feat: specify lang via cli

docs/en/start.mdx

@@ -1,5 +1,5 @@
 ---
-sourceSHA: 166fda7d9b168a1be0333c3b744b7dffb18ccbd32f7f9c6da426ce4c980b4b8a
+sourceSHA: fa1b3035de2eb1166334fa4c487575bc32fe4886a888be9b9a5efbf7486044cb
 ---
 
 # Getting Started \{#start}
@@ -104,6 +104,7 @@ Options:
   -a, --algolia [boolean|alauda]      Whether to enable or use the alauda (docs.alauda.io) preset for Algolia search (default: false)
   -S, --site-url                      Whether to enable the siteUrl for sitemap generation (default: false)
   -n, --no-open                       Do not open the browser after starting the server
+  --lang <language>                   Specify the language of the documentation
   -h, --help                          display help for command
 
 Commands:

docs/zh/start.mdx

@@ -100,6 +100,7 @@ Options:
   -a, --algolia [boolean|alauda]      Whether to enable or use the alauda (docs.alauda.io) preset for Algolia search (default: false)
   -S, --site-url                      Whether to enable the siteUrl for sitemap generation (default: false)
   -n, --no-open                       Do not open the browser after starting the server
+  --lang <language>                   Specify the language of the documentation
   -h, --help                          display help for command
 
 Commands:

packages/doom/src/cli/index.ts

@@ -114,6 +114,7 @@ program
     false,
   )
   .option('-n, --no-open', 'Do not open the browser after starting the server')
+  .option('--lang <language>', 'Specify the language of the documentation')
   .command('dev', { isDefault: true })
   .description('Start the development server')
   .argument('[root]', 'Root directory of the documentation')

packages/doom/src/cli/load-config.ts

@@ -132,6 +132,7 @@ const getCommonConfig = async ({
   editRepo,
   algolia,
   siteUrl,
+  lang,
 }: {
   config: UserConfig
   configFilePath?: string
@@ -150,7 +151,12 @@ const getCommonConfig = async ({
   editRepo?: boolean | string
   algolia?: boolean | 'alauda' | 'alauda-ru'
   siteUrl?: boolean
+  lang?: string
 }): Promise<UserConfig> => {
+  if (lang != null) {
+    config.lang = lang
+  }
+
   const fallbackToZh = 'lang' in config && !config.lang
   root = resolveDocRoot(root, config.root)
   const localBasePath = configFilePath ? path.dirname(configFilePath) : root
@@ -410,6 +416,7 @@ export async function loadConfig(
     editRepo,
     algolia,
     siteUrl,
+    lang,
   }: GlobalCliOptions = {},
 ): Promise<{
   config: UserConfig
@@ -495,6 +502,7 @@ export async function loadConfig(
     editRepo,
     algolia,
     siteUrl,
+    lang,
   })
 
   base = commonConfig.base!

packages/doom/src/types.ts

@@ -32,6 +32,7 @@ export interface GlobalCliOptions {
   editRepo?: boolean | string
   algolia?: boolean | 'alauda'
   siteUrl?: boolean
+  lang?: string
 }
 
 export interface TranslateOptions {