[RFC]: default values in config placeholders for environment variables about untool

[dmbch]

I like this idea and we actually had this sometime early on. I would get rid of the quotes, though, as env vars are also always strings.

[ZauberNerd]

This has been merged into the next branch.

[bxt]

... but then what if you want [] in the default value? Maybe (I don't know wether its possible) the bash could be used to build the string, as it can already do things like ${API_URL:-https://api.com}, ${API_URL:?"Please specify the URL to super API serivce"} etc. and the syntax should be familiar to some already.

[KnisterPeter]

What about adding a default object next to the untool key? That way there would be no escaping and no parsing, just a lookup.

[dmbch]

@bxt I don’t think that that will work since we are reading from process.env here - no bash involved.

Of course, I have to give you the point about [], but I cannot really think of a lot of use cases for that. Nevertheless, I do not really feel strongly about those quotes.

[dmbch]

@KnisterPeter that will only work within package.json, but not in other places untool uses for configuration.

Additionally, I personally quite like the idea of keeping the env variable references and default values close to one another.

[ZauberNerd]

Relevant PR: #453