request: Narrowing types from schema

[sapphiredev]

request: Narrowing types from schema

[KhafraDev]

I came up with something like this, but a little too lazy to write tests

diff --git a/src/validators/BaseValidator.ts b/src/validators/BaseValidator.ts
index 60d719e..873ffca 100644
--- a/src/validators/BaseValidator.ts
+++ b/src/validators/BaseValidator.ts
@@ -80,6 +80,18 @@ export abstract class BaseValidator<T> {
                return this.constraints.reduce((v, constraint) => constraint.run(v).unwrap(), this.handle(value).unwrap()) as R;
        }
 
+       public is<R extends T = T>(value: unknown): value is R {
+              return this.run(value).isOk()
+       }
+
        /**
         * Sets if the validator should also run constraints or just do basic checks.
         * @param isValidationEnabled Whether this validator should be enabled or disabled. You can pass boolean or a function returning boolean which will be called just before parsing
         * 

[imranbarbhuiya]

this is already possible

import { s } from '@sapphire/shapeshift'

const schema = s.object({
  a: s.string,
  b: s.number
})

const obj: any = {
  a: 'hello',
  b: 1
}

const parsedObj = schema.parse(obj)

parsedObj // InferType<typeof schema>

[KhafraDev]

this is already possible

That example doesn't work if the object doesn't match the schema (it will throw an error). I'd like a simple type guard without the extra baggage that throwing an error incurs.

[imranbarbhuiya]

ig schema.handle(obj) works this won't run https://github.com/sapphiredev/shapeshift/blob/main/src/validators/BaseValidator.ts#L80

Edit: I didn't read the issue properly.