How to use the napi-build-utils.isNapiRuntime function in napi-build-utils

function runGyp (opts, target, cb) {
  var args = ['node', 'index.js']
  if (opts.backend === 'node-ninja') {
    args.push('configure')
    args.push('build')
    args.push('--builddir=build/' + target)
  } else {
    args.push('rebuild')
  }
  if (napi.isNapiRuntime(opts.runtime)) {
    args.push('--napi_build_version=' + target)
  } else {
    args.push('--target=' + target)
  }
  args.push('--target_arch=' + opts.arch)
  if (opts.runtime === 'electron') {
    args.push('--runtime=electron')
    args.push('--dist-url=https://atom.io/download/electron')
  } else if (opts.runtime === 'node-webkit') {
    args.push('--runtime=node-webkit')
  } else if (opts.runtime === 'node') {
    // work around bug introduced in node 10's build https://github.com/nodejs/node-gyp/issues/1457
    args.push('--build_v8_with_gn=false')
    // work around the same kind of bug for node 11
    args.push('--enable_lto=false')
  }

function prebuild (opts, target, runtime, callback) {
  var pkg = opts.pkg
  var buildLog = opts.buildLog || function () {}
  opts.target = target
  opts.runtime = runtime

  if (opts.runtime === 'node-webkit') {
    opts.backend = 'nw-gyp'
  }

  var buildLogMessage = 'Preparing to prebuild ' + pkg.name + '@' + pkg.version + ' for ' + runtime + ' ' + target + ' on ' + opts.platform + '-' + opts.arch + ' using ' + opts.backend
  if (opts.libc && opts.libc.length > 0) buildLogMessage += 'using libc ' + opts.libc
  buildLog(buildLogMessage)

  // --target can be target or abi
  if (!napi.isNapiRuntime(runtime)) target = getTarget(target, runtime)
  var abi = getAbi(target, runtime)

  var tarPath = getTarPath(opts, abi)
  fs.stat(tarPath, function (err, st) {
    if (!err && !opts.force) {
      buildLog(tarPath + ' exists, skipping build')
      return callback(null, tarPath)
    }
    var tasks = [
      function (cb) {
        build(opts, target, function (err, filenames) {
          if (err) return cb(err)
          cb(null, filenames)
        })
      },
      function (filenames, cb) {

help: 'h',
      arch: 'a',
      path: 'p',
      version: 'v',
      download: 'd',
      'build-from-source': 'compile',
      compile: 'c',
      token: 'T'
    }
  }))

  if (rc.path === true) {
    delete rc.path
  }

  if (napi.isNapiRuntime(rc.runtime) && rc.target === process.versions.node) {
    rc.target = napi.getBestNapiBuildVersion()
  }

  rc.abi = napi.isNapiRuntime(rc.runtime) ? rc.target : getAbi(rc.target, rc.runtime)

  return rc
}

download: 'd',
      'build-from-source': 'compile',
      compile: 'c',
      token: 'T'
    }
  }))

  if (rc.path === true) {
    delete rc.path
  }

  if (napi.isNapiRuntime(rc.runtime) && rc.target === process.versions.node) {
    rc.target = napi.getBestNapiBuildVersion()
  }

  rc.abi = napi.isNapiRuntime(rc.runtime) ? rc.target : getAbi(rc.target, rc.runtime)

  return rc
}

force: 'f',
    version: 'v',
    upload: 'u',
    preinstall: 'i',
    prepack: 'c'
  },
  string: [
    'target'
  ]
}))

if (rc.path === true) {
  delete rc.path
}

if (napi.isNapiRuntime(rc.runtime) && rc.target === process.versions.node) {
  if (rc.all === true) {
    rc.target = napi.getNapiBuildVersions()
  } else {
    rc.target = napi.getBestNapiBuildVersion()
  }
}

if (rc.target) {
  var arr = [].concat(rc.target)
  rc.prebuild = []
  for (var k = 0, len = arr.length; k < len; k++) {
    if (!napi.isNapiRuntime(rc.runtime) || napi.isSupportedVersion(arr[k])) {
      rc.prebuild.push({
        runtime: rc.runtime,
        target: arr[k]
      })