rxjs subscriptions in Angular

When setting up a subscription in Angular, I am declaring it as follows:

counterSubscription: Subscription

However, an error is being thrown stating:

Property 'counterSubscription' has no initializer and is not definitely assigned in the constructor.

What would be the appropriate initial value for a Subscription object?

Answer №1

In case you are setting up your subscription within an angular lifecycle method, such as ngOnInit, you have the option to utilize the

Definite Assignment Assertion Operator
! which tells TypeScript that the variable will indeed be initialized.

counterSubscription!: Subscription;

Answer №2

If you want to prevent this behavior, consider including the

strictPropertyInitialization: false
rule in your tsconfig.json.

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