Account for deprecated.json translation info file

src/app/services/DataFetcher.ts

@@ -3,6 +3,7 @@ import config from '../Config.js'
 import { Store } from '../Store.js'
 import { message } from '../Utils.js'
 import type { BlockStateRegistry, VersionId } from './Schemas.js'
+import { checkVersion } from './Schemas.js'
 
 const CACHE_NAME = 'misode-v2'
 const CACHE_LATEST_VERSION = 'cached_latest_version'
@@ -124,6 +125,9 @@ export async function fetchItemComponents(versionId: VersionId) {
 	console.debug(`[fetchItemComponents] ${versionId}`)
 	const version = config.versions.find(v => v.id === versionId)!
 	const result = new Map<string, Map<string, unknown>>()
+	if (!checkVersion(versionId, '1.20.5')) {
+		return result
+	}
 	try {
 		const data = await cachedFetch<Record<string, Record<string, unknown>>>(`${mcmeta(version, 'summary')}/item_components/data.min.json`)
 		for (const [id, components] of Object.entries(data)) {
@@ -267,11 +271,28 @@ async function loadImage(src: string) {
 }
 */
 
+interface DeprecatedInfo {
+	removed: string[]
+	renamed: Record<string, string>
+}
+
 export async function fetchLanguage(versionId: VersionId, lang: string = 'en_us') {
 	const version = config.versions.find(v => v.id === versionId)!
 	await validateCache(version)
 	try {
-		return await cachedFetch<Record<string, string>>(`${mcmeta(version, 'assets')}/assets/minecraft/lang/${lang}.json`)
+		const translations = await cachedFetch<Record<string, string>>(`${mcmeta(version, 'assets')}/assets/minecraft/lang/${lang}.json`)
+		if (checkVersion(versionId, '1.21.2')) {
+			const deprecated = await cachedFetch<DeprecatedInfo>(`${mcmeta(version, 'assets')}/assets/minecraft/lang/deprecated.json`)
+			for (const key of deprecated.removed) {
+				delete translations[key]
+			}
+			for (const [oldKey, newKey] of Object.entries(deprecated.renamed)) {
+				const value = translations[oldKey]
+				delete translations[oldKey]
+				translations[newKey] = value
+			}
+		}
+		return translations
 	} catch (e) {
 		throw new Error(`Error occured while fetching language: ${message(e)}`)
 	}