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F_SYSTEM_OPTION_OVERRIDE_REQUIRED

Explicit option override required

An inner scope declares a field or action with the same name as an outer Module option without confirming the override.

Updated

Reproduction

The Command field would hide a same-named field on an outer option Provider without an explicit declaration of intent:

src/app.module.ts 
import { Command, Flag, Handler, Module, Option, createApp } from 'func'

@Option()
class AppOptions {
  @Flag()
  verbose = false
}

@Command('build')
class BuildCommand {
  @Flag()
  verbose = false

  @Handler()
  run() {}
}

@Module({ commands: [BuildCommand], options: [AppOptions] })
class AppModule {}

createApp(AppModule)

How to fix it

Rename or remove an accidental duplicate. If a Command or feature @Option() field intentionally replaces an outer field, add @Override() to that field as well. A feature action that replaces a root @OptionCommand uses overrideAll: true.

An override changes which field owns the public token. It does not copy the user’s value into the hidden outer field.