Type Alias TreeDiffItem

TreeDiffItem:
    | {
        action: "create";
        fractionalIndex: string;
        index: number;
        parent: TreeID
        | undefined;
        target: TreeID;
    }
    | {
        action: "delete";
        oldIndex: number;
        oldParent: TreeID
        | undefined;
        target: TreeID;
    }
    | {
        action: "move";
        fractionalIndex: string;
        index: number;
        oldIndex: number;
        oldParent: TreeID
        | undefined;
        parent: TreeID | undefined;
        target: TreeID;
    }