`FATAL ERROR: v8::ToLocalChecked Empty MaybeLocal` about projen

[garysassano]

Apparently, only yarn accepts the v in front of the semver. Both npm and pnpm refuse to accept that.

This works:

npx projen new awscdk-app-ts --package-manager yarn --cdk-version v2.128.0

And since it works, you end up with a .projenrc.ts and package.json including v2.128.0.

[mrgrain]

npx projen new awscdk-app-ts --package-manager pnpm --cdk-version v2.128.0

Works without problems for me. What version of node are you using?
I don't think projen does anything specifically that would make it prone to v8 FATAL ERRORS.

[garysassano]

Restarted the WSL2 env and now the problem is gone. Still, I think we should sanitize the parameters and strip out the v. It's not normal to have that showing up in your package.json.

[mrgrain]

NPM also works:

npx projen new awscdk-app-ts --package-manager npm --cdk-version v2.128.0

---

^v2.127.0 is a perfectly fine version constraint. You can check this here: https://semver.npmjs.com/
Or run npm show aws-cdk@^v2.127.0 which will also resolve correctly.

[mrgrain]

Restarted the WSL2 env and now the problem is gone. Still, I think we should sanitize the parameters and strip out the v. It's not normal to have that showing up in your package.json.

It is only added because you have put it in the projen new command and it is a perfectly valid semver version constraint that is (at least within the node ecosystem) accept by all major package managers. I'm not inclined to artificially restrict valid use cases.

Happy to update any documentation if we use it somewhere. I agree it's certainly a bit unusual.

[garysassano]

It is only added because you have put it in the projen new command and it is a perfectly valid semver version constraint that is (at least within the node ecosystem) accept by all major package managers. I'm not inclined to artificially restrict valid use cases.

Happy to update any documentation if we use it somewhere. I agree it's certainly a bit unusual.

Yeah, I know it's a valid semver, but as you said, it's quite unusual to see that. Even if you are the one explicitly passing it as a parameter, I wouldn't expect to see it in the generated files.

[mrgrain]

Closing this one as it was due to WSL. You're welcome to open a new issue the discuss the automatic stripping of v and gather community input on it.