perf(theme): 优化 frontmatter 自动生成

theme/src/node/autoFrontmatter/generator.ts

@@ -69,7 +69,7 @@ export async function generateAFrontmatter(app: App) {
   )
 }
 
-export async function watchAutoFrontmatter(app: App, watchers: any[]) {
+export async function watchAutoFrontmatter(app: App, watchers: any[], enable?: () => boolean) {
   if (!generate)
     return
 
@@ -80,7 +80,8 @@ export async function watchAutoFrontmatter(app: App, watchers: any[]) {
   })
 
   watcher.on('add', async (relativePath) => {
-    if (!generate!.globFilter(relativePath))
+    const enabled = enable ? enable() : true
+    if (!generate!.globFilter(relativePath) || !enabled)
       return
     const file = await readMarkdown(app.dir.source(), relativePath)
     await generator(file)

theme/src/node/loadConfig/loader.ts

@@ -41,13 +41,11 @@ export async function initConfigLoader(
   defaultConfig: ThemeConfig,
   { configFile, onChange }: InitConfigLoaderOptions = {},
 ) {
-  configFile = await findConfigPath(app, configFile)
-
   const { encrypt, autoFrontmatter, ...localeOptions } = defaultConfig
   loader = {
     configFile,
     dependencies: [],
-    load: () => compiler(configFile),
+    load: () => compiler(loader!.configFile),
     loaded: false,
     watcher: null,
     changeEvents: [],
@@ -60,6 +58,8 @@ export async function initConfigLoader(
     },
   }
 
+  loader.configFile = await findConfigPath(app, configFile)
+
   onChange && loader.changeEvents.push(onChange)
 
   const { config, dependencies = [] } = await loader.load()

theme/src/node/theme.ts

@@ -79,10 +79,10 @@ export function plumeTheme(options: PlumeThemeOptions = {}): Theme {
       onWatched: (app, watchers) => {
         watchConfigFile(app, watchers)
         watchPrepare(app, watchers)
-        const autoFrontmatter = getResolvedThemeConfig().autoFrontmatter ?? pluginOptions.frontmatter
-        if (autoFrontmatter !== false) {
-          watchAutoFrontmatter(app, watchers)
-        }
+        watchAutoFrontmatter(app, watchers, () => {
+          const autoFrontmatter = getResolvedThemeConfig().autoFrontmatter ?? pluginOptions.frontmatter
+          return autoFrontmatter !== false
+        })
       },
 
       extendsPage: async (page) => {