решение задач 2 модуля

02-javascript-data-types/1-sort-strings/index.js

@@ -5,5 +5,13 @@
  * @returns {string[]}
  */
 export function sortStrings(arr, param = 'asc') {
+  const newArr = arr.slice();
 
+  if (param == 'asc') {
+    newArr.sort((a, b) => a.localeCompare(b, ['ru-RU', 'en-US', 'en-GB'], {caseFirst: 'upper'}));
+  } else if (param == 'desc') {
+    newArr.sort((a, b) => b.localeCompare(a, ['ru-RU', 'en-US', 'en-GB'], {caseFirst: 'lower'}));
+  }
+
+  return newArr;
 }

02-javascript-data-types/2-pick/index.js

@@ -5,5 +5,9 @@
  * @returns {object} - returns the new object
  */
 export const pick = (obj, ...fields) => {
+  const result = {};
+
+  fields.map((item) => result[item] = obj[item]);
 
+  return result;
 };

02-javascript-data-types/3-omit/index.js

@@ -5,5 +5,9 @@
  * @returns {object} - returns the new object
  */
 export const omit = (obj, ...fields) => {
+  const newObj = obj;
+
+  fields.map((item) => delete newObj[item]);
 
+  return newObj;
 };