Lacking type coercion during validation

[goldbergyoni]

When validating input, it's also the right place to coerce value to their right domain type

For example, when getting req.body.userId - it's string by default, inside our domain it should be a number

Ajv supports this: https://ajv.js.org/coercion.html

[Taimoorkhan1122]

Hi, I would like to contribute to this amazing repo, is this issue still relevant?