parcel: length of undefined

🐛 bug report

🎛 Configuration (.babelrc, package.json, cli command)

{
  "name": "barcode_ball_panel",
  "version": "1.0.0",
  "description": "",
  "main": "out.js",
  "scripts": {
    "build": "parcel build --no-source-maps --public-url ./ index.html",
    "start": "parcel index.html",
    "clean": "rimraf dist",
    "nuke": "rimraf dist .cache"
  },
  "repository": {
    "type": "git",
    "url": "git+https://github.com/NikosEfthias/barcode_ball_panel.git"
  },
  "author": "",
  "license": "ISC",
  "bugs": {
    "url": "https://github.com/NikosEfthias/barcode_ball_panel/issues"
  },
  "homepage": "https://github.com/NikosEfthias/barcode_ball_panel#readme",
  "devDependencies": {
    "bs-platform": "^7.3.2",
    "bsb-js": "^1.1.7",
    "elm-hot": "^1.1.4",
    "eslint": "^6.8.0",
    "node-elm-compiler": "^5.0.4",
    "parcel-bundler": "^1.12.4",
    "rimraf": "^3.0.2"
  },
  "dependencies": {
    "bootstrap": "^4.5.0"
  }
}

🤔 Expected Behavior

parcelbundler used to build this project not i get an error it should just build fine as before since there are no updates to codebase

😯 Current Behavior

getting the following error

🚨  Cannot read property 'length' of undefined
    at lineCounter (/home/nikos/.projects/barcode_ball_panel/node_modules/parc
el-bundler/src/utils/lineCounter.js:3:30)
    at JSPackager.writeModule (/home/nikos/.projects/barcode_ball_panel/node_m
odules/parcel-bundler/src/packagers/JSPackager.js:127:60)
    at async JSPackager.addAsset (/home/nikos/.projects/barcode_ball_panel/nod
e_modules/parcel-bundler/src/packagers/JSPackager.js:88:5)
    at async Bundle._addDeps (/home/nikos/.projects/barcode_ball_panel/node_mo
dules/parcel-bundler/src/Bundle.js:250:5)
    at async Bundle._package (/home/nikos/.projects/barcode_ball_panel/node_mo
dules/parcel-bundler/src/Bundle.js:219:7)
    at async Promise.all (index 0)
    at async Bundle.package (/home/nikos/.projects/barcode_ball_panel/node_mod
ules/parcel-bundler/src/Bundle.js:202:5)
    at async Promise.all (index 1)
    at async Bundle.package (/home/nikos/.projects/barcode_ball_panel/node_mod
ules/parcel-bundler/src/Bundle.js:202:5)
    at async Promise.all (index 1)

💁 Possible Solution

No Clue

🔦 Context

💻 Code Sample

🌍 Your Environment

Software	Version(s)
Parcel	1.12.4
Node	14.1 and 12.18 both fails
npm/Yarn	6.14
Operating System	ubuntu focal

About this issue

Original URL
State: closed
Created 4 years ago
Reactions: 3
Comments: 20 (9 by maintainers)

Commits related to this issue

Downgrade parcel-bundler to 1.12.3 1.12.4 have bug https://github.com/parcel-bundler/parcel/issues/4691 — committed to jk195417/me by jk195417 3 years ago

Most upvoted comments

@danieltroger A source file with

let f = (v) => v?.variant;
console.log(f);

is enough to trigger this.

mischnic on Jan 13, 2021

I could build with parcel by doing the following steps :

remove my global parcel installation, (yarn global remove parcel-bundler)
install parcel locally (yarn add --dev parcel@next)
add "start": "parcel src/index.html" in scripts of package.json
use yarn start to run parcel (since the global parcel command is not available anymore)

arthursw on Jun 23, 2020

Does deleting the cache (.cache) help?

mischnic on Jun 5, 2020

Thanks. I guess I will try to migrate to parcel 2 slowly then so its correct to assume this bug on parcel 1 will not be fixed and parcel 1 is no longer maintained right ?

ta3pks on Jul 27, 2021

@mischnic I dont now why would you close this while it is clearly a bug. Again I am having the same issue and cleaning cache does not help this time

ta3pks on Jun 20, 2020