function useColumns()

in packages/bonito-ui/src/components/data-grid/data-grid.tsx [153:199]
46 lines of code
6 McCabe index (conditional complexity)

function useColumns<T>(
    columns: DataGridProps<T>["columns"],
    columnDefaultMaxWidth: DataGridProps["columnDefaultMaxWidth"]
): IColumn[] {
    const detailsListColumns = React.useMemo(() => {
        const detailsListCols: IColumn[] = [];
        if (columns) {
            let i = 1;
            for (const c of columns) {
                if (typeof c === "string") {
                    // Simple column names
                    detailsListCols.push({
                        key: `column${i++}`,
                        name: c,
                        fieldName: c,
                        onRender: (item) => autoFormat(item[c]),
                        minWidth: defaultColumnMinWidth,
                        maxWidth: columnDefaultMaxWidth,
                        isResizable: true,
                    });
                } else if (c.prop) {
                    // Column props
                    detailsListCols.push({
                        key: `column${i++}`,
                        name: c.label ?? c.prop,
                        fieldName: c.prop,
                        onRender:
                            c.onRender ??
                            ((item) =>
                                autoFormat(c.prop ? item[c.prop] : null)),
                        minWidth: c.minWidth ?? defaultColumnMinWidth,
                        maxWidth: c.maxWidth ?? columnDefaultMaxWidth,
                        isResizable: true,
                    });
                } else {
                    throw new Error(
                        "Invalid DataGrid column configuration: " +
                            JSON.stringify(c)
                    );
                }
            }
        }
        return detailsListCols;
    }, [columns, columnDefaultMaxWidth]);

    return detailsListColumns;
}