Function insertViewItem

web/src/js/ducks/flows/_utils.ts:79–95

(
    prevView: T[],
    prevViewIndex: Map<string, number>,
    item: T,
    sort: Comparer<T>,
)

}

export function insertViewItem<T extends Item>(
    prevView: T[],
    prevViewIndex: Map<string, number>,
    item: T,
    sort: Comparer<T>,
): { view: T[]; _viewIndex: Map<string, number> } {
    const pos = findInsertPos(prevView, item, sort);

    const view = toSpliced(prevView, pos, 0, item);

    const _viewIndex = new Map(prevViewIndex);
    for (let i = view.length - 1; i >= pos; i--) {
        _viewIndex.set(view[i].id, i);
    }

    return { view, _viewIndex };
}

/// Find the insertion position in a sorted array.
export function findInsertPos<T>(