JS-Closures Example-1: Simpler APIs

simpler-apis.js

function createTranslation(lang) {
  const dictionary = {
    food: {
      en: "food",
      de: "essen",
    },
    apple: {
      en: "apple",
      de: "apfel",
    },
  };

  return function t(word) {
    return dictionary[word][lang];
  };
}

const en = createTranslation("en");
const de = createTranslation("de");

console.log(en("apple"), de("apple"));