I have encountered this issue on many places after some days of updating from Angular 8 to Angular 9. Earlier it was working fine.
Can anyone help me what's the problem. Example code below
list.reduce((acc, curr) => {
const obj = {};
obj['x'] = curr['Y'];
});
I refer change list of Ngrx version 8 to 9 and migration guideline here
https://ngrx.io/guide/migration/v9
As I found there is a special change related to immutability with angular 9. They have defined Action, state and serializability related immutability logic there. And I tried out the method that they have suggested to resolve those issues with Ngrx V9 update here
https://ngrx.io/guide/store/configuration/runtime-checks
@ngrx/store ships with five (5) built-in runtime checks. Try disabled all checks
If you are getting this error after using NgRx in Angular. Try implementing below code it will help on a global level. Otherwise you can utilize deep cloning of Object or Array to eradicate the problem.
@NgModule({
imports: [
StoreModule.forRoot(reducers, {
runtimeChecks: {
strictStateImmutability: false,
strictActionImmutability: false,
},
}),
],
})
export class AppModule {}