// Package valid provides struct validation backed by [github.com/go-playground/validator/v10].
//
// Create a validator with [New]:
//
//	v := valid.New()
//
// Validate a struct:
//
//	type CreateUserRequest struct {
//	    Name  string `validate:"required"`
//	    Email string `validate:"required,email"`
//	    Age   int    `validate:"min=18,max=120"`
//	}
//
//	err := v.Struct(req)
//	if err != nil {
//	    // err is a *xerrors.Err with code ErrInvalidInput.
//	    // Use errors.As to inspect it.
//	}
//
// Use Spanish messages:
//
//	v := valid.New(valid.WithMessageProvider(valid.SpanishMessages))
//
// Use a custom message provider:
//
//	type myMessages struct{}
//	func (m myMessages) Message(field, tag, param string) string { ... }
//
//	v := valid.New(valid.WithMessageProvider(myMessages{}))
package valid