gulpfile.js

var gulp = require('gulp'),
    gp_concat = require('gulp-concat'),
    gp_rename = require('gulp-rename'),
    gp_uglify = require('gulp-uglify'),
    watch = require('gulp-watch');

var deploy = require('gulp-gh-pages');

var destination_path = 'dist/',
    js_path = 'js/*.min.js';

gulp.task('concat', function(){
    return gulp.src(js_path)
            .pipe(gp_concat('app.js'))
            .pipe(gulp.dest(destination_path))

});

gulp.task('minify',function(){
    return gulp.src('js/scripts.js')
            .pipe(gp_rename('scripts.min.js'))
            .pipe(gp_uglify())
            .pipe(gulp.dest('js/'));
});

gulp.task('watch', function() {
    gulp.watch(js_path, gulp.series('default'));
});

//gulp.task('default',gulp.parallel(['concat','minify']));
gulp.task('default',gulp.parallel(['concat','minify','watch']));

/**
 * Push build to gh-pages
 */
gulp.task('deploy', function () {
  return gulp.src("./dist/**/*")
    .pipe(deploy({remoteUrl: 'https://github.com/arthurnovello/site-fablab-maua',
      branch: 'master'}));
});