemodules/npm-lifecycle/node-gyp-bin:/Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux-part-one/node_modules/.bin:/Users/petermingione-macbook-home/.rvm/gems/ruby-2.5.1/bin:/Users/petermingione-macbook-home/.rvm/gems/ruby-2.5.1@global/bin:/Users/petermingione-macbook-home/.rvm/rubies/ruby-2.5.1/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/Users/petermingione-macbook-home/.rvm/bin 14 verbose lifecycle react-redux-course@1.0.0~start: CWD: /Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux-part-one 15 silly lifecycle react-redux-course@1.0.0~start: Args: [ '-c', 'webpack-dev-server --progress --inline --hot' ] 16 info lifecycle react-redux-course@1.0.0~start: Failed to exec start script 17 verbose stack Error: react-redux-course@1.0.0 start: webpack-dev-server --progress --inline --hot 17 verbose stack spawn ENOENT 17 verbose stack at ChildProcess. (/usr/local/lib/nodemodules/npm/nodemodules/npm-lifecycle/lib/spawn.js:48:18) 17 verbose stack at ChildProcess.emit (events.js:182:13) 17 verbose stack at maybeClose (internal/child_process.js:961:16) 17 verbose stack at Process.ChildProcess.handle.onexit (internal/childprocess.js:250:5) 18 verbose pkgid react-redux-course@1.0.0 19 verbose cwd /Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux-part-one 20 verbose Darwin 19.6.0 21 verbose argv "/usr/local/Cellar/node/10.9.0/bin/node" "/usr/local/bin/npm" "start" 22 verbose node v10.9.0 23 verbose npm v6.14.7 24 error code ELIFECYCLE 25 error syscall spawn 26 error file sh 27 error errno ENOENT 28 error react-redux-course@1.0.0 start: webpack-dev-server --progress --inline --hot 28 error spawn ENOENT 29 error Failed at the react-redux-course@1.0.0 start script. 29 error This is probably not a problem with npm. There is likely additional logging output above. 30 verbose exit [ 1, true ]

Liam Clarke · Answer

Hmm could be a dependency or caching issue but I believe its a versioning issue. Could you do the following steps just to be sure:
Clean your node cache

npm cache clean --force

Remove your nodemodules folder
```
rm -rf nodemodules/
```
Fresh install

npm install

Run eslint script by itself

npm run lint

It looks like the error is triggering due to no files being found. Which it should as where you are at in the video, there is no files under src. If you go into your package.json and replace the lint script with the following.
This is exactly the same as before with the --no-error-on-unmatched-pattern argument that will suppress the errors if nothing is found. Reference (https://eslint.org/docs/user-guide/command-line-interface#no-error-on-unmatched-pattern)

eslint ./src/**/*.{js, jsx} --fix --no-error-on-unmatched-pattern

As for the reasoning. This is due to the difference in versions. In the video, they are using eslint 3.3.1 and you are using 7.7.0. This was introduced in v6.x.
Good Luck!

