Function ensureWatchedFile

packages/vite/src/node/utils.ts:738–754

(
  watcher: FSWatcher,
  file: string | null,
  root: string,
)

}

export function ensureWatchedFile(
  watcher: FSWatcher,
  file: string | null,
  root: string,
): void {
  if (
    file &&
    // only need to watch if out of root
    !file.startsWith(withTrailingSlash(root)) &&
    // some rollup plugins use null bytes for private resolved Ids
    !file.includes('\0') &&
    fs.existsSync(file)
  ) {
    // resolve file to normalized system path
    watcher.add(path.resolve(file))
  }
}

interface ImageCandidate {
  url: string