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TypeError: Cannot read property 'Symbol(duplicates)' of undefined

See original GitHub issue

getDuplicates fails with this when i use browserify --no-bundle-external.

  return row[kDuplicates] || []

TypeError: Cannot read property 'Symbol(duplicates)' of undefined
    at getDuplicates (/home/arch/Code/goto-bus-stop/common-shakeify/index.js:214:14)
    at analyzer.modules.forEach (/home/arch/Code/goto-bus-stop/common-shakeify/index.js:115:21)

Issue Analytics

  • State:closed
  • Created 6 years ago
  • Comments:8 (4 by maintainers)

github_iconTop GitHub Comments

goto-bus-stopcommented, Oct 15, 2017

Ahh I see, so common-shakeify breaks when using -r. there’s nothing wrong with how you’re using it. i’ll try to fix in #11

AVVScommented, Feb 6, 2018

Same error on 0.4.5, but my config is quite weird, maybe I should do something better or doing something wrong, but I cant see what it could possibly be

[17:59:56] TypeError: Cannot read property 'Symbol(duplicates)' of undefined
    at getDuplicates (/Users/vitaly/projects/cappasity-player/node_modules/common-shakeify/index.js:222:13)
    at analyzer.modules.forEach (/Users/vitaly/projects/cappasity-player/node_modules/common-shakeify/index.js:121:21)
    at Map.forEach (<anonymous>)
    at DestroyableTransform.onend [as _flush] (/Users/vitaly/projects/cappasity-player/node_modules/common-shakeify/index.js:118:22)
    at DestroyableTransform.<anonymous> (/Users/vitaly/projects/cappasity-player/node_modules/readable-stream/lib/_stream_transform.js:138:49)
    at Object.onceWrapper (events.js:255:19)
    at DestroyableTransform.emit (events.js:160:13)
    at prefinish (/Users/vitaly/projects/cappasity-player/node_modules/readable-stream/lib/_stream_writable.js:596:14)
    at finishMaybe (/Users/vitaly/projects/cappasity-player/node_modules/readable-stream/lib/_stream_writable.js:604:5)
    at endWritable (/Users/vitaly/projects/cappasity-player/node_modules/readable-stream/lib/_stream_writable.js:615:3)
    at DestroyableTransform.Writable.end (/Users/vitaly/projects/cappasity-player/node_modules/readable-stream/lib/_stream_writable.js:571:41)
    at Labeled.<anonymous> (/Users/vitaly/projects/cappasity-player/node_modules/stream-splicer/index.js:43:26)
    at Object.onceWrapper (events.js:255:19)
    at Labeled.emit (events.js:165:20)
    at finishMaybe (/Users/vitaly/projects/cappasity-player/node_modules/readable-stream/lib/_stream_writable.js:607:14)
    at endWritable (/Users/vitaly/projects/cappasity-player/node_modules/readable-stream/lib/_stream_writable.js:615:3)
// external
const external = config.external = [
  // 'babel-runtime',

const options = {
  paths: ['node_modules', 'src'],
  debug: true,
  fullPaths: false,
  cache: {},
  packageCache: {},
  builtins: {
    ...omit(builtins, 'buffer'),
    vm: require.resolve('browserify/lib/_empty'),
  noParse: ['three', 'bluebird'],
  externalRequireName: '_der_',
  require: external.slice(3), /* excludes three.js **, buffer */
  external: external.slice(2, 3), /* buffer */
  plugin: [],
  entries: ['./src/raven.js'],

const Vendor = browserify(options);

bundler.transform('envify', {

bundler.transform('babelify', { global: true });

// uses tinyify under the hood, just remapped uglify options and made some opts
// configurable
bundler.plugin('./vendor/tinyify', {
      uglify: config.uglify,
      shake: true,
      flat: true,
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