Cannot infer value type

Reproduction

@Value() can infer only the supported primitive runtime types:

src/options.ts

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import { Value } from 'func'

class Options {
  @Value()
  when: Date = new Date()
}

How to fix it

Pass a supported parser type explicitly and keep the property type compatible:

src/options.ts

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class Options {
  @Value({ type: String })
  when = ''
}

Use String, Number, or Boolean. For repeated strings, use @ArrayValue().