fix rebuild debouncing

quartz/bootstrap-cli.mjs

@@ -355,6 +355,7 @@ See the [documentation](https://quartz.jzhao.xyz) for how to get started.
       ],
     })
 
+    const timeoutIds = new Set()
     const build = async (clientRefresh) => {
       const result = await ctx.rebuild().catch((err) => {
         console.error(`${chalk.red("Couldn't parse Quartz configuration:")} ${fp}`)
@@ -380,6 +381,11 @@ See the [documentation](https://quartz.jzhao.xyz) for how to get started.
       clientRefresh()
     }
 
+    const rebuild = (clientRefresh) => {
+      timeoutIds.forEach((id) => clearTimeout(id))
+      timeoutIds.add(setTimeout(() => build(clientRefresh), 250))
+    }
+
     if (argv.serve) {
       const wss = new WebSocketServer({ port: 3001 })
       const connections = []
@@ -457,7 +463,7 @@ See the [documentation](https://quartz.jzhao.xyz) for how to get started.
         })
         .on("all", async () => {
           console.log(chalk.yellow("Detected a source code change, doing a hard rebuild..."))
-          await build(clientRefresh)
+          rebuild(clientRefresh)
         })
     } else {
       await build(() => {})