Remove unused functions and luxon

.changeset/pretty-fireants-taste.md

@@ -2,4 +2,4 @@
 '@backstage/plugin-catalog': patch
 ---
 
-Migrated the package from using moment to Luxon. #4278
+Removed unused functions and the moment library. #4278

plugins/catalog/package.json

@@ -42,7 +42,6 @@
     "@types/react": "^16.9",
     "classnames": "^2.2.6",
     "git-url-parse": "^11.4.4",
-    "luxon": "^1.25.0",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
     "react-helmet": "6.1.0",

plugins/catalog/src/components/CatalogPage/utils/timeUtil.js

@@ -14,36 +14,10 @@
  * limitations under the License.
  */
 
-import { DateTime } from 'luxon';
 import goodMorning from './locales/goodMorning.locales.json';
 import goodAfternoon from './locales/goodAfternoon.locales.json';
 import goodEvening from './locales/goodEvening.locales.json';
 
-/**
- * Validates that a date is a valid ISO string.
- *
- * @param date A date string
- * @returns {bool} Whether the date is valid or not.
- */
-export function isValidDate(date) {
-  return DateTime.fromISO(date).isValid;
-}
-
-/**
- * Validates that a date is a valid ISO string and a specific format.
- *
- * @param date A date string
- * @param format A format string to validate against. See https://moment.github.io/luxon/docs/manual/parsing.html#table-of-tokens for reference.
- * @returns {bool} Whether the date is valid or not according to the format.
- */
-export function isValidDateAndFormat(date, format) {
-  return DateTime.fromFormat(date, format).isValid;
-}
-
-export function relativeTime(timestamp) {
-  return DateTime.fromISO(timestamp).toRelative();
-}
-
 // Select a large random integer at startup, to prevent the greetings to change every time the user
 // navigates.
 const greetingRandomSeed = Math.floor(Math.random() * 1000000);

plugins/catalog/src/components/CatalogPage/utils/timeUtil.test.js

@@ -19,25 +19,6 @@ import {
   isValidDateAndFormat,
   getTimeBasedGreeting,
 } from './timeUtil';
-import { DateTime } from 'luxon';
-
-it('validate isValidDate', () => {
-  expect(isValidDate(DateTime.local().toISO())).toBeTruthy();
-  expect(isValidDate('2021-02-04 15:00:10')).toBeFalsy();
-});
-
-it('validates time format', () => {
-  const valid = isValidDateAndFormat(
-    '1970-01-01 00:00:00',
-    'yyyy-MM-dd hh:mm:ss',
-  );
-  const invalid = isValidDateAndFormat(
-    '1970-01-01T00:00:00',
-    'yyyy-MM-ddThh:mm:ss',
-  );
-  expect(valid).toBeTruthy();
-  expect(invalid).toBeFalsy();
-});
 
 it('has greeting and language', () => {
   const greeting = getTimeBasedGreeting();