Nginx Redirect js.map , css.map

Question

I am receiving multiple 404 errors for .map files which do not exist in my server logs. e.g.

/wp-includes/js/tinymce/skins/lightgray/skin.min.css.map
/wp-content/plugins/cornerstone/assets/dist/js/site/cs-head.js.map
/wp-content/plugins/cornerstone/assets/dist/js/site/cs-body.js.map

How could I set up a redirect on Nginx so that files ending .map are redirected to a blank file called 404.map

In Apache this can be achieved as follows:

RewriteEngine On
Options +FollowSymlinks

    # Prevent 404 Not Found for javascript/css source maps
    RewriteCond %{REQUEST_URI}  (\.map)$
    RewriteRule (.*)  404.map [QSA]

Richard Smith · Accepted Answer · 2018-11-03 12:00:20Z

3

Use an error_page directive. Assuming that 404.map is placed in the document root, use:

location ~ \.map$ {
    error_page 404 /404.map;
}

If you want the 404.map file to be returned with a 200 status response, use:

location ~ \.map$ {
    error_page 404 =200 /404.map;
}

See this document for details.

In retrospect, error_page is probably not the answer you are looking for. To test for the existence of a file and return another file if it does not exist, use try_files. For example:

location ~ \.map$ {
    try_files $uri /404.map;
}

An advantage of using try_files is that the [error]...open()... messages will be suppressed. See this document for details.

edited Nov 3, 2018 at 12:00

answered Nov 2, 2018 at 10:38

Richard Smith

50.3k7 gold badges97 silver badges96 bronze badges

Sign up to request clarification or add additional context in comments.

6 Comments

JoaMika Over a year ago

ok but will this 404 redirect, all .map files or just the ones which are missing ?

Richard Smith Over a year ago

Only those that do not exist. If you want all .map files to respond with a 404, add return 404;

JoaMika Over a year ago

no I just want the ones missing .. thanks so much. My wordpress site is at var/www/html so I assume I must place 404.map in the html folder

JoaMika Over a year ago

I am still receiving errors: 2018/11/03 11:03:15 [error] 28190#28190: *26451 open() "/var/www/html/wp-content/themes/x/framework/dist/js/site/x.js.map" failed (2: No such file or directory), client: 34xxx.58, server: , request: "GET /wp-content/themes/x/framework/dist/js/site/x.js.map HTTP/1.1", host: "domain.com"

JoaMika Over a year ago

perhaps this is an issue with wordpress that interferes with nginx before your location code runs?

|

Collectives™ on Stack Overflow

Nginx Redirect js.map , css.map

1 Answer 1

6 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

6 Comments

Your Answer

Sign up or log in

Post as a guest

Related