get keywords from api to avoid duplication, optimize some code

app/services/vacancies/vacancies.service.ts

@@ -1,7 +1,7 @@
-import { Vacancies, VacancyData } from '~/services/vacancies/vacancies.types'
+import { KeywordsResponse, Vacancies, VacancyData } from '~/services/vacancies/vacancies.types'
 
 export class VacanciesService {
-  baseUrl = 'https://vacancies-trends-api.andrii.es'
+  baseUrl = process.env.VACANCIES_API_URL ?? 'https://vacancies-trends-api.andrii.es'
 
   async getAll(): Promise<Vacancies> {
     return await fetch(`${this.baseUrl}/vacancies`).then(res => res.json())
@@ -13,13 +13,21 @@ export class VacanciesService {
       .then(this.formatDateOnData)
   }
 
-  formatDateOnData(data: VacancyData): VacancyData {
-    return data.map(item => {
+  async getKeywords(): Promise<KeywordsResponse> {
+    return await fetch(`${this.baseUrl}/vacancies/keywords`).then(res => res.json())
+  }
+
+  private formatDateOnData(data: VacancyData): VacancyData {
+    const mapped = data.data.map(item => {
       return {
         ...item,
         date: new Date(item.date).toLocaleDateString('ru'),
       }
     })
+    return {
+      ...data,
+      data: mapped,
+    }
   }
 }