npx webpack – Cannot read property 'minify' of undefined

  • A+

I'm following the basic tutorial of webpack from this link :

when I run npx webpack it fails with the following error.

ERROR in main.js from Terser TypeError: Cannot read property 'minify' of undefined at minify (/Users/name/Documents/practice/webpack/webpack-demo/node_modules/terser-webpack-plugin/dist/minify.js:175:23) at module.exports (/Users/name/Documents/practice/webpack/webpack-demo/node_modules/terser-webpack-plugin/dist/worker.js:13:40) at handle (/Users/name/Documents/practice/webpack/webpack-demo/node_modules/worker-farm/lib/child/index.js:44:8) at process. (/Users/name/Documents/practice/webpack/webpack-demo/node_modules/worker-farm/lib/child/index.js:51:3) at process.emit (events.js:188:13) at emit (internal/child_process.js:828:12) at process.internalTickCallback (internal/process/next_tick.js:72:19)

  • node version: v11.6.0
  • npm version: 6.5.0-next.0
  • webpack version: 4.29.0
  • webpack-cli version: 3.2.1

folder structure

/dist   index.html /node_modules /src   index.js package-lock.json package.json 


<!doctype html> <html>   <head>     <title>Getting Started</title>   </head>   <body>     <script src="main.js"></script>   </body> </html> 


import _ from 'lodash';  function component() {   let element = document.createElement('div');   element.innerHTML = _.join(['hello', 'webpack'], ' ');   return element; }  document.body.appendChild(component()); 


{   "name": "webpack-demo",   "version": "1.0.0",   "description": "",   "private": true,   "scripts": {     "test": "echo /"Error: no test specified/" && exit 1"   },   "keywords": [],   "author": "",   "license": "ISC",   "devDependencies": {     "webpack": "^4.29.0",     "webpack-cli": "^3.2.1"   },   "dependencies": {     "lodash": "^4.17.11"   } }  


Ok got a solution from here:

it's a bug and you can fix it by installing terser v3.14

just simply run:

npm i -D terser@3.14 


:?: :razz: :sad: :evil: :!: :smile: :oops: :grin: :eek: :shock: :???: :cool: :lol: :mad: :twisted: :roll: :wink: :idea: :arrow: :neutral: :cry: :mrgreen: