Webpack-cli: TypeError: Cannot read property 'properties' of undefined

[rostaryms]

I'm getting an error on my command prompt when I type 'npm run dev'.

This is the first time I've tried to type in npm run dev, so the error has been happening from the beginning.

To reproduce this error I just type in 'npm run dev' into the command prompt.

I expect typing in npm run dev to create a bundle.js file in the file folder I'm currently in.

I'm not sure what webpack cli info is.

The context of this error is that I'm watching a paid for online video tutorial from udemy.

If you need any more info let me know.

Thanks for the help!

[ematipico]

@rostaryms please next time do not remove the template or we'd need to close the issue.
Could you please fill the original template and provide a repo to reproduce (config file, version of webpack and webpack cli). I think this is a problem with your webpack config file

[rishabh3112]

Replying to your doubt,

I'm not sure what webpack cli info is.

@webpack-cli/info is a npm package that outputs versions of webpack and webpack-cli. If you don't feel like installing it, please attach output of following commands.

npx webpack --version

Also we need minimum reproducible repository as @ematipico suggested to work on the issue.

[rostaryms]

@rostaryms please next time do not remove the template or we'd need to close the issue.
Could you please fill the original template and provide a repo to reproduce (config file, version of webpack and webpack cli). I think this is a problem with your webpack config file

Yes next time I can keep the template paragraphs within the issue post, sure.

As for providing a repo to reproduce, a config file, a version of webpack, and webpack cli, I'm not sure how to show those things. I'll have to do some research before I can provide that for you. Let me try now.

Replying to your doubt,

I'm not sure what webpack cli info is.

@webpack-cli/info is a npm package that outputs versions of webpack and webpack-cli. If you don't feel like installing it, please attach output of following commands.

npx webpack --version

Also we need minimum reproducible repository as @ematipico suggested to work on the issue.

I'll have to research what a repository is before I give you one. Let me try that now.

Here is the result of typing in npx webpack --version:

C:\Users\rosta\Documents\JavaScript_Build_Real_Projects_2020\9-forkify>npx webpack --version
C:\Users\rosta\Documents\JavaScript_Build_Real_Projects_2020\9-forkify\node_moduleswebpack-cli\bin\config-yargs.js:89
describe: optionsSchema.definitions.output.properties.path.description,
^

TypeError: Cannot read property 'properties' of undefined
at module.exports (C:\Users\rosta\Documents\JavaScript_Build_Real_Projects_2020\9-forkify\node_modules\webpack-cli\bin\config-yargs.js:89:48)
at C:\Users\rosta\Documents\JavaScript_Build_Real_Projects_2020\9-forkify\node_modules\webpack-cli\binwebpack.js:60:27
at Object. (C:\Users\rosta\Documents\JavaScript_Build_Real_Projects_2020\9-forkify\node_modules\webpack-cli\binwebpack.js:515:3)
 at Module._compile (internal/modules/cjs/loader.js:1144:30)
 at Object.Module._extensions..js (internal/modules/cjs/loader.js:1164:10)
 at Module.load (internal/modules/cjs/loader.js:993:32)
 at Function.Module._load (internal/modules/cjs/loader.js:892:14)
 at Module.require (internal/modules/cjs/loader.js:1033:19)
 at require (internal/modules/cjs/helpers.js:72:18)
at Object. (C:\Users\rosta\Documents\JavaScript_Build_Real_Projects_2020\9-forkify\node_modules\webpack\binwebpack.js:156:2)

C:\Users\rosta\Documents\JavaScript_Build_Real_Projects_2020\9-forkify>

[ematipico]

It's really difficult to debug your issue without having a repository to reproduce the issue and without config file.

[ematipico]

Closing. Feel free to open a new issue one you have a repo.

[danlafreniere]

Late to the party but I'm in the same course and encountered a similar issue. Having a more up-to-date webpack-cli npm install webpack-cli@3 --save-dev worked for me.

[Zeesy]

Also in the Udemy course, MacOS 10.14. With @ danlafreniere's suggestion to update, I'm still unable to run npm run dev and am receiving new error messages. Specifically:

Insufficient number of arguments or no entry found.
Alternatively, run 'webpack(-cli) --help' for usage info.

Hash: 7b2687bf27424b83f3d2
Version: webpack 4.44.2
Time: 36ms
Built at: 10/25/2020 3:40:31 PM

ERROR in Entry module not found: Error: Can't resolve './src/js/index.js' in '/Users/Zeesy/Documents/EDUCATION/complete-javascript-course-master/9-forkify'
npm ERR! code 2
npm ERR! path /Users/Zeesy/Documents/EDUCATION/complete-javascript-course-master/9-forkify
npm ERR! command failed
npm ERR! command sh -c webpack

Log attached here 🤷‍♂️

2020-10-25T19_40_31_636Z-debug.log