Peter Mingione · Answer

0 info it worked if it ends with ok 1 verbose cli [ '/usr/local/Cellar/node/10.9.0/bin/node', 1 verbose cli '/usr/local/bin/npm', 1 verbose cli 'run', 1 verbose cli 'lint' ] 2 info using npm@6.14.7 3 info using node@v10.9.0 4 verbose run-script [ 'prelint', 'lint', 'postlint' ] 5 info lifecycle react-redux-course@1.0.0~prelint: react-redux-course@1.0.0 6 info lifecycle react-redux-course@1.0.0~lint: react-redux-course@1.0.0 7 verbose lifecycle react-redux-course@1.0.0~lint: unsafe-perm in lifecycle true 8 verbose lifecycle react-redux-course@1.0.0~lint: PATH: /usr/local/lib/nodemodules/npm/nodemodules/npm-lifecycle/node-gyp-bin:/Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux/nodemodules/.bin:/usr/local/lib/nodemodules/npm/nodemodules/npm-lifecycle/node-gyp-bin:/Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux/nodemodules/.bin:/Users/petermingione-macbook-home/.rvm/gems/ruby-2.5.1/bin:/Users/petermingione-macbook-home/.rvm/gems/ruby-2.5.1@global/bin:/Users/petermingione-macbook-home/.rvm/rubies/ruby-2.5.1/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/Users/petermingione-macbook-home/.rvm/bin 9 verbose lifecycle react-redux-course@1.0.0~lint: CWD: /Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux 10 silly lifecycle react-redux-course@1.0.0~lint: Args: [ '-c', 'eslint ./src/*/.{js, jsx} --fix' ] 11 silly lifecycle react-redux-course@1.0.0~lint: Returned: code: 2 signal: null 12 info lifecycle react-redux-course@1.0.0~lint: Failed to exec lint script 13 verbose stack Error: react-redux-course@1.0.0 lint: eslint ./src/**/*.{js, jsx} --fix 13 verbose stack Exit status 2 13 verbose stack at EventEmitter. (/usr/local/lib/nodemodules/npm/nodemodules/npm-lifecycle/index.js:332:16) 13 verbose stack at EventEmitter.emit (events.js:182:13) 13 verbose stack at ChildProcess. (/usr/local/lib/nodemodules/npm/nodemodules/npm-lifecycle/lib/spawn.js:55:14) 13 verbose stack at ChildProcess.emit (events.js:182:13) 13 verbose stack at maybeClose (internal/child_process.js:961:16) 13 verbose stack at Process.ChildProcess.handle.onexit (internal/childprocess.js:250:5) 14 verbose pkgid react-redux-course@1.0.0 15 verbose cwd /Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux 16 verbose Darwin 19.6.0 17 verbose argv "/usr/local/Cellar/node/10.9.0/bin/node" "/usr/local/bin/npm" "run" "lint" 18 verbose node v10.9.0 19 verbose npm v6.14.7 20 error code ELIFECYCLE 21 error errno 2 22 error react-redux-course@1.0.0 lint: eslint ./src/**/*.{js, jsx} --fix 22 error Exit status 2 23 error Failed at the react-redux-course@1.0.0 lint script. 23 error This is probably not a problem with npm. There is likely additional logging output above. 24 verbose exit [ 2, true ]

Peter Mingione · Answer

0 info it worked if it ends with ok 1 verbose cli [ '/usr/local/Cellar/node/10.9.0/bin/node', 1 verbose cli '/usr/local/bin/npm', 1 verbose cli 'start' ] 2 info using npm@6.14.7 3 info using node@v10.9.0 4 verbose run-script [ 'prestart', 'start', 'poststart' ] 5 info lifecycle react-redux-course@1.0.0~prestart: react-redux-course@1.0.0 6 verbose lifecycle react-redux-course@1.0.0~prestart: unsafe-perm in lifecycle true 7 verbose lifecycle react-redux-course@1.0.0~prestart: PATH: /usr/local/lib/nodemodules/npm/nodemodules/npm-lifecycle/node-gyp-bin:/Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux/node_modules/.bin:/Users/petermingione-macbook-home/.rvm/gems/ruby-2.5.1/bin:/Users/petermingione-macbook-home/.rvm/gems/ruby-2.5.1@global/bin:/Users/petermingione-macbook-home/.rvm/rubies/ruby-2.5.1/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/Users/petermingione-macbook-home/.rvm/bin 8 verbose lifecycle react-redux-course@1.0.0~prestart: CWD: /Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux 9 silly lifecycle react-redux-course@1.0.0~prestart: Args: [ '-c', 'npm run lint' ] 10 silly lifecycle react-redux-course@1.0.0~prestart: Returned: code: 2 signal: null 11 info lifecycle react-redux-course@1.0.0~prestart: Failed to exec prestart script 12 verbose stack Error: react-redux-course@1.0.0 prestart: npm run lint 12 verbose stack Exit status 2 12 verbose stack at EventEmitter. (/usr/local/lib/nodemodules/npm/nodemodules/npm-lifecycle/index.js:332:16) 12 verbose stack at EventEmitter.emit (events.js:182:13) 12 verbose stack at ChildProcess. (/usr/local/lib/nodemodules/npm/nodemodules/npm-lifecycle/lib/spawn.js:55:14) 12 verbose stack at ChildProcess.emit (events.js:182:13) 12 verbose stack at maybeClose (internal/child_process.js:961:16) 12 verbose stack at Process.ChildProcess.handle.onexit (internal/childprocess.js:250:5) 13 verbose pkgid react-redux-course@1.0.0 14 verbose cwd /Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux 15 verbose Darwin 19.6.0 16 verbose argv "/usr/local/Cellar/node/10.9.0/bin/node" "/usr/local/bin/npm" "start" 17 verbose node v10.9.0 18 verbose npm v6.14.7 19 error code ELIFECYCLE 20 error errno 2 21 error react-redux-course@1.0.0 prestart: npm run lint 21 error Exit status 2 22 error Failed at the react-redux-course@1.0.0 prestart script. 22 error This is probably not a problem with npm. There is likely additional logging output above. 23 verbose exit [ 2, true ]

