Unexpected token: keyword (const) by UglifyJs about react-aspect-ratio

[karolisgrinkevicius]

@roderickhsiao yeah, thanks for your quick response. I switched further to terser plugin and now have everything working nicely. 👍

[roderickhsiao]

Thanks for reaching out

Several issues I could see

1 UglifyJs won't work for es module, suggested to use terser, which is a fork of uglify-es (not maintained) - and break lots of React bundling, webpack already move away default minifier to terser instead.

1. you could try to alias react-aspect-ratio/es to react-aspect-ratio in webpack, which will load the cjs bundle instead of es bundle
2. You can also include this library in your webpack file so it can be transpile via babel alone with your application code before minify the code.

Hope it helps

[roderickhsiao]

Yes, there is a huge discussion in open source community as many people found issues on uglify and uglify-es (even babel-minifiy), and currently the safest way is just switch to terser