refactor(server): date helper to static class

server/src/core/http-server/server.js

@@ -27,7 +27,7 @@ import keyMidd from '@/core/http-server/plugins/key'
 import infoPlugin from '@/core/http-server/api/info'
 import downloadsPlugin from '@/core/http-server/api/downloads'
 import { LOG } from '@/helpers/log'
-import { DATE } from '@/helpers/date'
+import { DateHelper } from '@/helpers/date-helper'
 
 const server = {}
 
@@ -378,7 +378,7 @@ server.init = async () => {
   LOG.success(`The current env is ${process.env.LEON_NODE_ENV}`)
   LOG.success(`The current version is ${version}`)
 
-  LOG.success(`The current time zone is ${DATE.getTimeZone()}`)
+  LOG.success(`The current time zone is ${DateHelper.getTimeZone()}`)
 
   const sLogger = !HAS_LOGGER ? 'disabled' : 'enabled'
   LOG.success(`Collaborative logger ${sLogger}`)

server/src/helpers/date-helper.ts

@@ -8,20 +8,12 @@ import { LOG } from '@/helpers/log'
 dayjs.extend(utc)
 dayjs.extend(timezone)
 
-class DateHelper {
-  private static instance: DateHelper
-
-  constructor() {
-    if (DateHelper.instance == null) {
-      DateHelper.instance = this
-    }
-  }
-
+export class DateHelper {
   /**
    * Get date time
    * @example getDateTime() // 2022-09-12T12:42:57+08:00
    */
-  public getDateTime() {
+  public static getDateTime() {
     return dayjs().tz(this.getTimeZone()).format()
   }
 
@@ -29,7 +21,7 @@ class DateHelper {
    * Get time zone
    * @example getTimeZone() // Asia/Shanghai
    */
-  public getTimeZone() {
+  public static getTimeZone() {
     let { timeZone } = Intl.DateTimeFormat().resolvedOptions()
 
     if (TIME_ZONE) {
@@ -47,5 +39,3 @@ class DateHelper {
     return timeZone as string
   }
 }
-
-export const DATE = new DateHelper()

server/src/helpers/log.ts

@@ -2,7 +2,7 @@ import fs from 'node:fs'
 import path from 'node:path'
 
 import { IS_TESTING_ENV } from '@/constants'
-import { DATE } from '@/helpers/date'
+import { DateHelper } from '@/helpers/date-helper'
 
 class LogHelper {
   static readonly ERRORS_PATH = path.join(
@@ -54,7 +54,7 @@ class LogHelper {
    * Log message on stderr and write in error log file
    */
   public error(value: string) {
-    const data = `${DATE.getDateTime()} - ${value}`
+    const data = `${DateHelper.getDateTime()} - ${value}`
 
     if (!IS_TESTING_ENV) {
       if (fs.existsSync(LogHelper.ERRORS_PATH)) {

test/unit/server/helpers/date.spec.js

@@ -1,11 +1,11 @@
 import moment from 'moment-timezone'
 
-import { DATE } from '@/helpers/date'
+import { DateHelper } from '@/helpers/date-helper'
 
 describe('date helper', () => {
   describe('dateTime()', () => {
     test('returns date time with UTC', () => {
-      expect(DATE.getDateTime()).toBe(
+      expect(DateHelper.getDateTime()).toBe(
         moment().tz(global.date.time_zone).format()
       )
     })
@@ -13,7 +13,7 @@ describe('date helper', () => {
 
   describe('timeZone()', () => {
     test('returns time zone', () => {
-      expect(DATE.getTimeZone()).toBe(global.date.time_zone)
+      expect(DateHelper.getTimeZone()).toBe(global.date.time_zone)
     })
   })
 })