javascript - Missing .map resource? -

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this question has answer here:

i've started having problem projects. when index page loads contains reference jquery source file, console logs error: get http://localhost:3000/js/lib/jquery-1.10.2.min.map 500 (internal server error).

this doesn't affect application @ all, it's annoying see whenever open console. know coming from?

edit: note i'm not explicitly referencing .map file, pointing <script src="js/lib/jquery-1.10.2.min.js"></script>

jquery started using source maps.

for example, let's @ minified jquery 2.0.3 file's first few lines.

/*! jquery v2.0.3 | (c) 2005, 2013 jquery foundation, inc. | jquery.org/license //@ sourcemappingurl=jquery.min.map */

excerpt introduction javascript source maps:

have ever found wishing keep client-side code readable , more importantly debuggable after you've combined , minified it, without impacting performance? can through magic of source maps.

basically it's way map combined/minified file unbuilt state. when build production, along minifying , combining javascript files, generate source map holds information original files. when query line , column number in generated javascript can lookup in source map returns original location. developer tools (currently webkit nightly builds, google chrome, or firefox 23+) can parse source map automatically , make appear though you're running unminified , uncombined files.

emphasis mine

it's incredibly useful, , download if user opens dev tools.

solution

remove source mapping line, or nothing. isn't problem.

side note: server should return 404, not 500. point security problem if happens in production.


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