fix: make fetcher compactible for browsers

src/fetchers/index.ts

@@ -1,16 +1,46 @@
-import fs from 'fs'
-import path from 'path'
-
 type Language = 'en' | 'np'
 type Directory = 'districts' | 'provinces' | 'categories' | 'municipalities'
 
-export function fetcher(dir: Directory, lang: Language = 'en') {
+import districtsEn from '../../data/districts/en.json'
+import districtsNp from '../../data/districts/np.json'
+import provincesEn from '../../data/provinces/en.json'
+import provincesNp from '../../data/provinces/np.json'
+import categoriesEn from '../../data/categories/en.json'
+import categoriesNp from '../../data/categories/np.json'
+import municipalitiesEn from '../../data/municipalities/en.json'
+import municipalitiesNp from '../../data/municipalities/np.json'
+import { IDistrict } from '../entities/district'
+import { IProvince } from '../entities/province'
+import { IMunicipality } from '../entities/municipality'
+import { ICategory } from '../entities/category'
+
+const DATA_MAP = {
+	districts: { en: districtsEn, np: districtsNp },
+	provinces: { en: provincesEn, np: provincesNp },
+	categories: { en: categoriesEn, np: categoriesNp },
+	municipalities: { en: municipalitiesEn, np: municipalitiesNp },
+} as const
+
+export type DirectoryDataMap = {
+	districts: IDistrict[]
+	provinces: IProvince[]
+	municipalities: IMunicipality[]
+	categories: ICategory[]
+}
+
+export function fetcher<T extends Directory>(
+	dir: T,
+	lang: Language = 'en'
+): DirectoryDataMap[T] {
 	try {
-		const file = lang === 'np' ? 'np.json' : 'en.json'
-		const jsonPath = path.join(__dirname, `../../data/${dir}/${file}`)
-		const content = fs.readFileSync(jsonPath, 'utf-8')
-		return JSON.parse(content)
+		const data = DATA_MAP[dir][lang] as DirectoryDataMap[T]
+		if (!data) {
+			throw new Error(
+				`Data not found for directory: ${dir} and language: ${lang}`
+			)
+		}
+		return data
 	} catch (error) {
-		throw new Error(`Failed to load  data from source`)
+		throw new Error(`Failed to load data from source}`)
 	}
 }