import i18next from 'i18next';

i18next.init({
  lng: 'cs', 
  debug: true,
  resources: {
    cs: {
      translation: {
        "intlDateTime": "{{- val, datetime}}",
      }
    }
  }
});

setInterval(() => {
    for (let i= 0; i< 100_000; i++){
      i18next.t('intlDateTime', {val: new Date(), formatParams: { val: { 
year: 'numeric', 
month: 'long', 
day: 'numeric', 
hour: 'numeric', 
minute: 'numeric', 
second: 'numeric' ,
milisecond: 'numeric'
// ,faster: Math.random() // for faster simulation uncomment 
}}})
    }
}, 1);

// Mock with logging
function createCachedFormatter(fn) {
  var cache = {};
  return function invokeFormatter(val, lng, options) {
   console.log(`count of objects: ${Object.keys(cache).length}`, process.memoryUsage().heapUsed / 1024 / 1024);
    
    var key = lng + JSON.stringify(options);
    var formatter = cache[key];
    if (!formatter) {
      formatter = fn(lng, options);
      cache[key] = formatter;
    }
    return formatter(val);
  };
}