Build failure with `exactOptionalPropertyTypes` enabled

[Suraj Jha]

Is your feature request related to a problem? Please describe.

Building the project using this library fails when exactOptionalPropertyTypes is enabled in project's tsconfig.json unless skipLibCheck is also set to true. skipLibCheck bypasses type checking for third-party libraries, compromising type safety.

Describe the solution you'd like

• Add the exactOptionalPropertyTypes property to oclif/core's tsconfig.json.
• Make any necessary code changes to ensure successful build with this option enabled.

Example rc/config/plugin.ts#L85:

From	To
{ parent: Plugin | undefined; }	{ parent?: Plugin; }

Additional context

• This change will improve type safety, leading to fewer potential runtime errors.
• It demonstrates adherence to best practices for TypeScript projects.

I would be happy to come up with a PR or collaborate on a potential solution.

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[Rik Smale]

This is still something I'm interested in

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[Rik Smale]

Just like last month, this still is something I'd like to see. @mdonnalley you marked this as unlikely, while the creator of the issue mentioned that they are willing to come up with a PR. What's holding us back?

[Mike Donnalley]

@WikiRik Sorry, I forgot to update the labels on this. We're planning on addressing this in the next major