synchronous loadConfig

[DetachHead]

it would be great if you could load the config without requiring an IIFE and a call to the loadConfig function at runtime.

something like node -r app-config/register for example.

[joelgallant]

Thanks for the feedback!

I believe that this would be something solved by https://v8.dev/features/top-level-await This is available in Node 14+, when using a "type": "module" package.

Unfortunately, this isn't possible to do with a --require because loadConfig is async, at least as far as I know. (it would lead to race conditions otherwise)

[joelgallant]

Further - our v1 actually had loadConfigSync. We had to move away from supporting this use case in order to support things like built-in encryption, and arbitrary parsing extensions.

[joelgallant]

@DetachHead does this solve your use case?

[DetachHead]

i tried updating our project to esmodules, but wasn't able to get it working with jest. seems their support for esmodules is experimental and it wouldn't work no matter what i tried.

[joelgallant]

Hm, yeah the Node ecosystem will still take a while to get there 100%.

Is https://app-config.dev/guide/testing/jest.html enough? It might require duplication unfortunately, but it's the best way I know of at the moment.

[DetachHead]

Yeah mocking it worked for our use case, though as mentioned in #100 that's not really ideal

[joelgallant]

Okay, thanks for the feedback! I agree with the conclusion there, wanted to make sure there wasn't an issue I could help with more quickly.

Moved this feature request to #152