4front best practice update loadDictionaries ....

updateDictionaries.js

updateDictionaries() {
        let promise = this.api.getDictionaries(this.lastUpdatedDictionariesTimestamp).then(res => {
            let result = res.result;
            if (!this.lastUpdatedDictionariesTimestamp) {
              ....
            } else {
                this.applyChangesToMap(this.someMap, result.someMapData);
                ....
            }
            this.lastUpdatedDictionariesTimestamp = result.date;
        });