Mine_MatchTargetPrice.js

private matchTargetPriceBucket(ruleSet: Models.IPricingTargetRuleSet, dayValue: number): number {
    if (ruleSet === null || ruleSet.Rules.length === 0) {
        console.error("No price buckets were provided.");
        return null;
    }

    if (!dayValue || dayValue < 0) {
        console.error("Invalid day value. Won't match any price target bucket.");
        return null;
    }

    var priceBucket = ruleSet.Rules
        .sort((a, b) => { return b.MatchValue - a.MatchValue; })
        .filter(x => { return dayValue >= x.MatchValue; })[0];

    return +((priceBucket.TargetMax + priceBucket.TargetMin) / 2).toFixed(2);
}

Yours_MatchTargetPrice.js

private matchTargetPriceBucket(ruleSet: Models.IPricingTargetRuleSet, value: number) : number {
    var priceBucket = ruleSet.Rules[0];
    var matchFound = false;

    //MDS match value for NA is -1
    if (ruleSet.Type === Models.PricingTargetType.Exact_Days_Supply && value === null)
        value = -1;

    ruleSet.Rules.some((rule) => {
        if (value <= rule.MatchValue) {
            matchFound = true;
            return true;
        }

        priceBucket = rule;
        return false;
    });

    // If no match was found, verify we're in the last bucket
    if (!matchFound && value >= priceBucket.MatchValue)
        matchFound = true;

    return matchFound ? +((priceBucket.TargetMax + priceBucket.TargetMin) / 2).toFixed(2) : null;
}