Type alias ReadResult<T, E>

ReadResult<T, E>: {
    data: undefined;
    error: undefined;
    loading: true;
} | {
    data: T;
    error: undefined;
    loading: false;
} | {
    data: undefined;
    error: E;
    loading: false;
}

A discriminated union of the possible results of a read operation.

You can rely on the loading value to determine if the data or error can be evaluated.