const WATCH_FILE_KEY = '__oneWatchFile'

/**
 * Notifies One's HMR system about a file dependency.
 * When One is present, this enables automatic hot reload when the file changes.
 * No-op when One is not present or in production.
 */
export function notifyFileRead(filePath: string): void {
  const watchFile = globalThis[WATCH_FILE_KEY] as ((path: string) => void) | undefined
  if (watchFile) {
    watchFile(filePath)
  }
}