prettier.ts

#!/usr/bin/env ts-node

import * as Path from 'path'
import chalk from 'chalk'
import { spawnSync } from 'child_process'

const shouldFix = process.argv.indexOf('--fix') > -1

const root = Path.dirname(__dirname)

const prettier = process.platform === 'win32' ? 'prettier.cmd' : 'prettier'
const prettierPath = Path.join(root, 'node_modules', '.bin', prettier)

const args = [
  '**/*.{scss,y{,a}ml,html}',
  'app/**/*.{ts,tsx}',
  'script/**/*.ts',
  '--list-different',
]

if (shouldFix) {
  args.push('--write')
}

const result = spawnSync(prettierPath, args, {
  cwd: root,
})

if (!shouldFix && result.status > 0) {
  process.exitCode = result.status

  const fileList = result.stdout.toString().trim()

  if (fileList.length > 0) {
    console.log('These files are not formatted correctly:\n')

    console.log(result.stdout.toString())

    console.error(
      chalk`{bold.green → To fix these errors, run {underline yarn lint:prettier --fix}}`
    )
  } else {
    console.error('Something went wrong with invoking prettier:')
    console.error(result.stderr.toString())
  }
} else if (result.status < 0) {
  process.exitCode = result.status

  console.error('prettier returned an unexpected exit code')
  console.error(`stdout: '${result.stdout.toString()}'`)
  console.error(`stderr: '${result.stderr.toString()}'`)
}