[wp-trac] [WordPress Trac] #44560: Console warning because `build/.../underscore.min.js` references `sourceMapURL` that doesn't exist

[WordPress Trac]

#44560: Console warning because `build/.../underscore.min.js` references
`sourceMapURL` that doesn't exist
--------------------------------------+------------------------------
 Reporter:  iandunn                   |       Owner:  (none)
     Type:  defect (bug)              |      Status:  new
 Priority:  low                       |   Milestone:  Awaiting Review
Component:  Build/Test Tools          |     Version:  trunk
 Severity:  minor                     |  Resolution:
 Keywords:  good-first-bug has-patch  |     Focuses:  javascript
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Changes (by laghee):

 * keywords:  needs-patch good-first-bug => good-first-bug has-patch


Comment:

 I was able to reproduce the console warning, and I'm attaching a patch
 that should fix this.

 By adding both `underscore-min.map` and `underscore.js` to the section of
 the Gruntfile that copies over npm-package files. Adding only the map file
 didn't eliminate the error (because the map lists `underscore.js` with the
 `"sources"` key.

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Ticket URL: <https://core.trac.wordpress.org/ticket/44560#comment:3>
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