Cacher is the code snippet organizer for pro developers

var source = 'Straßen';
var sourceLanguage = 'de';

var translations = [
  {de: 'Straßen', en: 'streets'},
  {de: 'Getränke', en: 'drinks'},
];

var filtered = translations.filter(function(translation) {
	if (translation[sourceLanguage] == source) {
  	return translation
  }
  return null;
});

console.log(filtered);