are there any helper functions in any of the pulumi packages for converting javascript objects to yaml strings?

No, don't believe we have any built-in helpers for that. You can bring in third-party libraries though. 🙂

In particular - we ourselves use this package: https://www.npmjs.com/package/js-yaml

@white-balloon-205 it gave me an error about promises. I guess I'd have to

.apply

any pulumi input/output stuff?

can you share your code you're trying?

let clientSecret = config.requireSecret('clientSecret');
const config = {client_secret: clientSecret};
const cm = new kx.ConfigMap("vouch-cm", {
    data: {"config.yml": yaml.dump(config)}
});

there's more structure to the config, but that's the relevant part

I believe this should work:

let clientSecret = config.requireSecret('clientSecret');
const cm = new kx.ConfigMap("vouch-cm", {
    data: {"config.yml": clientSecret.apply(s => yaml.dump({client_secret: s})}
});

it does not 😞

Are you sure you used the code snippet above? I don't see how that code could produce that message.

woops! typo in the code. you're right, it does work.