crc32 scope hoisting issue

[cybertelx]

🐛 bug report

I am using a library that depends on crc-32, and it hoists crc-32 even though it makes a dynamic export.

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

Config is all default.

🤔 Expected Behavior

crc-32 should not be scope hoisted.

😯 Current Behavior

crc-32 is scope hoisted.

Uncaught TypeError: Cannot read properties of undefined (reading 'exports')
    at Object.<anonymous> (:3000/index.8ed8d0c5.js:37:1858)
    at i (:3000/index.8ed8d0c5.js:1:455)
    at Object.<anonymous> (:3000/index.8ed8d0c5.js:36:706183)
    at i (:3000/index.8ed8d0c5.js:1:455)
    at Object.<anonymous> (:3000/index.8ed8d0c5.js:36:699702)
    at i (:3000/index.8ed8d0c5.js:1:455)
    at Object.<anonymous> (:3000/index.8ed8d0c5.js:36:622197)
    at i (:3000/index.8ed8d0c5.js:1:455)
    at Object.<anonymous> (:3000/index.8ed8d0c5.js:36:620491)
    at i (:3000/index.8ed8d0c5.js:1:455)

line 10. factory(exports) is causing it

if('object' === typeof exports) {
  factory(exports);
}

💁 Possible Solution

Not sure.

🔦 Context

I am trying to add something to a dapp (iKeen Finance), the issue causes the entire front-end to blank out and show nothing. This only started happening a day ago.

This bug is stalling the development of the frontend.

💻 Code Sample

https://github.com/ikeenfi/ikeen-frontend

🌍 Your Environment

I believe it might be a regression from a previous Parcel version, but I'm not sure.

Software	Version(s)
Parcel	2.4.1
Node	16.14.0
npm/Yarn	3.2.0 yarn
Operating System	Pop!_OS 20.04 (Ubuntu 20.04)

[mischnic]

Please provide a smaller reproduction.

[TechQuery]

@mischnic An if condition in source code is gone in bundled code, which causes this error:

@cybertelx 's description reminds me to disable Scope Hoisting, which works for my project:

parcel build src/index.html --no-scope-hoist

[mischnic]

Reproduction (happens only when wrapped):

if (Date.now() > 0) {
	const crc32 = require("crc-32"); // version 0.3.0

	const crcExpect = crc32.str("xyz");
	console.log(crcExpect);
}