I'm trying to understand all the options on the build using gulp

Using gulp --demo1 will include normal and dark mode files, but the normal are not minified.

Using gulp --prod --demo1 we have an error (can you check that? - error below)

So, my questions are:

• how can I build the entire assets folder with minified (for production) AND non-minified files?

• whats is the version (which build parameters) used to generated the dist folder that comes with the source code download?

PluginError [SyntaxError]: Unterminated string constant
    at js_error (/home/varantes/workspace/personal/metronic/Metronic/html/tools/node_modules/terser/dist/bundle.min.js:550:11)
    at parse_error (/home/varantes/workspace/personal/metronic/Metronic/html/tools/node_modules/terser/dist/bundle.min.js:686:9)
    at /home/varantes/workspace/personal/metronic/Metronic/html/tools/node_modules/terser/dist/bundle.min.js:837:48
    at /home/varantes/workspace/personal/metronic/Metronic/html/tools/node_modules/terser/dist/bundle.min.js:1050:24
    at Object.next_token [as input] (/home/varantes/workspace/personal/metronic/Metronic/html/tools/node_modules/terser/dist/bundle.min.js:1085:40)
    at peek (/home/varantes/workspace/personal/metronic/Metronic/html/tools/node_modules/terser/dist/bundle.min.js:1254:56)
    at next (/home/varantes/workspace/personal/metronic/Metronic/html/tools/node_modules/terser/dist/bundle.min.js:1259:24)
    at maybe_assign (/home/varantes/workspace/personal/metronic/Metronic/html/tools/node_modules/terser/dist/bundle.min.js:3448:17)
    at expression (/home/varantes/workspace/personal/metronic/Metronic/html/tools/node_modules/terser/dist/bundle.min.js:3468:24)
    at params_or_seq_ (/home/varantes/workspace/personal/metronic/Metronic/html/tools/node_modules/terser/dist/bundle.min.js:2048:24) {
  filename: '0',
  line: 5,
  col: 6694,
  pos: 6824,
  __safety: undefined,
  _stack: undefined,
  plugin: 'terser',
  showProperties: true,
  showStack: false
}