Update build dependencies

.eslintrc.js

@@ -3,17 +3,5 @@ module.exports = {
     browser: true,
     es6: true,
   },
-  extends: [
-    'airbnb-base',
-  ],
-  globals: {
-    Atomics: 'readonly',
-    SharedArrayBuffer: 'readonly',
-  },
-  parserOptions: {
-    ecmaVersion: 2018,
-  },
-  rules: {
-    "linebreak-style": "off"
-  },
+  parser: "@babel/eslint-parser",
 };

babel.config.json

@@ -0,0 +1,13 @@
+{
+    "presets": [
+      [
+        "@babel/env",
+        {
+          "targets": {
+            "node": "20"
+          }
+        }
+      ]
+    ]
+  }
+

gulpfile.js

@@ -4,11 +4,10 @@ const {
 
 const uglify = require('gulp-uglify-es').default;
 const browserSync = require('browser-sync').create();
-const del = require('del');
 const concat = require('gulp-concat');
 const sourcemaps = require('gulp-sourcemaps');
 const noop = require('gulp-noop');
-const sass = require('gulp-sass');
+const sass = require('gulp-sass')(require('sass'));
 const jsdoc = require('gulp-jsdoc3');
 const eslint = require('gulp-eslint');
 const sassLint = require('gulp-sass-lint');
@@ -96,7 +95,10 @@ function serve(done) {
   done();
 }
 
-const clean = () => del(['dist']);
+const clean = async () => {
+  const { deleteAsync } = await import('del');
+  return deleteAsync(['dist']);
+};
 
 const dowatch = () => watch(['lib', 'src', 'static'], series(dev /* , reload */));