code snippet for https://bytepursuits.com/nginx-enabling-brotli-compression-with-gzip-deflate-fallback

nginx-static-brotli.conf

# Static Brotli:
# Browser accepts brotli, and matching pre-compressed file exists => rewrite to .br file
# For each file format set the correct mime type (otherwise brotli mime type is returned) and prevent Nginx for recompressing the files
set $extension "";
if ($http_accept_encoding ~ br) {
    set $extension .br;
}

if (-f $request_filename$extension) {
    rewrite (.*) $1$extension break;
}
location ~ /*.html.br$ {
    gzip off;
    brotli off;
    #Clearing types
    types {}
    default_type text/html;
    add_header Content-Encoding br;
    add_header Vary "Accept-Encoding";
    expires max;
}
location ~ /*.css.br$ {
    gzip off;
    brotli off;
    #Clearing types
    types {}
    default_type text/css;
    add_header Content-Encoding br;
    add_header Vary "Accept-Encoding";
    expires max;
}
location ~ /*.js.br$ {
    gzip off;
    brotli off;
    #Clearing types
    types {}
    default_type application/javascript;
    add_header Content-Encoding br;
    add_header Vary "Accept-Encoding";
    expires max;
}
location ~ /*.svg.br$ {
    gzip off;
    brotli off;
    #Clearing types
    types {}
    default_type image/svg+xml;
    add_header Content-Encoding br;
    add_header Vary "Accept-Encoding";
    expires max;
}