[fillTemplate]

fillTemplate.js

export const fillTemplate = (templateString, templateVars) => {
  return templateString ? templateString.replace(/{([^{}]*)}/g,
        function(a, b) {
            var r = templateVars[b];
            return typeof r === 'string' || typeof r === 'number' ? r : a;
        }
    ) : '';
};

////

const tyText = fillTemplate(thankYouTextTemplate, {Name: 'Alex', DealerName: 'Mersedes SPB'});
console.log(tyText);