New dependency name: uglify-es => terser #1

[fabiosantoscode]

There has been development on a new fork of uglify-es, which is now called terser and has its own package!

"terser": "^3.7.3"

Please upgrade to our new version.

[Nantris]

Is there a plan to do this? I've not been able to build using the primary fork of uglifyjs-webpack-plugin for over 5 months now.

All issues I've commented on, I've heard nothing from any maintainers.

The version of uglify-es used in this plugin has been broken for many, many months.

[fabiosantoscode]

@slapbox we haven't ported any issues to the terser repository. Can you link to what issues affect you?

[Nantris]

Sorry, by "this plugin" I mean the uglifyjs-webpack-plugin

The issue I'm having is this one, sym.definition is not a function #228

I'm not able to recall the exact nature of the issue, but I know the only solution I've found is to overwrite node_modules\uglifyjs-webpack-plugin\node_modules\es-uglify that installs by default with uglify-es@3.3.4

It looks like the plugin uses this version by default again, but nonetheless, I need to follow the procedure outlined above. Not sure about the exact cause anymore. I have cleared my yarn cache, but the issue persists.

[fabiosantoscode]

That issue should be fixed in terser. It has been closed in February in uglify-es.

[Nantris]

Indeed it has. For a while uglifyjs-webpack-plugin was using problematic versions of uglify-es like 3.10.x if I recall. I'm unsure why this issue is persisting since they've since rolled back to 3.3.4.

[olsonpm]

I'm having various issues with uglify-es via this plugin and will try terser. I appreciate you raising this issue. However it seems a new plugin may be appropriate given the name change? i.e. terser-webpack-plugin heh.

[olsonpm]

fyi I got the initial uglify -> terser refactoring done on a fork I'm using for my personal project. It works on my project so far - I'll update it if I run into any issues.

[alexander-akait]

Plan:

1. Finish and merge https://github.com/webpack-contrib/uglifyjs-webpack-plugin/pull/304ю
2. Implement support custom minify function (add tests and documentation about how use plugin with uglify-js and uglify-es)
3. Bump minimum required nodejs version, update all deps, switch to terser by default and release 2 version.
4. Bump this in webpack.

Any help is welcome.