[Failed to Minify]

Just noticed I was using an older version of Laravel Mix there, which used an older version of webpack. Updating Laravel Mix to the latest version seems to have solved the problem, so the error might lie with older versions of webpack?

[Failed to Minify]

I've added a minimal test repo at https://github.com/alexhillel/gsap-test-case -  running node 10.3.0 and npm 6.1.0 on my Mac:

 

npm install

 

npm run production 

 

results in:
 

 ERROR  Failed to compile with 1 errors                                                                                                     7:47:34 PM

 error

/scripts/main.js from UglifyJs
Name expected [./node_modules/gsap/TweenLite.js:1966,0][/scripts/main.js:2045,6]

           Asset    Size  Chunks                    Chunk Names
/scripts/main.js  382 kB       0  [emitted]  [big]  /scripts/main
npm ERR! code ELIFECYCLE
npm ERR! errno 2
npm ERR! gsap-test-case@ production: `NODE_ENV=production webpack --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js`
npm ERR! Exit status 2
npm ERR!
npm ERR! Failed at the gsap-test-case@ production script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/alexhillel/.npm/_logs/2018-05-30T18_47_34_790Z-debug.log

 

[Failed to Minify]

I'm seeing this too using Laravel Mix using GSAP 2.0.0, running node 10.3.0 and npm 6.1.0 - it's failing to minify using UglifyJS erroring at TweenLite.js:1966,0.