使用 tsconfig.json 配置文件监视

{
  // Some typical compiler options
  "compilerOptions": {
    "target": "es2020",
    "moduleResolution": "node"
    // ...
  },

  // NEW: Options for file/directory watching
  "watchOptions": {
    // Use native file system events for files and directories
    "watchFile": "useFsEvents",
    "watchDirectory": "useFsEvents",

    // Poll files for updates more frequently
    // when they're updated a lot.
    "fallbackPolling": "dynamicPriority",

    // Don't coalesce watch notification
    "synchronousWatchDirectory": true,

    // Finally, two additional settings for reducing the amount of possible
    // files to track  work from these directories
    "excludeDirectories": ["**/node_modules", "_build"],
    "excludeFiles": ["build/fileWhichChangesOften.ts"]
  }
}

您可以在 发行说明 中阅读更多相关信息。

You can read more about this in the release notes.