gulpfile.js

var gulp = require("gulp");
var rename = require("gulp-rename");
var uglify = require("gulp-uglifyes");
var plumber = require("gulp-plumber");
var plumberNotifier = require("gulp-plumber-notifier");
var sourcemaps = require("gulp-sourcemaps");
var runSequence = require("run-sequence").use(gulp);

gulp.task("compressapp", function () {
  return gulp
    .src(["src/mwapp.js"])
    .pipe(plumberNotifier())
    .pipe(
      uglify({
        mangle: true,
        ecma: 6,
        toplevel: true,
      })
    )
    .pipe(sourcemaps.write("."))
    .pipe(gulp.dest("src"));
});

gulp.task("compressendscreen", function () {
  return gulp
    .src(["src/endscreen.js"])
    .pipe(plumberNotifier())
    .pipe(
      uglify({
        mangle: true,
        ecma: 6,
        toplevel: true,
      })
    )
    .pipe(sourcemaps.write("."))
    .pipe(gulp.dest("src"));
});

gulp.task("compresssplashscreen", function () {
  return gulp
    .src(["src/splashscreen.js"])
    .pipe(plumberNotifier())
    .pipe(
      uglify({
        mangle: true,
        ecma: 6,
        toplevel: true,
      })
    )
    .pipe(sourcemaps.write("."))
    .pipe(gulp.dest("src"));
});

gulp.task("compressdebuggingscreen", function () {
  return gulp
    .src(["src/debuggingscreen.js"])
    .pipe(plumberNotifier())
    .pipe(
      uglify({
        mangle: true,
        ecma: 6,
        toplevel: true,
      })
    )
    .pipe(sourcemaps.write("."))
    .pipe(gulp.dest("src"));
});