Does Yokai support nested schema validation?

[dev-fu]

Hi, I'm exploring the use of Yokai for validating configurations in my project, and I wanted to know whether Yokai supports nested schema validation.

For example, if my config file includes a nested object like this:
database:
host: localhost
port: 5432
credentials:
username: admin
password: secret
Is it possible to write a schema in Yokai that recursively validates nested fields like credentials.username? If so, how should the schema be defined?

What I’ve tried:

I looked at the examples, but most show flat structures.

Tried writing a schema using dot notation, but it didn’t seem to validate nested objects properly.

Any guidance or examples would be much appreciated!

[nicholas555-dev]

Yes, Yokai does support nested validation, but not out of the box using dot notation like credentials.username.

Instead, you can define nested validation by using object-based schema definitions. Here’s an example of how you might structure it:

ts
Copy
const schema = {
database: {
host: { type: 'string' },
port: { type: 'number' },
credentials: {
username: { type: 'string' },
password: { type: 'string' }
}
}
};
If you're writing this schema in code, using the programmatic API is the most flexible. If you're writing it in YAML, try mirroring the structure.