Terser v3.16.0 breaks terser-webpack-plugin

[pitops]

The latest terser update (released an hour ago) breaks this plugin.

• Operating System:
• Node Version: 10.12.0
• NPM Version: 6.4.1
• webpack Version: 4.29.0
• terser-webpack-plugin Version: 1.2.1

Expected Behavior

Terser to minify my code

Actual Behavior

ERROR in js/main.6e4faa1e7d31caf0fa3b.js from Terser
TypeError: Cannot read property 'minify' of undefined
    at minify (/<path>/node_modules/terser-webpack-plugin/dist/minify.js:175:23)

How Do We Reproduce?

Delete yarn.lock

Install terser-webpack-plugin and try to run a production build where the plugin is called

workaround

As a workaround for now if you use yarn you can add a resolution to a fixed terser version. Delete yarn.lock first and node_modules

Example (in your package.json)

"resolutions": {
  "terser": "3.14.1"
}

For npm try the suggestion by @odedi

[kurtinatlanta]

I added console logging locally and the _terser object is empty ({}) at the point where it's trying to do this:

  const {
    error,
    map,
    code,
    warnings
  } = _terser.default.minify({
    [file]: input
  }, terserOptions);

_terser.default is undefined and therefore it can't dereference _terser.default.minify.

I assume the terser folks must have changed something such that

var _terser = _interopRequireDefault(require("terser"));

no longer gets the right object.

[Xanngo]

I changed _terser.default.minify to _terser.minify and it works

[hutzleo]

https://github.com/rogeriochaves/npm-force-resolutions
for npm