/TypeScript/Class-transformer default value

Class-transformer default value

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
}

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