lint-changed.js

const childProcess = require('child_process')

const type = process.argv[2]
const currentBranch = 'git branch'

const diff = 'git diff --name-only --diff-filter=ACMTUXB origin/develop...HEAD'
const filter = `${diff} | grep app/.*\\.${type === 'css' ? 'sss$' : 'js$ | grep -v json'}`
const lint = type === 'css' ? 'stylelint $LIST --syntax sugarss' : 'eslint $LIST'
const condition = `if [ "$LIST" ]; then ./node_modules/.bin/${lint}; fi`
const command = [currentBranch, filter, `LIST=\`${filter}\``, condition].join('; ')

childProcess.exec(command, (err, stdout) => {
  console.error(stdout)
  if (err) {
    process.exit(1)
  }
})