clear-package-json.js

#!/usr/bin/env node

const chalk = require('chalk')
const yargs = require('yargs')
const {
  clearPackageJSON
} = require('./core')
const {
  readJson,
  readJsonFromStdin,
  writeJson
} = require('./utils')
const getConfig = require('./get-config')

const { isTTY } = process.stdin
const { argv } = yargs
  .usage('$0')
  .command(
    isTTY
      ? '$0 <input> [options]'
      : '$0 [options]',
    'Clear package.json file',
    yargsCommand => {
      if (isTTY) {
        yargsCommand
          .positional('input', {
            type: 'string',
            desc: 'Input package.json file'
          })
          .require('input')
      }
    }
  )
  .option('fields', {
    type: 'array',
    desc: 'One or more exclude package.json fields'
  })
  .option('output', {
    alias: 'o',
    type: 'string',
    desc: 'Output file name'
  })

const options = {
  fields: argv.fields
}

function handleOptions () {
  if (!options.fields) {
    return getConfig().then(config => {
      options.fields = config.fields
    })
  }
  return Promise.resolve()
}

handleOptions()
  .then(() => (
    isTTY
      ? readJson(argv.input)
      : readJsonFromStdin()
  ))
  .then(packageJson => {
    const cleanPackageJSON = clearPackageJSON(packageJson, options.fields)
    if (argv.output) {
      return writeJson(
        argv.output,
        cleanPackageJSON,
        { spaces: 2 }
      )
    }
    process.stdout.write(`${ JSON.stringify(cleanPackageJSON, null, '  ') }\n`)
  })
  .catch(error => {
    console.error(chalk.red(error))
    process.exit()
  })