wp-embed.min.js contains extra code

[szepe.viktor]

a.removeAttribute("security"),d.parentNode.replaceChild(a,d)}else;}

"else" is not in wp-embed.js!

Could it be an Uglify2JS issue?
​https://github.com/aaronjorbin/develop.wordpress/blob/master/Gruntfile.js#L444-L456

[szepe.viktor]

Props markoheijnen

[dd32]

This isn't a regression in the uglify process in 4.7, although does seem like extra code at first glance.

The else; has been there since ​https://build.trac.wordpress.org/changeset/35672/trunk/wp-includes/js/wp-embed.min.js which seems to stem from the conditionals: false in r35708 which is required to avoid the && issue in #34698.

[swissspidy]

This should indeed be reported upstream as it's specific to the conditionals: false setting in UglifyJS2. I get the same errant else in their online demo. Perhaps there's even a valid reason for it that we just don't know about.

[szepe.viktor]

OK.

​https://github.com/mishoo/UglifyJS2/issues/1447

[swissspidy]

This has been fixed upstream in early 2017: ​https://github.com/mishoo/UglifyJS2/pull/1449