node_modules/@nestjs/common/interfaces/hooks/on-init.interface.d.ts

/**
 * Interface defining method called once the host module has been initialized.
 *
 * @see [Lifecycle Events](https://docs.nestjs.com/fundamentals/lifecycle-events)
 *
 * @publicApi
 */
export interface OnModuleInit {
    onModuleInit(): any;
}