import type {
  Abstract,
  ClassProvider,
  DynamicModule,
  ExistingProvider,
  FactoryProvider,
  Type,
  ValueProvider,
} from '@nestjs/common';

export class Assert {
  static isObjectOrCtor(nestDefinition: unknown): nestDefinition is
    | DynamicModule
    | Type<any>
    | ClassProvider<any>
    | ValueProvider<any>
    | FactoryProvider<any>
    | ExistingProvider<any>
    | Abstract<any>
    // eslint-disable-next-line @typescript-eslint/ban-types
    | Function {
    return (
      ['object', 'function'].includes(typeof nestDefinition) &&
      nestDefinition !== null
    );
  }

  static isObject(v: unknown): v is object {
    return typeof v === 'object';
  }
}