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class-transformer default value (optionlValue)

Mohammad Mojtaba Roshani answered on September 11, 2022 Popularity 1/10 Helpfulness 1/10

answer class-transformer default value (optionlValue)

class-transformer default value (optionlValue)

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import { Transform, Expose } from 'class-transformer'
import { cloneDeep } from 'lodash'

export function Default(defaultValue: unknown): PropertyDecorator {
  return Transform((value: unknown) => value ?? cloneDeep(defaultValue))
}
                   
class A {
  @Expose()
  @Default('123')
  a?: string
}

Popularity 1/10 Helpfulness 1/10 Language typescript

Source: Grepper

Tags: class-transformer default-value typescript

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