Peter Mingione · Answer

2nd log file .... 0 info it worked if it ends with ok 1 verbose cli [ '/usr/local/Cellar/node/10.9.0/bin/node', 1 verbose cli '/usr/local/bin/npm', 1 verbose cli 'run', 1 verbose cli 'lint' ] 2 info using npm@6.14.7 3 info using node@v10.9.0 4 verbose run-script [ 'prelint', 'lint', 'postlint' ] 5 info lifecycle react-redux-course@1.0.0~prelint: react-redux-course@1.0.0 6 info lifecycle react-redux-course@1.0.0~lint: react-redux-course@1.0.0 7 verbose lifecycle react-redux-course@1.0.0~lint: unsafe-perm in lifecycle true 8 verbose lifecycle react-redux-course@1.0.0~lint: PATH: /usr/local/lib/nodemodules/npm/nodemodules/npm-lifecycle/node-gyp-bin:/Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux/nodemodules/.bin:/usr/local/lib/nodemodules/npm/nodemodules/npm-lifecycle/node-gyp-bin:/Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux/nodemodules/.bin:/Users/petermingione-macbook-home/.rvm/gems/ruby-2.5.1/bin:/Users/petermingione-macbook-home/.rvm/gems/ruby-2.5.1@global/bin:/Users/petermingione-macbook-home/.rvm/rubies/ruby-2.5.1/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/Users/petermingione-macbook-home/.rvm/bin 9 verbose lifecycle react-redux-course@1.0.0~lint: CWD: /Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux 10 silly lifecycle react-redux-course@1.0.0~lint: Args: [ '-c', 'eslint ./src//*.{js, jsx} --fix' ] 11 silly lifecycle react-redux-course@1.0.0~lint: Returned: code: 2 signal: null 12 info lifecycle react-redux-course@1.0.0~lint: Failed to exec lint script 13 verbose stack Error: react-redux-course@1.0.0 lint: `eslint ./src//.{js, jsx} --fix 13 verbose stack Exit status 2 13 verbose stack at EventEmitter. (/usr/local/lib/node_modules/npm/node_modules/npm-lifecycle/index.js:332:16) 13 verbose stack at EventEmitter.emit (events.js:182:13) 13 verbose stack at ChildProcess. (/usr/local/lib/node_modules/npm/node_modules/npm-lifecycle/lib/spawn.js:55:14) 13 verbose stack at ChildProcess.emit (events.js:182:13) 13 verbose stack at maybeClose (internal/child_process.js:961:16) 13 verbose stack at Process.ChildProcess._handle.onexit (internal/child_process.js:250:5) 14 verbose pkgid react-redux-course@1.0.0 15 verbose cwd /Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux 16 verbose Darwin 19.6.0 17 verbose argv "/usr/local/Cellar/node/10.9.0/bin/node" "/usr/local/bin/npm" "run" "lint" 18 verbose node v10.9.0 19 verbose npm v6.14.7 20 error code ELIFECYCLE 21 error errno 2 22 error react-redux-course@1.0.0 lint:eslint ./src//.{js, jsx} --fix` 22 error Exit status 2 23 error Failed at the react-redux-course@1.0.0 lint script. 23 error This is probably not a problem with npm. There is likely additional logging output above. 24 verbose exit [ 2, true ]

