Update to Gulp4

[rejas]

Hi, I saw an old PR (thx to @erulabs for that) that didnt got updated to the final gulp4 release. Took some inspiration from it and cleaned up the code a little. Comments welcome @JacksonGariety

[xtforgame]

Well done @rejas

I just doing the same thing and the different part is that I put the cb function in the start event, like this way:

var called = false;

gulp.task('test', gulp.series('lint', function gulp_nodemon (cb) {
  stream
    .on('start', function () {
      if (!called) {
        called = true;
        cb(); <===
      }
    })

But I think it makes no significant difference to most cases :)

[rifler]

waiting for this...

[rejas]

Hi @JacksonGariety since there is no activity from you, do you plan on maintaining this repo or can we somehow help you?

[erulabs]

PR looks good to me! Also would be willing to help maintain the repo if some help is needed

[rejas]

Closing this since #151 got merged