fix: much clearer npx 'canceled' error

[rahulio96]

Summary

Currently, when running npx --no-install on a package that is not installed will return a vague error message that says, “canceled.”

Added accompanying tap test to ensure the expected error is outputted.

This solution gives the error message more clarity to make debugging easier.

Testing

Reproduce Original Error:

• Enter in terminal:
  • npx --no-install <missing_package>
    Please Note: <missing_package> is either not installed or in path

Tap Test (exec.js only)

• Enter in terminal:
  • node . run test test/lib/commands/exec.js

Run entire test:

• Enter in terminal:
  • node . run test

Alias Test

• Enter in terminal:
  • alias localnpx="node /workspaces/cli/bin/npx-cli.js"
  • localnpx --no-install esbuild

References

Fixes #6215

[wraithgar]

Suggested change

	throw new Error(`npx canceled due to missing packages and no YES option: ${JSON.stringify(missingPackages)}`)
	/* eslint-disable-next-line max-len */
	throw new Error(`npx canceled due to missing packages and no YES option: ${JSON.stringify(missingPackages)}`)

[wraithgar]

Can you please add the max-len override for the thrown error, then run npm run lintfix -w libnpmexec --include-workspace-root

[AaronHamilton965]

Thanks for the feedback, we made the appropriate changes that you suggested!

[wraithgar]

Thank you

[DevBrent]

What does "no YES option" mean? How can you correct this if you encounter this error? What is the option you need to add?

[rahulio96]

The “no YES option” is what --no-install is doing. It means that npx will not install any missing packages and will try to run the command as is. If you are getting the npx canceled due to missing packages and no YES option error, it means you are missing the required packages/dependencies for the command to run properly.

If you want your command to execute, instead of using --no-install try using install instead. If that does not work, try installing the missing packages mentioned in the error message using npm install.