getTranslationProc.js

getTranslationProc.js

/**
 * Proccess all the input array and calls `getTranslation` onEach row
 * @param {Array} arr, array of objects term to be translated in the shape of `{key:"", value:""}`, eg. `{key:"fullName", value:"Full name"}
 * @returns {Promise} resolved array is in the same shape as input
 */
const processTranslation = (arr, target = "de", api_key = process.env.GKEY) => {
  return new Promise((resolve) => {
    /**
     * 
     * @param {Array} arr input variables array. Terms to be translated.
     * @param {Array} book output variable array. Translated terms. 
     * @param {Integer} currentIndex of proccesing queue.
     */
    const convert = (arr, book = [], currentIndex = 0) =>
      currentIndex <= arr.length - 1
        ? getTranslation(arr[currentIndex], target, api_key).then(obj =>
            convert(arr, [...book, obj], currentIndex + 1)
          )
        : resolve(book);
    convert(arr);
  });
};