import fs from 'fs'
import { promisify } from 'util'

const access = promisify(fs.access)

export async function fileExists(fileName: string): Promise<boolean> {
  try {
    await access(fileName, fs.constants.F_OK)
    return true
  } catch (err) {
    if (err.code === 'ENOENT') {
      return false
    }
    throw err
  }
}