nhat-cli/cmds/init.js

The demo

const path = require('path')
const fs = require('fs')
const { bold, cyan } = require('kleur');
const figlet = require("figlet");
const center = require('center-align');

const cjsBpConfig = `
module.exports = {
  app: [{
    name: 'app',
    script: 'index.js'
  }]
}
`

const esBpConfig = `
export default {
  app: [{
    name: 'app',
    script: 'index.js'
  }]
}
`

exports.command = 'init <name>'
exports.builder = {
  rootDirectory: {
    default: process.cwd(),
    aliases: ['rootDir'],
    desc: 'Set root directory of a project'
  }
}

exports.describe = bold(cyan('Init config file in root directory'))

exports.handler = function (argv) {
  console.log(
    cyan(
      center(
        figlet.textSync("Blue Process", {
          font: "Ghost",
          horizontalLayout: "default",
          verticalLayout: "default",
          width: process.stdout.columns,
          whitespaceBreak: true
        }
      ), process.stdout.columns)
    ) + "\n\n"
  )
  console.log(
    center(
      "=".repeat(process.stdout.columns / 2),
      process.stdout.columns
    )
  )

  let projectCfg = JSON.parse(
    fs.readFileSync(
      path.join(argv.rootDirectory, "package.json"), 
      { encoding: 'utf-8' }
    )
  )
  console.log("projectCfg:", projectCfg)
  fs.writeFile(
    path.join(argv.rootDirectory, "bp.config.js"),
    ((!projectCfg.type || projectCfg.type === "commonjs") ? cjsBpConfig : esBpConfig),
    { encoding: 'utf-8' },
    (err) => {
      if (err) {
        throw new Error("Something failed")
      }

      console.log(cyan("Successfully initialize"))
    }
  )
}