system.js 编译好之后 为什么浏览器Sources里 能看到我的源文件？

这是我的请求加载的所有js

这是Sources里 能看到的文件

这是nginx配置

server {
    listen          3000;
    server_name     localhost;
    charset         utf-8;
    root            /root/www/jspm-angular-material;

    location / {
        root        /root/www/jspm-angular-material/public;
        index       index.html;
    }
    location ~ ^/(public)/ {
        root        /root/www/jspm-angular-material;
    }
    location ~ ^/(jspm_packages)/ {
        root        /root/www/jspm-angular-material;
    }
    location /config.js {
        root        /root/www/jspm-angular-material;
    }
    location /build.js {
        root        /root/www/jspm-angular-material;
    }
    location ~ /source {
        deny all;
    }
}

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关键字：sourcemap，搜之即可。