ValidatorUtils<S, T> extension

Utilities that can be called on a Validator

Scope for all instance methods

on

• ValidatorT<S, T>

Methods

catching([Selector<Exception, ValidationError>? handler]) → ValidatorT<S, T>

Creates a new validator from the caller that will catch an errors when evaluating the validating function.

errors<ErrorType>(S subject) → List<ErrorType>

Runs the validator and returns a list of errors

firstError<ErrorType>(S subject) → ErrorType?

Runs the validator and returns the first error of the provided generic type

flatMap<O>(ValidatorT<T, O> process(T)) → ValidatorT<S, O>

Recieves a function that generates a validator and plumbs the output of the current to validator to the function.

join<O>(ValidatorT<T, O> validator) → ValidatorT<S, O>

Chains a validation to the output

map<O>(Function1<T, O> transform) → ValidatorT<S, O>

Transforms the ouput of the validator by running the provided function. Leaving the validation logic untouched. returns validator with coerced output.

mapErrors<E>(Function1<dynamic, E?> transform) → ValidatorT<S, T>

Transforms errors produced by the validor Leaving the validation logic untouched. returns validator with coerced output.

then<O>(ValidatorT<T, O> validator) → ValidatorT<S, O>

Chains a validation to the output

validated(S subject) → T?

Returns the validated and transformed subject If validation of subject fails returns null

verify<ErrorType extends ValidationError>(S subject) → Either<List<ErrorType>, T>

Runs the validator on the supplied subject.