amp-date-picker not properly minified due to copyright notice

[RonnieWinter]

What's the issue?

When we run lighthouse tests against our AMP pages amp-date-picker-0.1.js is being flagged as not being minified. I have checked https://cdn.ampproject.org/v0/amp-date-picker-0.1.js and it actually does look like it is minified except for the copyright notice which includes whitespace and new lines. I have checked the .js files for other components such as amp-list and amp-form and I see that they do not have a copyright notice and are therefore properly minified.

So would it be possible to remove/minify the copyright notice from the amp-date-picker-0.1.js file so that it can actually be considered as minified javascript?

[jpettitt]

The copyright notice is required by the license of the underlying code and cannot be removed. Other modules do not include third party code and so do not have the same requirement. This is a misdetection by lighthouse.

[patrickhulce]

For the record, this was indeed a bug with Lighthouse's JS parser, esprima. LH is 1000% onboard with keeping copyright notices in code :)