What is the best way to verify a field against a set of string values using Typescript in a NestJS application

I currently have an Enum containing various timezones listed below

export enum Timezones  {
    'Europe/Andorra',
    'Asia/Dubai',
    'Asia/Kabul',
    'America/Antigua'
}

In the DTO file, I am attempting to validate the timezone field using the Enum as depicted below

  @IsEnum(Timezones, { each: true })
  timezone: string;

Unfortunately, the validation process is not functioning properly and is allowing acceptance of other values.

Answer №1

this enumeration

export enum Locations  {
    'Europe/Andorra',
    'Asia/Dubai',
    'Asia/Kabul',
    'America/Antigua'
}

gets interpreted in the following manner

export enum Locations  {
    0 : 'Europe/Andorra',
    1 : 'Asia/Dubai',
    2 : 'Asia/Kabul',
    3 : 'America/Antigua'
}

thus, validating against the indices 0, 1, 2, 3... I am unsure of how to resolve this issue

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