@lucaspaganini/value-objects/src/core/functions.ts

TypeScript first validation and class creation library

import { Either, isError, left, right } from '../utils'
import { ValueObjectContructor, VOCRawInit } from './value-object'

export const makeIsValidRawInit =
  <VOC extends ValueObjectContructor>(VO: VOC) =>
  // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types
  (v: any): v is VOCRawInit<VOC> => {
    try {
      new VO(v)
      return true
    } catch {
      return false
    }
  }

export const makeFromRawInit =
  <VOC extends ValueObjectContructor>(VO: VOC) =>
  (data: VOCRawInit<VOC>): Either<Array<Error>, InstanceType<VOC>> => {
    try {
      return right(new VO(data) as any)
    } catch (err) {
      if (isError(err)) return left([err])
      if (err instanceof Array && err.every(isError)) return left(err)
      return left([Error()])
    }
  }

export interface ValueObjectFunctions<VOC extends ValueObjectContructor> {
  isValidRawInit(v: any): v is VOCRawInit<VOC>
  fromRawInit(data: VOCRawInit<VOC>): Either<Array<Error>, InstanceType<VOC>>
}

export const makeFunctions = <VOC extends ValueObjectContructor>(VO: VOC): ValueObjectFunctions<VOC> => ({
  isValidRawInit: makeIsValidRawInit(VO),
  fromRawInit: makeFromRawInit(VO),
})