Why doesn't nginx recompress scripts like path.js?ver=4.3?

Question

Nginx

The NGINX config has:

gzip  on;
gzip_disable "MSIE [1-6]\.(?!.*SV1)";
gzip_min_length 1000;
gzip_comp_level 5;
gzip_static on;
gzip_proxied any;
gzip_types text/plain text/xml text/css application/x-javascript text/javascript ...

But in fact, some of the files remain uncompressed.

Answer 1

What is the size of non-compressible files?
gzip_min_length 1000;

Answer 2

And path.js?ver=4.3 what Content-Type does it return? If it is generated there by some script or something else, it may differ from those specified in gzip_types