create-new-app/modules/safeToCreateDir.js

Easily generate a new React application, optionally with Express & MongoDB.

/*
  This module checks if the directory we want to
  install the app in already exists or not.
*/

const {existsSync} = require('fs-extra')
const chalk = require('chalk')
let shouldWarn = true // Scream only once.

function safeToCreateDir({appDir, appName, force}) {
  if (!existsSync(appDir)) return true
  if (force) {
    shouldWarn &&
      console.log(
        `Force installing in pre-existing directory ${chalk.green(appName)}...`,
      )
    shouldWarn = false
    return true
  }

  console.log(`The directory ${chalk.green(appName)} already exists.`)
  console.log('Try a different name.')
}

module.exports = safeToCreateDir