refactor: hard-coded language map (#7360)

package.json

@@ -168,7 +168,6 @@
     "husky": "^9.1.7",
     "i18next": "^23.11.5",
     "jest-styled-components": "^7.2.0",
-    "linguist-languages": "^8.0.0",
     "lint-staged": "^15.5.0",
     "lodash": "^4.17.21",
     "lru-cache": "^11.1.0",

src/renderer/src/utils/__tests__/markdown.test.ts

@@ -146,15 +146,15 @@ describe('markdown', () => {
 
   describe('getExtensionByLanguage', () => {
     // 批量测试语言名称到扩展名的映射
-    const testLanguageExtensions = async (testCases: Record<string, string>) => {
+    const testLanguageExtensions = (testCases: Record<string, string>) => {
       for (const [language, expectedExtension] of Object.entries(testCases)) {
-        const result = await getExtensionByLanguage(language)
+        const result = getExtensionByLanguage(language)
         expect(result).toBe(expectedExtension)
       }
     }
 
-    it('should return extension for exact language name match', async () => {
+    it('should return extension for exact language name match', () => {
-      await testLanguageExtensions({
+      testLanguageExtensions({
         '4D': '.4dm',
         'C#': '.cs',
         JavaScript: '.js',
@@ -166,8 +166,8 @@ describe('markdown', () => {
       })
     })
 
-    it('should return extension for case-insensitive language name match', async () => {
+    it('should return extension for case-insensitive language name match', () => {
-      await testLanguageExtensions({
+      testLanguageExtensions({
         '4d': '.4dm',
         'c#': '.cs',
         javascript: '.js',
@@ -179,8 +179,8 @@ describe('markdown', () => {
       })
     })
 
-    it('should return extension for language aliases', async () => {
+    it('should return extension for language aliases', () => {
-      await testLanguageExtensions({
+      testLanguageExtensions({
         js: '.js',
         node: '.js',
         'obj-c++': '.mm',
@@ -191,15 +191,15 @@ describe('markdown', () => {
       })
     })
 
-    it('should return fallback extension for unknown languages', async () => {
+    it('should return fallback extension for unknown languages', () => {
-      await testLanguageExtensions({
+      testLanguageExtensions({
         'unknown-language': '.unknown-language',
         custom: '.custom'
       })
     })
 
-    it('should handle empty string input', async () => {
+    it('should handle empty string input', () => {
-      await testLanguageExtensions({
+      testLanguageExtensions({
         '': '.'
       })
     })

src/renderer/src/utils/markdown.ts

@@ -1,3 +1,4 @@
+import { languages } from '@shared/config/languages'
 import remarkParse from 'remark-parse'
 import remarkStringify from 'remark-stringify'
 import removeMarkdown from 'remove-markdown'
@@ -54,16 +55,6 @@ export function removeTrailingDoubleSpaces(markdown: string): string {
   return markdown.replace(/ {2}$/gm, '')
 }
 
-const predefinedExtensionMap: Record<string, string> = {
-  html: '.html',
-  javascript: '.js',
-  typescript: '.ts',
-  python: '.py',
-  json: '.json',
-  markdown: '.md',
-  text: '.txt'
-}
-
 /**
  * 根据语言名称获取文件扩展名
  * - 先精确匹配，再忽略大小写，最后匹配别名
@@ -71,36 +62,26 @@ const predefinedExtensionMap: Record<string, string> = {
  * @param language 语言名称
  * @returns 文件扩展名
  */
-export async function getExtensionByLanguage(language: string): Promise<string> {
+export function getExtensionByLanguage(language: string): string {
   const lowerLanguage = language.toLowerCase()
 
-  // 常用的扩展名
-  const predefined = predefinedExtensionMap[lowerLanguage]
-  if (predefined) {
-    return predefined
-  }
-
-  const languages = await import('linguist-languages')
-
   // 精确匹配语言名称
-  const directMatch = languages[language as keyof typeof languages] as any
+  const directMatch = languages[language]
   if (directMatch?.extensions?.[0]) {
     return directMatch.extensions[0]
   }
 
   // 大小写不敏感的语言名称匹配
   for (const [langName, data] of Object.entries(languages)) {
-    const languageData = data as any
+    if (langName.toLowerCase() === lowerLanguage && data.extensions?.[0]) {
-    if (langName.toLowerCase() === lowerLanguage && languageData.extensions?.[0]) {
+      return data.extensions[0]
-      return languageData.extensions[0]
     }
   }
 
   // 通过别名匹配
   for (const [, data] of Object.entries(languages)) {
-    const languageData = data as any
+    if (data.aliases?.some((alias) => alias.toLowerCase() === lowerLanguage)) {
-    if (languageData.aliases?.includes(lowerLanguage)) {
+      return data.extensions?.[0] || `.${language}`
-      return languageData.extensions?.[0] || `.${language}`
     }
   }
 

yarn.lock

@@ -5688,7 +5688,6 @@ __metadata:
     i18next: "npm:^23.11.5"
     jest-styled-components: "npm:^7.2.0"
     jsdom: "npm:26.1.0"
-    linguist-languages: "npm:^8.0.0"
     lint-staged: "npm:^15.5.0"
     lodash: "npm:^4.17.21"
     lru-cache: "npm:^11.1.0"
@@ -11875,13 +11874,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"linguist-languages@npm:^8.0.0":
-  version: 8.0.0
-  resolution: "linguist-languages@npm:8.0.0"
-  checksum: 10c0/eaae46254247b9aa5b287ac98e062e7fe859314328ce305e34e152bc7bb172d69633999320cb47dc2a710388179712a76bb1ddd6e39e249af2684a4f0a66256c
-  languageName: node
-  linkType: hard
-
 "linkify-it@npm:^5.0.0":
   version: 5.0.0
   resolution: "linkify-it@npm:5.0.0"