CLI - codegen command now supports the --watch option

[pileks]

Resolves #1459

You can now run npx polywrap codegen --watch which will automatically watch files within your project directory and re-run codegen whenever changes are detected.

[krisbitney]

This is a great feature! Very cool stuff. 😁

[krisbitney]

There is already a try-catch block within codeGenerator.generate() that catches and logs any errors, so the try-catch block in codegen.ts will log the errors a second time.

https://github.com/polywrap/toolchain/blob/origin-dev/packages/cli/src/lib/codegen/CodeGenerator.ts

[dOrgJelli]

Hmmm, this try/catch logic is also in the build command. Honestly I think it's alright to log more than once, and it might be best to remove the try/catch from within the lib layer. Thoughts?

[krisbitney]

Yeah, either way is good. I prefer removing the try-catch from the lib layer if there are no side effects from doing that, but I'd also be happy merging this as-is.

[dOrgJelli]

Looks great! Waiting for @krisbitney's approval regarding logging practices.