'Parcel SemVer bug

So, I've used Parcel multiple times before and I've never had an issue with it. This time it throws some stupid errors about SemVer versioning and I'm literally loosing my mind trying to find a solution which would fix this problem.

I've started new project: installed npm w/ npm init (no additional options), then installed parcel npm install --save-dev parcel-bundler and then created my folder structure:

--node_modules
--index.html
--index.js

Here is my package.json:

{
  "name": "playground",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "dev": "parcel index.html"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "parcel-bundler": "^1.12.4"
  }
}

I've configured default npm script to run parcel: "dev": "parcel index.html" and run it. Everything works fine, however when I connect my index.js in index.html via <script src="/index.js"></script> it throws big fat error, saying:

D:\workingSpace\playground\index.js: Invalid Version: undefined
  at new SemVer (D:\workingSpace\playground\node_modules\@babel\preset-env\node_modules\semver\semver.js:314:11)
  at compare (D:\workingSpace\playground\node_modules\@babel\preset-env\node_modules\semver\semver.js:647:10)   
  at lt (D:\workingSpace\playground\node_modules\@babel\preset-env\node_modules\semver\semver.js:688:10)        
  at D:\workingSpace\playground\node_modules\@babel\preset-env\lib\index.js:276:22
  at Object.default (D:\workingSpace\playground\node_modules\@babel\helper-plugin-utils\lib\index.js:22:12)     
  at getEnvPlugins (D:\workingSpace\playground\node_modules\parcel-bundler\src\transforms\babel\env.js:62:34)   
  at getEnvConfig (D:\workingSpace\playground\node_modules\parcel-bundler\src\transforms\babel\env.js:12:25)    
  at async getBabelConfig (D:\workingSpace\playground\node_modules\parcel-bundler\src\transforms\babel\config.js:32:19)
  at async babelTransform (D:\workingSpace\playground\node_modules\parcel-bundler\src\transforms\babel\transform.js:6:16)
  at async JSAsset.pretransform (D:\workingSpace\playground\node_modules\parcel-bundler\src\assets\JSAsset.js:83:5)

Currently I'm using Node v14.6.0 and accordingly it's npm version - 6.14.11

I've never faced this bug before, please help T_T

node.jsnode-modulessemantic-versioningparceljs


Solution 1:[1]

I have recently went through this issue, where [email protected] kept throwing Invalid Version: undefined even after trying a very logical workound posted on GitHub #5943.

Installing parcelV2 worked in my case. If anyone else is facing a similar problem, I would recommend trying the following steps:

  1. npm uninstall -D parcel-bundler
  2. npm install -D parcel@next
  3. npx parcel serve index.html

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Kh.Nomani

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