export function calculateRankingInfo()

in packages/tablesorter-powerbi/src/ConfigBuilder.ts [415:445]

• 29 lines of code
• 8 McCabe index (conditional complexity)

export function calculateRankingInfo(dataView: powerbi.DataView) {
    "use strict";
    if (dataView && dataView.table && dataView.table.rows) {
        const rankingColumnInfo = dataView.table.columns
            .map((n, i) => ({
                column: n,
                idx: i,
            }))
            .filter(n => n && isRankColumn(n.column))[0]; // Do the filter after, so the index is retained correctly
        if (rankingColumnInfo) {
            const values = Object.keys(
                dataView.table.rows
                    .reduce((a, b) => {
                        const rankValue = b[rankingColumnInfo.idx] as string;
                        if (rankValue !== null && rankValue !== undefined) { // tslint:disable-line
                            a[rankValue] = 1;
                        }
                        return a;
                    }, {}))
                    .map(n => parseFloat(n))

                    // Just an additional safety net, just in case for some reason invalid data gets through
                    .filter(n => !isNaN(n))
                    .sort(naturalSort);
            return {
                column: rankingColumnInfo.column,
                values,
            };
        }
    }
}