upgrade npm packages to the latest one

.eslintrc.json

@@ -1,6 +1,6 @@
 {
   "extends": "google",
-  "parser": "babel-eslint",
+  "parser": "@babel/eslint-parser",
   "globals": {},
   "rules": {
     "strict": 0,

gulpfile.js

@@ -2,66 +2,74 @@
 
 const gulp = require('gulp');
 const del = require('del');
-const runSequence = require('run-sequence');
 const browserSync = require('browser-sync');
-const gulpLoadPlugins = require('gulp-load-plugins');
 const lazypipe = require('lazypipe');
+const eslint = require('gulp-eslint');
+const uglify = require('gulp-uglify');
+const rename = require('gulp-rename');
+const header = require('gulp-header');
+const babel = require('gulp-babel');
 
-const $ = gulpLoadPlugins();
-const reload = browserSync.reload;
 const pkg = require('./package.json');
-const today = $.util.date('dd-mm-yyyy HH:MM');
 
-const browserSyncConfigs = {
-  notify: false,
-  // Disable open automatically when Browsersync starts.
-  open: false,
-  server: ['./'],
-  port: 3000
-};
+const [todayDateISO, todayTimeISO] = new Date().toISOString().split('T');
+const [todayYear, todayMonth, todayDay] = todayDateISO.split('-');
+const [todayHour, todayMinute] = todayTimeISO.split(':');
+const today = `${todayDay}-${todayMonth}-${todayYear} ${todayHour}:${todayMinute}`;
 
 const banner = [
   '/*!',
   ' * MoveTo - ' + pkg.description,
   ' * Version ' + pkg.version + ' (' + today + ')',
   ' * Licensed under ' + pkg.license,
-  ' * Copyright ' + $.util.date('yyyy') + ' ' + pkg.author,
+  ' * Copyright ' + todayYear + ' ' + pkg.author,
   ' */\n\n'
 ].join('\n');
 
-
-gulp.task('scripts:lint', (cb) => {
+function jsLint() {
   return gulp.src('src/**/*.js')
-    .pipe($.eslint())
-    .pipe($.eslint.format())
-    .pipe(browserSync.active ? $.util.noop() : $.eslint.failOnError());
-});
+    .pipe(eslint())
+    .pipe(eslint.format())
+    .pipe(browserSync.active ? () => undefined : eslint.failOnError());
+}
 
-gulp.task('scripts', ['scripts:lint'], () => {
+function jsMain(cb) {
   const scriptsMinChannel = lazypipe()
-    .pipe($.uglify)
-    .pipe($.rename, {suffix: '.min'})
-    .pipe($.header, banner)
+    .pipe(uglify)
+    .pipe(rename, {suffix: '.min'})
+    .pipe(header, banner)
     .pipe(gulp.dest, 'dist/');
 
   return gulp.src('src/**/*.js')
-    .pipe($.babel({presets: ['@babel/preset-env']}))
-    .pipe($.header(banner))
+    .pipe(babel({ presets: ['@babel/preset-env'] }))
+    .pipe(header(banner))
     .pipe(gulp.dest('dist'))
-    .pipe(scriptsMinChannel());
-});
+    .pipe(scriptsMinChannel())
+    .on('end', cb);
+}
+
+function reload(cb) {
+  browserSync.reload();
+  cb();
+}
+
+function serve() {
+  browserSync.init({
+    ghostMode: false,
+    notify: false,
+    server: ['./'],
+    port: 3000
+  });
+
+  gulp.watch('src/**/*.js', gulp.series('scripts', reload));
+}
+
+gulp.task('scripts:lint', jsLint);
+gulp.task('scripts:main', jsMain);
+gulp.task('scripts', gulp.series('scripts:lint', 'scripts:main'));
 
-gulp.task('clean:dist', () => del(['dist/*'], {dot: true}));
+gulp.task('clean:dist', () => del(['dist/*'], { dot: true }));
 
-gulp.task('build', (cb) =>
-  runSequence(
-    ['clean:dist'],
-    ['scripts'],
-    cb
-  )
-);
+gulp.task('build', gulp.series('clean:dist', 'scripts'));
 
-gulp.task('serve', () => {
-  browserSync(browserSyncConfigs);
-  gulp.watch(['src/**/*.js'], ['scripts', reload]);
-});
+gulp.task('serve', serve);

package.json

@@ -34,25 +34,26 @@
     "node": ">=8.9.4"
   },
   "devDependencies": {
-    "@babel/core": "^7.5.5",
-    "@babel/preset-env": "^7.5.5",
-    "ava": "^2.2.0",
-    "babel-eslint": "^10.0.2",
-    "browser-sync": "^2.26.7",
-    "del": "^5.0.0",
-    "eslint": "^6.1.0",
-    "eslint-config-google": "^0.13.0",
-    "gulp": "^3.9.1",
+    "@ava/babel": "^1.0.1",
+    "@babel/core": "^7.14.3",
+    "@babel/eslint-parser": "^7.14.3",
+    "@babel/preset-env": "^7.14.2",
+    "ava": "^3.15.0",
+    "browser-sync": "^2.26.14",
+    "del": "^6.0.0",
+    "eslint": "^7.26.0",
+    "eslint-config-google": "^0.14.0",
+    "gulp": "^4.0.2",
     "gulp-babel": "^8.0.0",
     "gulp-eslint": "^6.0.0",
     "gulp-header": "^2.0.9",
-    "gulp-load-plugins": "^2.0.0",
-    "gulp-rename": "^1.4.0",
+    "gulp-rename": "^2.0.0",
     "gulp-uglify": "^3.0.1",
-    "gulp-util": "^3.0.8",
-    "jsdom": "15.1.1",
+    "jsdom": "16.5.3",
     "jsdom-global": "3.0.2",
-    "lazypipe": "^1.0.1",
-    "run-sequence": "^2.2.1"
-  }
+    "lazypipe": "^1.0.1"
+  },
+  "ava": {
+		"babel": true
+	}
 }

src/moveTo.js

@@ -91,9 +91,8 @@ const MoveTo = (() => {
 
     const href = dom.getAttribute('href') || dom.getAttribute('data-target');
     // The element to be scrolled
-    const target = (href && href !== '#')
-      ? document.getElementById(href.substring(1))
-      : document.body;
+    const target =
+      (href && href !== '#') ? document.getElementById(href.substring(1)) : document.body;
     const options = mergeObject(this.options, _getOptionsFromTriggerDom(dom, this.options));
 
     if (typeof callback === 'function') {