rsnext/packages/next/lib/eslint/writeOutputFile.ts

import { promises as fs } from 'fs'
import path from 'path'
import * as Log from '../../build/output/log'
import isError from '../../lib/is-error'

/**
 * Check if a given file path is a directory or not.
 * @param {string} filePath The path to a file to check.
 * @returns {Promise<boolean>} `true` if the path is a directory.
 */
async function isDirectory(filePath: string): Promise<boolean> {
  try {
    return (await fs.stat(filePath)).isDirectory()
  } catch (error) {
    if (
      isError(error) &&
      (error.code === 'ENOENT' || error.code === 'ENOTDIR')
    ) {
      return false
    }
    throw error
  }
}
/**
 * Create a file with eslint output data
 * @param {string} outputFile The name file that needs to be created
 * @param {string} outputData The data that needs to be inserted into the file
 */
export async function writeOutputFile(outputFile: string, outputData: string) {
  const filePath = path.resolve(process.cwd(), outputFile)

  if (await isDirectory(filePath)) {
    Log.error(
      `Cannot write to output file path, it is a directory: ${filePath}`
    )
  } else {
    try {
      await fs.mkdir(path.dirname(filePath), { recursive: true })
      await fs.writeFile(filePath, outputData)
      Log.info(`The output file has been created: ${filePath}`)
    } catch (err) {
      Log.error(`There was a problem writing the output file: ${filePath}`)
      console.error(err)
    }
  }
}