Function watch

packages/node/src/node-runtime.ts:52–79

(options)

      return fsExtra.ensureDirSync(path)
    },
    watch(options) {
      const { include, exclude, cwd, poll } = options
      const coalesce = poll || process.platform === 'win32'

      const dirnames = globDirname(include)
      const isValidPath = picomatch(include, { cwd, ignore: exclude })
      const workingDir = cwd || process.cwd()

      const watcher = chokidar.watch(dirnames, {
        usePolling: poll,
        cwd,
        ignored(path, stats) {
          const relativePath = relative(workingDir, path)
          return !!stats?.isFile() && !isValidPath(relativePath)
        },
        ignoreInitial: true,
        ignorePermissionErrors: true,
        awaitWriteFinish: coalesce ? { stabilityThreshold: 50, pollInterval: 10 } : false,
      })

      logger.debug('watch:file', `Watching [ ${dirnames.join(', ')} ]`)

      process.once('SIGINT', async () => {
        await watcher.close()
      })

      return watcher
    },
  },
}