Peter Mingione · Answer

Hi Liam, I found the log It is posted below..... 0 info it worked if it ends with ok 1 verbose cli [ '/usr/local/Cellar/node/10.9.0/bin/node', 1 verbose cli '/usr/local/bin/npm', 1 verbose cli 'start' ] 2 info using npm@6.14.7 3 info using node@v10.9.0 4 verbose run-script [ 'prestart', 'start', 'poststart' ] 5 info lifecycle react-redux-course@1.0.0~prestart: react-redux-course@1.0.0 6 verbose lifecycle react-redux-course@1.0.0~prestart: unsafe-perm in lifecycle true 7 verbose lifecycle react-redux-course@1.0.0~prestart: PATH: /usr/local/lib/nodemodules/npm/nodemodules/npm-lifecycle/node-gyp-bin:/Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux/nodemodules/.bin:/Users/petermingione-macbook-home/.rvm/gems/ruby-2.5.1/bin:/Users/petermingione-macbook-home/.rvm/gems/ruby-2.5.1@global/bin:/Users/petermingione-macbook-home/.rvm/rubies/ruby-2.5.1/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin:/Users/petermingione-macbook-home/.rvm/bin 8 verbose lifecycle react-redux-course@1.0.0~prestart: CWD: /Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux 9 silly lifecycle react-redux-course@1.0.0~prestart: Args: [ '-c', 'npm run lint' ] 10 silly lifecycle react-redux-course@1.0.0~prestart: Returned: code: 2 signal: null 11 info lifecycle react-redux-course@1.0.0~prestart: Failed to exec prestart script 12 verbose stack Error: react-redux-course@1.0.0 prestart: npm run lint 12 verbose stack Exit status 2 12 verbose stack at EventEmitter. (/usr/local/lib/nodemodules/npm/nodemodules/npm-lifecycle/index.js:332:16) 12 verbose stack at EventEmitter.emit (events.js:182:13) 12 verbose stack at ChildProcess. (/usr/local/lib/nodemodules/npm/nodemodules/npm-lifecycle/lib/spawn.js:55:14) 12 verbose stack at ChildProcess.emit (events.js:182:13) 12 verbose stack at maybeClose (internal/childprocess.js:961:16) 12 verbose stack at Process.ChildProcess.handle.onexit (internal/childprocess.js:250:5) 13 verbose pkgid react-redux-course@1.0.0 14 verbose cwd /Users/petermingione-macbook-home/react-projects/learn react course/5. React Redux Course (create-react-app : redux : react-redux)/react-redux 15 verbose Darwin 19.6.0 16 verbose argv "/usr/local/Cellar/node/10.9.0/bin/node" "/usr/local/bin/npm" "start" 17 verbose node v10.9.0 18 verbose npm v6.14.7 19 error code ELIFECYCLE 20 error errno 2 21 error react-redux-course@1.0.0 prestart: npm run lint 21 error Exit status 2 22 error Failed at the react-redux-course@1.0.0 prestart script. 22 error This is probably not a problem with npm. There is likely additional logging output above. 23 verbose exit [ 2, true ]

Liam Clarke · Answer

Hi Peter
Can you check that the file path is correct. The relative path is relative to the package.json, not to the working directory.
lint: eslint ./src/*/.{js, jsx}
So the above should have some structure like this:

src/somefolder/some-file.js
package.json
...

Try specifying the extensions separate with the below command in your script
```
eslint —ext .jsx,.js  src/*/
Or
eslint —ext .jsx,.js  src/
```
If that doesn’t work can you paste in the full log so I can see more details as to what’s going wrong /Users/petermingione-macbook-home/.npm/_logs/2020-08-24T22_45_07_674Z-debug.log
Hope this helps!

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Peter Mingione

Peter Mingione

NPM local server won't start. I am getting an error with ESLint

7 Answers

Liam Clarke

Liam Clarke

Peter Mingione

Peter Mingione

Peter Mingione

Peter Mingione

Peter Mingione

Peter Mingione

Peter Mingione

Peter Mingione

Peter Mingione

Peter Mingione

Liam Clarke

Liam Clarke

Peter Mingione

Peter Mingione