export function groupValues()

in src/dataViewTransform.ts [63:95]

• 24 lines of code
• 7 McCabe index (conditional complexity)

export function groupValues(values: DataViewValueColumn[]): DataViewValueColumnGroup[] {
    let groups: DataViewValueColumnGroup[] = [],
        currentGroup: DataViewValueColumnGroup;

    for (let i = 0, len = values.length; i < len; i++) {
        let value: DataViewValueColumn = values[i];

        if (!currentGroup || currentGroup.identity !== value.identity) {
            currentGroup = {
                values: []
            };

            if (value.identity) {
                currentGroup.identity = value.identity;

                let source: DataViewMetadataColumn = value.source;

                // allow null, which will be formatted as (Blank).
                if (source.groupName !== undefined) {
                    currentGroup.name = source.groupName;
                } else if (source.displayName) {
                    currentGroup.name = source.displayName;
                }
            }

            groups.push(currentGroup);
        }

        currentGroup.values.push(value);
    }

    return groups;
}