igpapi — Instagram private API Simulator for Node.js (API reference) 4.14.0
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    Variable TypeaheadUnknownResultItemConst

    TypeaheadUnknownResultItem: ScreenItemDefinition<
        "SearchInputUnknownResult",
        {
            __typename: "unknown";
            item: { kind: "unknown"; kindKey?: string; raw: Json };
            key: string;
        },
        {
            __typename: "unknown";
            item: { kind: "unknown"; kindKey?: string; raw: Json };
            key: string;
        },
        Record<never, never>,
        never,
        never,
        TypeaheadUnknownResultItemActions,
        undefined,
        never,
        never,
    > = ...

    A result of a class the library does not model: the stream is an open union, so the row keeps the explicit unknown item (item.kindKey is the __typename the server named, item.raw the result as it came). It sends nothing.