How to use the npm-bundled.BundleWalker function in npm-bundled

'use strict'

// Do a two-pass walk, first to get the list of packages that need to be
// bundled, then again to get the actual files and folders.
// Keep a cache of node_modules content and package.json data, so that the
// second walk doesn't have to re-do all the same work.

const bundleWalk = require('npm-bundled')
const BundleWalker = bundleWalk.BundleWalker
const BundleWalkerSync = bundleWalk.BundleWalkerSync

const ignoreWalk = require('ignore-walk')
const IgnoreWalker = ignoreWalk.Walker
const IgnoreWalkerSync = ignoreWalk.WalkerSync

const rootBuiltinRules = Symbol('root-builtin-rules')
const packageNecessaryRules = Symbol('package-necessary-rules')
const path = require('path')

const normalizePackageBin = require('npm-normalize-package-bin')

// Weird side-effect of this: a readme (etc) file will be included
// if it exists anywhere within a folder with a package.json file.
// The original intent was only to include these files in the root,
// but now users in the wild are dependent on that behavior for

'use strict'

// Do a two-pass walk, first to get the list of packages that need to be
// bundled, then again to get the actual files and folders.
// Keep a cache of node_modules content and package.json data, so that the
// second walk doesn't have to re-do all the same work.

const bundleWalk = require('npm-bundled')
const BundleWalker = bundleWalk.BundleWalker
const BundleWalkerSync = bundleWalk.BundleWalkerSync

const ignoreWalk = require('ignore-walk')
const IgnoreWalker = ignoreWalk.Walker
const IgnoreWalkerSync = ignoreWalk.WalkerSync

const rootBuiltinRules = Symbol('root-builtin-rules')
const packageNecessaryRules = Symbol('package-necessary-rules')
const path = require('path')

const normalizePackageBin = require('npm-normalize-package-bin')

const defaultRules = [
  '.npmignore',
  '.gitignore',
  '**/.git',

'use strict'

// Do a two-pass walk, first to get the list of packages that need to be
// bundled, then again to get the actual files and folders.
// Keep a cache of node_modules content and package.json data, so that the
// second walk doesn't have to re-do all the same work.

const bundleWalk = require('npm-bundled')
const BundleWalker = bundleWalk.BundleWalker
const BundleWalkerSync = bundleWalk.BundleWalkerSync

const ignoreWalk = require('ignore-walk')
const IgnoreWalker = ignoreWalk.Walker
const IgnoreWalkerSync = ignoreWalk.WalkerSync

const rootBuiltinRules = Symbol('root-builtin-rules')
const packageNecessaryRules = Symbol('package-necessary-rules')
const path = require('path')

const defaultRules = [
  '.npmignore',
  '.gitignore',
  '**/.git/',
  '**/.svn/',
  '**/.hg/',

* Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

'use strict'

// Do a two-pass walk, first to get the list of packages that need to be
// bundled, then again to get the actual files and folders.
// Keep a cache of node_modules content and package.json data, so that the
// second walk doesn't have to re-do all the same work.

const bundleWalk = require('npm-bundled')
const BundleWalker = bundleWalk.BundleWalker
const BundleWalkerSync = bundleWalk.BundleWalkerSync

const ignoreWalk = require('ignore-walk')
const IgnoreWalker = ignoreWalk.Walker
const IgnoreWalkerSync = ignoreWalk.WalkerSync

const rootBuiltinRules = Symbol('root-builtin-rules')
const packageNecessaryRules = Symbol('package-necessary-rules')
const path = require('path')

const normalizePackageBin = require('npm-normalize-package-bin')

const defaultRules = [
  '.npmignore',
  '.gitignore',
  '**/.git',

'use strict'

// Do a two-pass walk, first to get the list of packages that need to be
// bundled, then again to get the actual files and folders.
// Keep a cache of node_modules content and package.json data, so that the
// second walk doesn't have to re-do all the same work.

const bundleWalk = require('npm-bundled')
const BundleWalker = bundleWalk.BundleWalker
const BundleWalkerSync = bundleWalk.BundleWalkerSync

const ignoreWalk = require('ignore-walk')
const IgnoreWalker = ignoreWalk.Walker
const IgnoreWalkerSync = ignoreWalk.WalkerSync

const rootBuiltinRules = Symbol('root-builtin-rules')
const packageNecessaryRules = Symbol('package-necessary-rules')
const path = require('path')

const defaultRules = [
  '.npmignore',
  '.gitignore',
  '**/.git',
  '**/.svn',
  '**/.hg',