Build assets using Gulp

[h-a-s-h]

What are the npm/node/etc versions needed to compile the assets?
Can you give some instructions / hints about the correct commands?

I've tried on Windows, on the latest 11.x branch:

> nvm install 8
> nvm use 8
Now using node v8.17.0 (64-bit)
> npm install
> npm run prod

And I got:

Using gulpfile D:\totem-11\gulpfile.js
Starting 'all'...
Starting 'webpack'...
{ Error
    at new JS_Parse_Error (eval at <anonymous> (D:\totem-11\node_modules\gulp-uglify\node_modules\uglify-js\tools\node.js:28:1), <anonymous>:1534:18)
    at js_error (eval at <anonymous> (D:\totem-11\node_modules\gulp-uglify\node_modules\uglify-js\tools\node.js:28:1), <anonymous>:1542:11)
    at croak (eval at <anonymous> (D:\totem-11\node_modules\gulp-uglify\node_modules\uglify-js\tools\node.js:28:1), <anonymous>:2089:9)
    at token_error (eval at <anonymous> (D:\totem-11\node_modules\gulp-uglify\node_modules\uglify-js\tools\node.js:28:1), <anonymous>:2097:9)
    at expect_token (eval at <anonymous> (D:\totem-11\node_modules\gulp-uglify\node_modules\uglify-js\tools\node.js:28:1), <anonymous>:2110:9)
    at expect (eval at <anonymous> (D:\totem-11\node_modules\gulp-uglify\node_modules\uglify-js\tools\node.js:28:1), <anonymous>:2113:36)
    at regular_for (eval at <anonymous> (D:\totem-11\node_modules\gulp-uglify\node_modules\uglify-js\tools\node.js:28:1), <anonymous>:2354:9)
    at for_ (eval at <anonymous> (D:\totem-11\node_modules\gulp-uglify\node_modules\uglify-js\tools\node.js:28:1), <anonymous>:2350:16)
    at eval (eval at <anonymous> (D:\totem-11\node_modules\gulp-uglify\node_modules\uglify-js\tools\node.js:28:1), <anonymous>:2229:24)
    at eval (eval at <anonymous> (D:\totem-11\node_modules\gulp-uglify\node_modules\uglify-js\tools\node.js:28:1), <anonymous>:2136:24)
  message: 'D:\\totem-11\\app.js: SyntaxError: Unexpected token name «i», expected punc «;»',
  fileName: 'D:\\totem-11\\app.js',
  lineNumber: 42986,
  stack: 'Error\n    at new JS_Parse_Error (eval at <anonymous> (D:\\totem-11\\node_modules\\gulp-uglify\\node_modules\\uglify-js\\tools\\node.js:28:1), <anonymous>:1534:18)\n    at js_error (eval at <anonymous> (D:\\totem-11\\node_modules\\gulp-uglify\\node_modules\\uglify-js\\tools\\node.js:28:1), <anonymous>:1542:11)\n    at croak (eval at <anonymous> (D:\\totem-11\\node_modules\\gulp-uglify\\node_modules\\uglify-js\\tools\\node.js:28:1), <anonymous>:2089:9)\n    at token_error (eval at <anonymous> (D:\\totem-11\\node_modules\\gulp-uglify\\node_modules\\uglify-js\\tools\\node.js:28:1), <anonymous>:2097:9)\n    at expect_token (eval at <anonymous> (D:\\totem-11\\node_modules\\gulp-uglify\\node_modules\\uglify-js\\tools\\node.js:28:1), <anonymous>:2110:9)\n    at expect (eval at <anonymous> (D:\\totem-11\\node_modules\\gulp-uglify\\node_modules\\uglify-js\\tools\\node.js:28:1), <anonymous>:2113:36)\n    at regular_for (eval at <anonymous> (D:\\totem-11\\node_modules\\gulp-uglify\\node_modules\\uglify-js\\tools\\node.js:28:1), <anonymous>:2354:9)\n    at for_ (eval at <anonymous> (D:\\totem-11\\node_modules\\gulp-uglify\\node_modules\\uglify-js\\tools\\node.js:28:1), <anonymous>:2350:16)\n    at eval (eval at <anonymous> (D:\\totem-11\\node_modules\\gulp-uglify\\node_modules\\uglify-js\\tools\\node.js:28:1), <anonymous>:2229:24)\n    at eval (eval at <anonymous> (D:\\totem-11\\node_modules\\gulp-uglify\\node_modules\\uglify-js\\tools\\node.js:28:1), <anonymous>:2136:24)',
  showStack: false,
  showProperties: true,
  plugin: 'gulp-uglify' }
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! @ prod: `gulp --production`
npm ERR! Exit status 1

I read somewhere that gulp 3.9.1 is only compatible with node 8, so I tried that first.
But also tried node 9 through 14, and I got various errors or the same.
Node above 14 gives a npm install error.

[qschmick]

This is a Laravel package that is installed via composer. What are you trying to accomplish here?

[h-a-s-h]

I want to make some frontend changes on my fork in the .vue files. It then needs to be compiled, and it seems via the Gulp toolkit.