Function fromPredicate

  • fromPredicate<T>(
        predicate: (candidate: T) => boolean,
        description?: string,
    ): Specification<T>

    Utility function to create a specification from a predicate function

    Type Parameters

    • T

    Parameters

    • predicate: (candidate: T) => boolean

      A function that returns true if the candidate satisfies the specification

    • Optionaldescription: string

    Returns Specification<T>

    A new specification wrapping the predicate

    Example

    const isAdult = fromPredicate<Person>(p => p.age >= 18);
    const isEligible = isAdult.and(fromPredicate(p => p.hasValidId));

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