angular-docs-cn/packages/core/schematics/migrations/module-with-providers/README.md

ModuleWithProviders migration

ModuleWithProviders type will not default to the any type for its generic in a future version of Angular. This migration adds a generic to any ModuleWithProvider types found.

Before

import { NgModule, ModuleWithProviders } from '@angular/core';

@NgModule({})
export class MyModule {
  static forRoot(): ModuleWithProviders {
    ngModule: MyModule
  }
}

After

import { NgModule, ModuleWithProviders } from '@angular/core';

@NgModule({})
export class MyModule {
  static forRoot(): ModuleWithProviders<MyModule> {
    ngModule: MyModule
  }
}