npx blitz new prints an error but resumes creating app

[Talor-A]

What is the problem?

running npx blitz new (no global blitz installed, so fetching the latest version

Paste all your error logs here:

$ npx blitz new the-magic-scheduler 
TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received null
    at validateString (internal/validators.js:120:11)
    at Object.join (path.js:1039:7)
    at main (/Users/ta/.npm/_npx/15781/lib/node_modules/blitz/scripts/postinstall.js:84:43) {
  code: 'ERR_INVALID_ARG_TYPE'
}
? Pick a form library (you can switch to something else later if you want) … 
❯ React Final Form (recommended)
  React Hook Form
  Formik

Paste all relevant code snippets here:

N/A

What are detailed steps to reproduce this?

1. npx blitz new myapp with no global blitz installed
2. error is printed
3. project is initialized fine

Run blitz -v and paste the output here:

$ npx blitz version

@blitzjs/cli/0.38.6 darwin-x64 node-v12.20.0

Please include below any other applicable logs and screenshots that show your problem:

No response

[flybayer]

Ah, looks like a bug! Thanks for the report.

For whoever wants to look into this, here's the broken line of code: https://github.com/blitz-js/blitz/blob/canary/packages/blitz/scripts/postinstall.js#L84

I think probably we need to also check that root is not null in that if statement. If null, skip that if.

[satya-nutella]

@flybayer I'd love to take this up if thats okay? Just getting started with blitz, trying to get my first contribution

[flybayer]

@meehawk You bet!