@kayahr/observable

    Type Alias Observer<T>

    Observer: (NextObserver<T> | ErrorObserver | CompleteObserver) & {
        complete(value?: unknown): void;
        error(error: Error): void;
        next(value: T): void;
        start(subscription: Subscription): void;
    }

    Observer interface type. It is constructed as a union type to ensure that at least one of the next/error/complete properties is set.

    Type Parameters

    • T = unknown

    Type declaration

    • complete?: function
      • complete(value?: unknown): void

        Receives a completion notification.

        Parameters

        • Optionalvalue: unknown

          Optional completion value. This is not documented in the spec but used in the specs unit tests.

        Returns void

    • error?: function
      • error(error: Error): void

        Receives the sequence error.

        Parameters

        • error: Error

          The error.

        Returns void

    • next?: function
      • next(value: T): void

        Receives the next value in the sequence.

        Parameters

        • value: T

          The next value in the sequence. Undefined when observable doesn't have a value type.

        Returns void

    • start?: function
      • start(subscription: Subscription): void

        Receives the subscription object when subscribe is called.

        Parameters

        Returns void

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