Minified ESM from dash.all.min.esm.js not importable

[dsilhavy]

Description

We are creating ESM bundles including a dash.all.debug.esm.js and dash.all.min.esm.js. When testing the bundles and trying to import the dependencies the dash.all.debug.esm.js was working fine while dash.all.min.esm.js is not working. It looks like the modules are not correctly exported in dash.all.min.esm.js.

[dsilhavy]

Feedback by @littlespex on Slack:

I can see why its not working. Look at the last line of the minified file:

[5:03](https://dashif.slack.com/archives/D07KV3PUR6X/p1725548599604459)
p=dashjs,h=(r=r.default).false,y=r.false,b=r.false,v=r.false,E=r.false,_=r.false,T=r.default,A=r.false;export{h as Constants,y as Debug,b as MediaPlayer,v as MediaPlayerFactory,E as MetricsReporting,_ as Protection,T as default,A as supportsMediaSource};

All of the .false variables are undefined. I tried many different Webpack settings and so far nothing fixes it.

[littlespex]

It looks like the .false naming is intentional and a feature of webpack's optimization step. Setting optimization.usedExports to false seems to fix the issue.