NGRX state 突變

Question

I am developing an enterprise Angular project using Angular CLI and NGRX version 10. Inside a component, I receive a state property via selector and then I change that object. 我沒有收到任何錯誤，這讓我感到困惑，因為 state 是不可變的，但它被靜音而沒有任何錯誤。

Answer 1

默認情況下，ngrx 不會檢測此類錯誤以提高性能。

如果您願意，可以在本地開發期間啟用它們：

@NgModule({
  imports: [
    StoreModule.forRoot(reducers, {
      runtimeChecks: {
        strictStateImmutability: true, // <- what you need
        strictActionImmutability: true, // <- what you need
        strictStateSerializability: true,
        strictActionSerializability: true,
        strictActionWithinNgZone: true,
        strictActionTypeUniqueness: true,
      },
    }),
  ],
})
export class AppModule {}

更多信息在這里： https://ngrx.io/guide/store/configuration/runtime-checks