Lodash examples

filter.js

/**
 * Get a range of hours from a period
 * @param {String='8','4-8','2-5-9'}
 * @example
 * // returns [4,5,6,7]
  * @returns {Number|Array} Returns an array of numbers without include the last hour
 */
let periodRange = (period)=> {
    let periodArray = period.split('-');
    return _.union(_.range(periodArray[0], periodArray[periodArray.length - 1]), [Number(periodArray[0])]);
};

let otherQuantities = _.filter(product.quantities, (q) => { 
    if(!(period.startDate <= q.period.endDate && period.endDate >= q.period.startDate)){
        return false;
    }
    if(!((period.dayType.normal && q.period.dayType.normal) || (period.dayType.holiday && q.period.dayType.holiday))){
        return false;
    }
    if(period.specificDays && q.period.specificDays && !_.intersection(q.period.specificDays, period.specificDays).length){
        return false;
    }
    if(period.specificPeriods){
        if(q.period.specificPeriods){
            let sharedPeriods = _.filter(q.period.specificPeriods, period1 => {
                let range1 = periodRange(period1);
                return period.specificPeriods.some(period2 => {                                         
                    let range2 = periodRange(period2);
                    return !!_.intersection(range1, range2).length;
                });
            });
            if(!sharedPeriods.length){
                return false;
            }
        }
        else{
            return false;
        }
    }
    else{
        if(!((period.loadType.high && q.period.loadType.high) || (period.loadType.medium && q.period.loadType.medium) || (period.loadType.low && q.period.loadType.low)))
            return false;  
    }
    if(currentQuantity && currentQuantity.index === index){
        return false;
    }
    if(newQuantity.companies && q.companies && !_.intersection(q.companies, newQuantity.companies).length){
        return false;
    }
    return true;
});