Suitescript summarize function for a Map/Reduce script

summarize-map-reduce-fn.js

const summarize = (summaryContext) => {
    log.debug({title: 'SUMMARY', details: summaryContext});
    if (summaryContext.inputSummary.error) {
        log.error({title: 'INPUT ERROR', details: summaryContext.inputSummary.error});
    }
    summaryContext.mapSummary.errors.iterator().each(
        (key, error) => {
            log.error({title: `MAP ERROR: ${key}`, details: error});
            return true;
        }
    );
    summaryContext.reduceSummary.errors.iterator().each(
        (key, error) => {
            log.error({title: `REDUCE ERROR: ${key}`, details: error});
            return true;
        }
    );
}