Nuxt/packages/nuxi/src/cli.ts

import mri from 'mri'
import { red } from 'colorette'
import type { ConsolaReporter } from 'consola'
import consola from 'consola'
import { checkEngines } from './utils/engines'
import type { Command, NuxtCommand } from './commands'
import { commands } from './commands'
import { showHelp } from './utils/help'
import { showBanner } from './utils/banner'

async function _main () {
  const _argv = (process.env.__CLI_ARGV__ ? JSON.parse(process.env.__CLI_ARGV__) : process.argv).slice(2)
  const args = mri(_argv, {
    boolean: [
      'no-clear'
    ]
  })
  // @ts-ignore
  const command = args._.shift() || 'usage'

  showBanner(command === 'dev' && args.clear !== false && !args.help)

  if (!(command in commands)) {
    console.log('\n' + red('Invalid command ' + command))

    await commands.usage().then(r => r.invoke())
    process.exit(1)
  }

  // Check Node.js version in background
  setTimeout(() => { checkEngines().catch(() => {}) }, 1000)

  // @ts-ignore default.default is hotfix for #621
  const cmd = await commands[command as Command]() as NuxtCommand
  if (args.h || args.help) {
    showHelp(cmd.meta)
  } else {
    const result = await cmd.invoke(args)
    return result
  }
}

// Wrap all console logs with consola for better DX
consola.wrapAll()

// Filter out unwanted logs
// TODO: Use better API from consola for intercepting logs
const wrapReporter = (reporter: ConsolaReporter) => <ConsolaReporter> {
  log (logObj, ctx) {
    if (!logObj.args || !logObj.args.length) { return }
    const msg = logObj.args[0]
    if (typeof msg === 'string' && !process.env.DEBUG) {
      // Hide vue-router 404 warnings
      if (msg.startsWith('[Vue Router warn]: No match found for location with path')) {
        return
      }
      // Hide sourcemap warnings related to node_modules
      if (msg.startsWith('Sourcemap') && msg.includes('node_modules')) {
        return
      }
    }
    return reporter.log(logObj, ctx)
  }
}
// @ts-expect-error
consola._reporters = consola._reporters.map(wrapReporter)

process.on('unhandledRejection', err => consola.error('[unhandledRejection]', err))
process.on('uncaughtException', err => consola.error('[uncaughtException]', err))

export function main () {
  _main()
    .then((result) => {
      if (result === 'error') {
        process.exit(1)
      } else if (result !== 'wait') {
        process.exit()
      }
    })
    .catch((error) => {
      consola.error(error)
      process.exit(1)
    })
}