incompatible with uglifyjs

[evgenyfadeev]

Hello, I'm getting this when building the productio package

....... from UglifyJs
Unexpected token: punc (,) ....

Perhaps there is a way to add build configuration to the package to fix this?
I've gone around by copying the code in my utilities library.
Thanks!

[aceakash]

Don't know enough about Uglify, sorry. Does it support ES6? That might be the difference.
Try using the latest version 1.x of string-similarity which is ES5 to verify.

[evgenyfadeev]

uglify does not support es6, so I thought you might add a build config to transpile the code to es5...

[aceakash]

Fair enough @evgenyfadeev, I'm open to any PRs for build config.

[janriemer]

@aceakash @evgenyfadeev
Actually, terser supports minification of ES6. 👌
I've used it with rollup in scrolldir-observable.

[balazsorban44]

From terser

Why choose terser?
uglify-es is no longer maintained and uglify-js does not support ES6+.
terser is a fork of uglify-es that retains API and CLI compatibility with uglify-es and uglify-js@3.

[sitch]

bump

[ljmerza]

es6 has been out for almost 5 years. why go through the trouble of supporting uglify-js? don't enable outdated code.

[janriemer]

Isn't this PR adding support for ES6 with babel? Can it be merged?